dateparser – python parser for human readable dates

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dateparser provides modules to easily parse localized dates in almost any string formats commonly found on web pages.

Documentation

This documentation is built automatically and can be found on Read the Docs.

Introduction to dateparser

Features

  • Generic parsing of dates in over 200 language locales plus numerous formats in a language agnostic fashion.
  • Generic parsing of relative dates like: '1 min ago', '2 weeks ago', '3 months, 1 week and 1 day ago', 'in 2 days', 'tomorrow'.
  • Generic parsing of dates with time zones abbreviations or UTC offsets like: 'August 14, 2015 EST', 'July 4, 2013 PST', '21 July 2013 10:15 pm +0500'.
  • Date lookup in longer texts.
  • Support for non-Gregorian calendar systems. See Supported Calendars.
  • Extensive test coverage.

Basic Usage

The most straightforward way is to use the dateparser.parse function, that wraps around most of the functionality in the module.

dateparser.parse(date_string, date_formats=None, languages=None, locales=None, region=None, settings=None, detect_languages_function=None)[source]

Parse date and time from given date string.

Parameters:
  • date_string (str) – A string representing date and/or time in a recognizably valid format.
  • date_formats (list) – A list of format strings using directives as given here. The parser applies formats one by one, taking into account the detected languages/locales.
  • languages (list) – A list of language codes, e.g. [‘en’, ‘es’, ‘zh-Hant’]. If locales are not given, languages and region are used to construct locales for translation.
  • locales (list) – A list of locale codes, e.g. [‘fr-PF’, ‘qu-EC’, ‘af-NA’]. The parser uses only these locales to translate date string.
  • region (str) – A region code, e.g. ‘IN’, ‘001’, ‘NE’. If locales are not given, languages and region are used to construct locales for translation.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
  • detect_languages_function (function) – A function for language detection that takes as input a string (the date_string) and a confidence_threshold, and returns a list of detected language codes. Note: this function is only used if languages and locales are not provided.
Returns:

Returns datetime representing parsed date if successful, else returns None
Return type:

datetime.
Raises:

ValueError: Unknown Language, TypeError: Languages argument must be a list, SettingValidationError: A provided setting is not valid.

Relative Dates

>>> parse('1 hour ago')
datetime.datetime(2015, 5, 31, 23, 0)
>>> parse('Il ya 2 heures')  # French (2 hours ago)
datetime.datetime(2015, 5, 31, 22, 0)
>>> parse('1 anno 2 mesi')  # Italian (1 year 2 months)
datetime.datetime(2014, 4, 1, 0, 0)
>>> parse('yaklaşık 23 saat önce')  # Turkish (23 hours ago)
datetime.datetime(2015, 5, 31, 1, 0)
>>> parse('Hace una semana')  # Spanish (a week ago)
datetime.datetime(2015, 5, 25, 0, 0)
>>> parse('2小时前')  # Chinese (2 hours ago)
datetime.datetime(2015, 5, 31, 22, 0)

Note

Testing above code might return different values for you depending on your environment’s current date and time.

Note

For Finnish language, please specify settings={'SKIP_TOKENS': []} to correctly parse relative dates.

OOTB Language Based Date Order Preference

>>> # parsing ambiguous date
>>> parse('02-03-2016')  # assumes english language, uses MDY date order
datetime.datetime(2016, 2, 3, 0, 0)
>>> parse('le 02-03-2016')  # detects french, uses DMY date order
datetime.datetime(2016, 3, 2, 0, 0)

Note

Ordering is not locale based, that’s why do not expect DMY order for UK/Australia English. You can specify date order in that case as follows using Settings:

>>> parse('18-12-15 06:00', settings={'DATE_ORDER': 'DMY'})
datetime.datetime(2015, 12, 18, 6, 0)

For more on date order, please look at Settings.

Timezone and UTC Offset

By default, dateparser returns tzaware datetime if timezone is present in date string. Otherwise, it returns a naive datetime object.

>>> parse('January 12, 2012 10:00 PM EST')
datetime.datetime(2012, 1, 12, 22, 0, tzinfo=<StaticTzInfo 'EST'>)

>>> parse('January 12, 2012 10:00 PM -0500')
datetime.datetime(2012, 1, 12, 22, 0, tzinfo=<StaticTzInfo 'UTC\-05:00'>)

>>> parse('2 hours ago EST')
datetime.datetime(2017, 3, 10, 15, 55, 39, 579667, tzinfo=<StaticTzInfo 'EST'>)

>>> parse('2 hours ago -0500')
datetime.datetime(2017, 3, 10, 15, 59, 30, 193431, tzinfo=<StaticTzInfo 'UTC\-05:00'>)

If date has no timezone name/abbreviation or offset, you can specify it using TIMEZONE setting.

>>> parse('January 12, 2012 10:00 PM', settings={'TIMEZONE': 'US/Eastern'})
datetime.datetime(2012, 1, 12, 22, 0)

>>> parse('January 12, 2012 10:00 PM', settings={'TIMEZONE': '+0500'})
datetime.datetime(2012, 1, 12, 22, 0)

TIMEZONE option may not be useful alone as it only attaches given timezone to resultant datetime object. But can be useful in cases where you want conversions from and to different timezones or when simply want a tzaware date with given timezone info attached.

>>> parse('January 12, 2012 10:00 PM', settings={'TIMEZONE': 'US/Eastern', 'RETURN_AS_TIMEZONE_AWARE': True})
datetime.datetime(2012, 1, 12, 22, 0, tzinfo=<DstTzInfo 'US/Eastern' EST-1 day, 19:00:00 STD>)

>>> parse('10:00 am', settings={'TIMEZONE': 'EST', 'TO_TIMEZONE': 'EDT'})
datetime.datetime(2016, 9, 25, 11, 0)

Some more use cases for conversion of timezones.

>>> parse('10:00 am EST', settings={'TO_TIMEZONE': 'EDT'})  # date string has timezone info
datetime.datetime(2017, 3, 12, 11, 0, tzinfo=<StaticTzInfo 'EDT'>)

>>> parse('now EST', settings={'TO_TIMEZONE': 'UTC'})  # relative dates
datetime.datetime(2017, 3, 10, 23, 24, 47, 371823, tzinfo=<StaticTzInfo 'UTC'>)

In case, no timezone is present in date string or defined in Settings. You can still return tzaware datetime. It is especially useful in case of relative dates when uncertain what timezone is relative base.

>>> parse('2 minutes ago', settings={'RETURN_AS_TIMEZONE_AWARE': True})
datetime.datetime(2017, 3, 11, 4, 25, 24, 152670, tzinfo=<DstTzInfo 'Asia/Karachi' PKT+5:00:00 STD>)

In case, you want to compute relative dates in UTC instead of default system’s local timezone, you can use TIMEZONE setting.

>>> parse('4 minutes ago', settings={'TIMEZONE': 'UTC'})
datetime.datetime(2017, 3, 10, 23, 27, 59, 647248, tzinfo=<StaticTzInfo 'UTC'>)

Note

In case, when timezone is present both in string and also specified using Settings, string is parsed into tzaware representation and then converted to timezone specified in Settings.

>>> parse('10:40 pm PKT', settings={'TIMEZONE': 'UTC'})
datetime.datetime(2017, 3, 12, 17, 40, tzinfo=<StaticTzInfo 'UTC'>)

>>> parse('20 mins ago EST', settings={'TIMEZONE': 'UTC'})
datetime.datetime(2017, 3, 12, 21, 16, 0, 885091, tzinfo=<StaticTzInfo 'UTC'>)

For more on timezones, please look at Settings.

Incomplete Dates

>>> from dateparser import parse
>>> parse('December 2015')  # default behavior
datetime.datetime(2015, 12, 16, 0, 0)
>>> parse('December 2015', settings={'PREFER_DAY_OF_MONTH': 'last'})
datetime.datetime(2015, 12, 31, 0, 0)
>>> parse('December 2015', settings={'PREFER_DAY_OF_MONTH': 'first'})
datetime.datetime(2015, 12, 1, 0, 0)

>>> parse('March')
datetime.datetime(2015, 3, 16, 0, 0)
>>> parse('March', settings={'PREFER_DATES_FROM': 'future'})
datetime.datetime(2016, 3, 16, 0, 0)
>>> # parsing with preference set for 'past'
>>> parse('August', settings={'PREFER_DATES_FROM': 'past'})
datetime.datetime(2015, 8, 15, 0, 0)

You can also ignore parsing incomplete dates altogether by setting STRICT_PARSING flag as follows:

>>> parse('December 2015', settings={'STRICT_PARSING': True})
None

For more on handling incomplete dates, please look at Settings.

Search for Dates in Longer Chunks of Text

Warning

Support for searching dates is really limited and needs a lot of improvement, we look forward to community’s contribution to get better on that part. See “Contributing”.

You can extract dates from longer strings of text. They are returned as list of tuples with text chunk containing the date and parsed datetime object.

dateparser.search.search_dates(text, languages=None, settings=None, add_detected_language=False, detect_languages_function=None)[source]

Find all substrings of the given string which represent date and/or time and parse them.

Parameters:
  • text (str) – A string in a natural language which may contain date and/or time expressions.
  • languages (list) – A list of two letters language codes.e.g. [‘en’, ‘es’]. If languages are given, it will not attempt to detect the language.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
  • add_detected_language (bool) – Indicates if we want the detected language returned in the tuple.
  • detect_languages_function (function) – A function for language detection that takes as input a text and a confidence_threshold, and returns a list of detected language codes. Note: detect_languages_function is only uses if languages are not provided.
Returns:

Returns list of tuples containing: substrings representing date and/or time, corresponding datetime.datetime object and detected language if add_detected_language is True. Returns None if no dates that can be parsed are found.
Return type:

list
Raises:

ValueError - Unknown Language

 
>>> from dateparser.search import search_dates
>>> search_dates('The first artificial Earth satellite was launched on 4 October 1957.')
[('on 4 October 1957', datetime.datetime(1957, 10, 4, 0, 0))]

>>> search_dates('The first artificial Earth satellite was launched on 4 October 1957.',
>>>              add_detected_language=True)
[('on 4 October 1957', datetime.datetime(1957, 10, 4, 0, 0), 'en')]

>>> search_dates("The client arrived to the office for the first time in March 3rd, 2004 "
>>>              "and got serviced, after a couple of months, on May 6th 2004, the customer "
>>>              "returned indicating a defect on the part")
[('in March 3rd, 2004 and', datetime.datetime(2004, 3, 3, 0, 0)),
 ('on May 6th 2004', datetime.datetime(2004, 5, 6, 0, 0))]

Advanced Usage

If you need more control over what is being parser check the Settings section as well as the Using DateDataParser section.

Dependencies

dateparser relies on following libraries in some ways:

  • dateutil’s module relativedelta for its freshness parser.
  • convertdate to convert Jalali dates to Gregorian.
  • hijri-converter to convert Hijri dates to Gregorian.
  • tzlocal to reliably get local timezone.
  • ruamel.yaml (optional) for operations on language files.

Supported languages and locales

You can check the supported locales by visiting the “Supported languages and locales” section.

Supported Calendars

Apart from the Georgian calendar, dateparser supports the Persian Jalali calendar and the Hijri/Islami calendar

To be able to use them you need to install the calendar extra by typing:

pip install dateparser[calendars]

  • Example using the Persian Jalali calendar. For more information, refer to Persian Jalali Calendar.

    >>> from dateparser.calendars.jalali import JalaliCalendar
>>> JalaliCalendar('جمعه سی ام اسفند ۱۳۸۷').get_date()
DateData(date_obj=datetime.datetime(2009, 3, 20, 0, 0), period='day', locale=None)

  • Example using the Hijri/Islamic Calendar. For more information, refer to Hijri Calendar.

    >>> from dateparser.calendars.hijri import HijriCalendar
>>> HijriCalendar('17-01-1437 هـ 08:30 مساءً').get_date()
DateData(date_obj=datetime.datetime(2015, 10, 30, 20, 30), period='day', locale=None)

Note

HijriCalendar only works with Python ≥ 3.6.

Indices and tables

Contents:

Introduction to dateparser

Features

  • Generic parsing of dates in over 200 language locales plus numerous formats in a language agnostic fashion.
  • Generic parsing of relative dates like: '1 min ago', '2 weeks ago', '3 months, 1 week and 1 day ago', 'in 2 days', 'tomorrow'.
  • Generic parsing of dates with time zones abbreviations or UTC offsets like: 'August 14, 2015 EST', 'July 4, 2013 PST', '21 July 2013 10:15 pm +0500'.
  • Date lookup in longer texts.
  • Support for non-Gregorian calendar systems. See Supported Calendars.
  • Extensive test coverage.

Basic Usage

The most straightforward way is to use the dateparser.parse function, that wraps around most of the functionality in the module.

dateparser.parse(date_string, date_formats=None, languages=None, locales=None, region=None, settings=None, detect_languages_function=None)[source]

Parse date and time from given date string.

Parameters:
  • date_string (str) – A string representing date and/or time in a recognizably valid format.
  • date_formats (list) – A list of format strings using directives as given here. The parser applies formats one by one, taking into account the detected languages/locales.
  • languages (list) – A list of language codes, e.g. [‘en’, ‘es’, ‘zh-Hant’]. If locales are not given, languages and region are used to construct locales for translation.
  • locales (list) – A list of locale codes, e.g. [‘fr-PF’, ‘qu-EC’, ‘af-NA’]. The parser uses only these locales to translate date string.
  • region (str) – A region code, e.g. ‘IN’, ‘001’, ‘NE’. If locales are not given, languages and region are used to construct locales for translation.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
  • detect_languages_function (function) – A function for language detection that takes as input a string (the date_string) and a confidence_threshold, and returns a list of detected language codes. Note: this function is only used if languages and locales are not provided.
Returns:

Returns datetime representing parsed date if successful, else returns None
Return type:

datetime.
Raises:

ValueError: Unknown Language, TypeError: Languages argument must be a list, SettingValidationError: A provided setting is not valid.
Relative Dates
>>> parse('1 hour ago')
datetime.datetime(2015, 5, 31, 23, 0)
>>> parse('Il ya 2 heures')  # French (2 hours ago)
datetime.datetime(2015, 5, 31, 22, 0)
>>> parse('1 anno 2 mesi')  # Italian (1 year 2 months)
datetime.datetime(2014, 4, 1, 0, 0)
>>> parse('yaklaşık 23 saat önce')  # Turkish (23 hours ago)
datetime.datetime(2015, 5, 31, 1, 0)
>>> parse('Hace una semana')  # Spanish (a week ago)
datetime.datetime(2015, 5, 25, 0, 0)
>>> parse('2小时前')  # Chinese (2 hours ago)
datetime.datetime(2015, 5, 31, 22, 0)

Note

Testing above code might return different values for you depending on your environment’s current date and time.

Note

For Finnish language, please specify settings={'SKIP_TOKENS': []} to correctly parse relative dates.

OOTB Language Based Date Order Preference
>>> # parsing ambiguous date
>>> parse('02-03-2016')  # assumes english language, uses MDY date order
datetime.datetime(2016, 2, 3, 0, 0)
>>> parse('le 02-03-2016')  # detects french, uses DMY date order
datetime.datetime(2016, 3, 2, 0, 0)

Note

Ordering is not locale based, that’s why do not expect DMY order for UK/Australia English. You can specify date order in that case as follows using Settings:

>>> parse('18-12-15 06:00', settings={'DATE_ORDER': 'DMY'})
datetime.datetime(2015, 12, 18, 6, 0)

For more on date order, please look at Settings.

Timezone and UTC Offset

By default, dateparser returns tzaware datetime if timezone is present in date string. Otherwise, it returns a naive datetime object.

>>> parse('January 12, 2012 10:00 PM EST')
datetime.datetime(2012, 1, 12, 22, 0, tzinfo=<StaticTzInfo 'EST'>)

>>> parse('January 12, 2012 10:00 PM -0500')
datetime.datetime(2012, 1, 12, 22, 0, tzinfo=<StaticTzInfo 'UTC\-05:00'>)

>>> parse('2 hours ago EST')
datetime.datetime(2017, 3, 10, 15, 55, 39, 579667, tzinfo=<StaticTzInfo 'EST'>)

>>> parse('2 hours ago -0500')
datetime.datetime(2017, 3, 10, 15, 59, 30, 193431, tzinfo=<StaticTzInfo 'UTC\-05:00'>)

If date has no timezone name/abbreviation or offset, you can specify it using TIMEZONE setting.

>>> parse('January 12, 2012 10:00 PM', settings={'TIMEZONE': 'US/Eastern'})
datetime.datetime(2012, 1, 12, 22, 0)

>>> parse('January 12, 2012 10:00 PM', settings={'TIMEZONE': '+0500'})
datetime.datetime(2012, 1, 12, 22, 0)

TIMEZONE option may not be useful alone as it only attaches given timezone to resultant datetime object. But can be useful in cases where you want conversions from and to different timezones or when simply want a tzaware date with given timezone info attached.

>>> parse('January 12, 2012 10:00 PM', settings={'TIMEZONE': 'US/Eastern', 'RETURN_AS_TIMEZONE_AWARE': True})
datetime.datetime(2012, 1, 12, 22, 0, tzinfo=<DstTzInfo 'US/Eastern' EST-1 day, 19:00:00 STD>)

>>> parse('10:00 am', settings={'TIMEZONE': 'EST', 'TO_TIMEZONE': 'EDT'})
datetime.datetime(2016, 9, 25, 11, 0)

Some more use cases for conversion of timezones.

>>> parse('10:00 am EST', settings={'TO_TIMEZONE': 'EDT'})  # date string has timezone info
datetime.datetime(2017, 3, 12, 11, 0, tzinfo=<StaticTzInfo 'EDT'>)

>>> parse('now EST', settings={'TO_TIMEZONE': 'UTC'})  # relative dates
datetime.datetime(2017, 3, 10, 23, 24, 47, 371823, tzinfo=<StaticTzInfo 'UTC'>)

In case, no timezone is present in date string or defined in Settings. You can still return tzaware datetime. It is especially useful in case of relative dates when uncertain what timezone is relative base.

>>> parse('2 minutes ago', settings={'RETURN_AS_TIMEZONE_AWARE': True})
datetime.datetime(2017, 3, 11, 4, 25, 24, 152670, tzinfo=<DstTzInfo 'Asia/Karachi' PKT+5:00:00 STD>)

In case, you want to compute relative dates in UTC instead of default system’s local timezone, you can use TIMEZONE setting.

>>> parse('4 minutes ago', settings={'TIMEZONE': 'UTC'})
datetime.datetime(2017, 3, 10, 23, 27, 59, 647248, tzinfo=<StaticTzInfo 'UTC'>)

Note

In case, when timezone is present both in string and also specified using Settings, string is parsed into tzaware representation and then converted to timezone specified in Settings.

>>> parse('10:40 pm PKT', settings={'TIMEZONE': 'UTC'})
datetime.datetime(2017, 3, 12, 17, 40, tzinfo=<StaticTzInfo 'UTC'>)

>>> parse('20 mins ago EST', settings={'TIMEZONE': 'UTC'})
datetime.datetime(2017, 3, 12, 21, 16, 0, 885091, tzinfo=<StaticTzInfo 'UTC'>)

For more on timezones, please look at Settings.

Incomplete Dates
>>> from dateparser import parse
>>> parse('December 2015')  # default behavior
datetime.datetime(2015, 12, 16, 0, 0)
>>> parse('December 2015', settings={'PREFER_DAY_OF_MONTH': 'last'})
datetime.datetime(2015, 12, 31, 0, 0)
>>> parse('December 2015', settings={'PREFER_DAY_OF_MONTH': 'first'})
datetime.datetime(2015, 12, 1, 0, 0)

>>> parse('March')
datetime.datetime(2015, 3, 16, 0, 0)
>>> parse('March', settings={'PREFER_DATES_FROM': 'future'})
datetime.datetime(2016, 3, 16, 0, 0)
>>> # parsing with preference set for 'past'
>>> parse('August', settings={'PREFER_DATES_FROM': 'past'})
datetime.datetime(2015, 8, 15, 0, 0)

You can also ignore parsing incomplete dates altogether by setting STRICT_PARSING flag as follows:

>>> parse('December 2015', settings={'STRICT_PARSING': True})
None

For more on handling incomplete dates, please look at Settings.

Search for Dates in Longer Chunks of Text

Warning

Support for searching dates is really limited and needs a lot of improvement, we look forward to community’s contribution to get better on that part. See “Contributing”.

You can extract dates from longer strings of text. They are returned as list of tuples with text chunk containing the date and parsed datetime object.

dateparser.search.search_dates(text, languages=None, settings=None, add_detected_language=False, detect_languages_function=None)[source]

Find all substrings of the given string which represent date and/or time and parse them.

Parameters:
  • text (str) – A string in a natural language which may contain date and/or time expressions.
  • languages (list) – A list of two letters language codes.e.g. [‘en’, ‘es’]. If languages are given, it will not attempt to detect the language.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
  • add_detected_language (bool) – Indicates if we want the detected language returned in the tuple.
  • detect_languages_function (function) – A function for language detection that takes as input a text and a confidence_threshold, and returns a list of detected language codes. Note: detect_languages_function is only uses if languages are not provided.
Returns:

Returns list of tuples containing: substrings representing date and/or time, corresponding datetime.datetime object and detected language if add_detected_language is True. Returns None if no dates that can be parsed are found.
Return type:

list
Raises:

ValueError - Unknown Language

 
>>> from dateparser.search import search_dates
>>> search_dates('The first artificial Earth satellite was launched on 4 October 1957.')
[('on 4 October 1957', datetime.datetime(1957, 10, 4, 0, 0))]

>>> search_dates('The first artificial Earth satellite was launched on 4 October 1957.',
>>>              add_detected_language=True)
[('on 4 October 1957', datetime.datetime(1957, 10, 4, 0, 0), 'en')]

>>> search_dates("The client arrived to the office for the first time in March 3rd, 2004 "
>>>              "and got serviced, after a couple of months, on May 6th 2004, the customer "
>>>              "returned indicating a defect on the part")
[('in March 3rd, 2004 and', datetime.datetime(2004, 3, 3, 0, 0)),
 ('on May 6th 2004', datetime.datetime(2004, 5, 6, 0, 0))]

Advanced Usage

If you need more control over what is being parser check the Settings section as well as the Using DateDataParser section.

Dependencies

dateparser relies on following libraries in some ways:

  • dateutil’s module relativedelta for its freshness parser.
  • convertdate to convert Jalali dates to Gregorian.
  • hijri-converter to convert Hijri dates to Gregorian.
  • tzlocal to reliably get local timezone.
  • ruamel.yaml (optional) for operations on language files.

Supported languages and locales

You can check the supported locales by visiting the “Supported languages and locales” section.

Supported Calendars

Apart from the Georgian calendar, dateparser supports the Persian Jalali calendar and the Hijri/Islami calendar

To be able to use them you need to install the calendar extra by typing:

pip install dateparser[calendars]

  • Example using the Persian Jalali calendar. For more information, refer to Persian Jalali Calendar.

    >>> from dateparser.calendars.jalali import JalaliCalendar
>>> JalaliCalendar('جمعه سی ام اسفند ۱۳۸۷').get_date()
DateData(date_obj=datetime.datetime(2009, 3, 20, 0, 0), period='day', locale=None)

  • Example using the Hijri/Islamic Calendar. For more information, refer to Hijri Calendar.

    >>> from dateparser.calendars.hijri import HijriCalendar
>>> HijriCalendar('17-01-1437 هـ 08:30 مساءً').get_date()
DateData(date_obj=datetime.datetime(2015, 10, 30, 20, 30), period='day', locale=None)

Note

HijriCalendar only works with Python ≥ 3.6.

Installation

At the command line:

$ pip install dateparser

Or, if you don’t have pip installed:

$ easy_install dateparser

If you want to install from the latest sources, you can do:

$ git clone https://github.com/scrapinghub/dateparser.git
$ cd dateparser
$ python setup.py install

Using DateDataParser

dateparser.parse() uses a default parser which tries to detect language every time it is called and is not the most efficient way while parsing dates from the same source.

DateDataParser provides an alternate and efficient way to control language detection behavior.

The instance of DateDataParser caches the found languages and will prioritize them when trying to parse the next string.

dateparser.date.DateDataParser can also be initialized with known languages:

>>> ddp = DateDataParser(languages=['de', 'nl'])
>>> ddp.get_date_data('vr jan 24, 2014 12:49')
DateData(date_obj=datetime.datetime(2014, 1, 24, 12, 49), period='day', locale='nl')
>>> ddp.get_date_data('18.10.14 um 22:56 Uhr')
DateData(date_obj=datetime.datetime(2014, 10, 18, 22, 56), period='day', locale='de')
>>> ddp.get_date_data('11 July 2012')
DateData(date_obj=None, period='day', locale=None)

Settings

dateparser’s parsing behavior can be configured by supplying settings as a dictionary to settings argument in dateparser.parse() or DateDataParser constructor.

Note

From dateparser 1.0.0 when a setting with a wrong value is provided, a SettingValidationError is raised.

All supported settings with their usage examples are given below:

Date Order

DATE_ORDER: specifies the order in which date components year, month and day are expected while parsing ambiguous dates. It defaults to MDY which translates to month first, day second and year last order. Characters M, D or Y can be shuffled to meet required order. For example, DMY specifies day first, month second and year last order:

>>> parse('15-12-18 06:00')  # assumes default order: MDY
datetime.datetime(2018, 12, 15, 6, 0)  # since 15 is not a valid value for Month, it is swapped with Day's
>>> parse('15-12-18 06:00', settings={'DATE_ORDER': 'YMD'})
datetime.datetime(2015, 12, 18, 6, 0)

PREFER_LOCALE_DATE_ORDER: defaults to True. Most languages have a default DATE_ORDER specified for them. For example, for French it is DMY:

>>> # parsing ambiguous date
>>> parse('02-03-2016')  # assumes english language, uses MDY date order
datetime.datetime(2016, 2, 3, 0, 0)
>>> parse('le 02-03-2016')  # detects french, hence, uses DMY date order
datetime.datetime(2016, 3, 2, 0, 0)

Note

There’s no language level default DATE_ORDER associated with en language. That’s why it assumes MDY which is :obj:settings <dateparser.conf.settings> default. If the language has a default DATE_ORDER associated, supplying custom date order will not be applied unless we set PREFER_LOCALE_DATE_ORDER to False:

>>> parse('le 02-03-2016', settings={'DATE_ORDER': 'MDY'})
datetime.datetime(2016, 3, 2, 0, 0)  # MDY didn't apply

>>> parse('le 02-03-2016', settings={'DATE_ORDER': 'MDY', 'PREFER_LOCALE_DATE_ORDER': False})
datetime.datetime(2016, 2, 3, 0, 0)  # MDY worked!

Handling Incomplete Dates

PREFER_DAY_OF_MONTH: it comes handy when the date string is missing the day part. It defaults to current and can be first and last denoting first and last day of months respectively as values:

>>> from dateparser import parse
>>> parse('December 2015')  # default behavior
datetime.datetime(2015, 12, 16, 0, 0)
>>> parse('December 2015', settings={'PREFER_DAY_OF_MONTH': 'last'})
datetime.datetime(2015, 12, 31, 0, 0)
>>> parse('December 2015', settings={'PREFER_DAY_OF_MONTH': 'first'})
datetime.datetime(2015, 12, 1, 0, 0)

PREFER_DATES_FROM: defaults to current_period and can have past and future as values.

If date string is missing some part, this option ensures consistent results depending on the past or future preference, for example, assuming current date is June 16, 2015:

>>> from dateparser import parse
>>> parse('March')
datetime.datetime(2015, 3, 16, 0, 0)
>>> parse('March', settings={'PREFER_DATES_FROM': 'future'})
datetime.datetime(2016, 3, 16, 0, 0)
>>> # parsing with preference set for 'past'
>>> parse('August', settings={'PREFER_DATES_FROM': 'past'})
datetime.datetime(2015, 8, 15, 0, 0)

RELATIVE_BASE: allows setting the base datetime to use for interpreting partial or relative date strings. Defaults to the current date and time.

For example, assuming current date is June 16, 2015:

>>> from dateparser import parse
>>> parse('14:30')
datetime.datetime(2015, 6, 16, 14, 30)
>>> parse('14:30', settings={'RELATIVE_BASE': datetime.datetime(2020, 1, 1)})
datetime.datetime(2020, 1, 1, 14, 30)
>>> parse('tomorrow', settings={'RELATIVE_BASE': datetime.datetime(2020, 1, 1)})
datetime.datetime(2020, 1, 2, 0, 0)

STRICT_PARSING: defaults to False.

When set to True if missing any of day, month or year parts, it does not return any result altogether.:

>>> parse('March', settings={'STRICT_PARSING': True})
None

REQUIRE_PARTS: ensures results are dates that have all specified parts. It defaults to [] and can include day, month and/or year.

For example, assuming current date is June 16, 2019:

>>> parse('2012') # default behavior
datetime.datetime(2012, 6, 16, 0, 0)
>>> parse('2012', settings={'REQUIRE_PARTS': ['month']})
None
>>> parse('March 2012', settings={'REQUIRE_PARTS': ['day']})
None
>>> parse('March 12, 2012', settings={'REQUIRE_PARTS': ['day']})
datetime.datetime(2012, 3, 12, 0, 0)
>>> parse('March 12, 2012', settings={'REQUIRE_PARTS': ['day', 'month', 'year']})
datetime.datetime(2012, 3, 12, 0, 0)

Language Detection

SKIP_TOKENS: it is a list of tokens to discard while detecting language. Defaults to ['t'] which skips T in iso format datetime string .e.g. 2015-05-02T10:20:19+0000.:

>>> from dateparser.date import DateDataParser
>>> DateDataParser(settings={'SKIP_TOKENS': ['de']}).get_date_data(u'27 Haziran 1981 de')  # Turkish (at 27 June 1981)
DateData(date_obj=datetime.datetime(1981, 6, 27, 0, 0), period='day', locale='tr')

NORMALIZE: applies unicode normalization (removing accents, diacritics…) when parsing the words. Defaults to True.

>>> dateparser.parse('4 decembre 2015', settings={'NORMALIZE': False})
# It doesn't work as the expected input should be '4 décembre 2015'

>>> dateparser.parse('4 decembre 2015', settings={'NORMALIZE': True})
datetime.datetime(2015, 12, 4, 0, 0)

Default Languages

DEFAULT_LANGUAGES: It is a list of language codes in ISO 639 that will be used as default languages for parsing when language detection fails. eg. [“en”, “fr”]:

>>> from dateparser import parse
>>> parse('3 de marzo de 2020', settings={'DEFAULT_LANGUAGES': ["es"]})

Note

When using this setting, these languages will be tried after trying with the detected languages with no success. It is especially useful when using the ``detect_languages_function`.

Optional language detection

LANGUAGE_DETECTION_CONFIDENCE_THRESHOLD: defaults to 0.5. It is a float of minimum required confidence for the custom language detection:

>>> from dateparser import parse
>>> parse('3 de marzo de 2020', settings={'LANGUAGE_DETECTION_CONFIDENCE_THRESHOLD': 0.5}, detect_languages_function=detect_languages)

Other settings

RETURN_TIME_AS_PERIOD: returns time as period in date object, if time component is present in date string. Defaults to False.

>>> ddp = DateDataParser(settings={'RETURN_TIME_AS_PERIOD': True})
>>> ddp.get_date_data('vr jan 24, 2014 12:49')
DateData(date_obj=datetime.datetime(2014, 1, 24, 12, 49), period='time', locale='nl')

PARSERS: it is a list of names of parsers to try, allowing to customize which parsers are tried against the input date string, and in which order they are tried.

The following parsers exist:

  • 'timestamp': If the input string starts with 10 digits, optionally followed by additional digits or a period (.), those first 10 digits are interpreted as Unix time.
  • 'negative-timestamp': 'timestamp' for negative timestamps. For
example, parses -186454800000 as 1964-02-03T23:00:00.
  • 'relative-time': Parses dates and times expressed in relation to the current date and time (e.g. “1 day ago”, “in 2 weeks”).
  • 'custom-formats': Parses dates that match one of the date formats in the list of the date_formats parameter of dateparser.parse() or DateDataParser.get_date_data.
  • 'absolute-time': Parses dates and times expressed in absolute form (e.g. “May 4th”, “1991-05-17”). It takes into account settings such as DATE_ORDER or PREFER_LOCALE_DATE_ORDER.
  • 'no-spaces-time': Parses dates and times that consist in only digits or a combination of digits and non-digits where the first non-digit it’s a colon (e.g. “121994”, “11:052020”). It’s not included in the default parsers and it can produce false positives frequently.

dateparser.settings.default_parsers contains the default value of PARSERS (the list above, in that order) and can be used to write code that changes the parsers to try without skipping parsers that may be added to Dateparser in the future. For example, to ignore relative times:

>>> from dateparser_data.settings import default_parsers
>>> parsers = [parser for parser in default_parsers if parser != 'relative-time']
>>> parse('today', settings={'PARSERS': parsers})

Custom language detection

dateparser allows to customize the language detection behavior by using the detect_languages_function parameter. It currently supports two language detection libraries out of the box: fastText and langdetect, and allows you to implement your own custom language detection.

Warning

For short strings the language detection could fail, so it’s highly recommended to use detect_languages_function along with DEFAULT_LANGUAGES.

Built-in implementations

fastText

Language detection with fastText.

Import the fastText wrapper and pass it as detect_languages_function parameter. Example:

>>> from dateparser.custom_language_detection.fasttext import detect_languages
>>> dateparser.parse('12/12/12', detect_languages_function=detect_languages)

The fastText integration currently supports the large and the small models. Find more information about fasttext models. You can download your model of choice using dateparser-download.

Downloading small model:

>>> dateparser-download --fasttext small

Downloading large model:

>>> dateparser-download --fasttext large

Deleting all cached models:

>>> dateparser-download --clear_cache

Note

If no model has been downloaded, the fastText wrapper downloads and uses the small model by default.

langdetect

Language detection with langdetect.

Import the langdetect wrapper and pass it as detect_languages_function parameter. Example:

>>> from dateparser.custom_language_detection.langdetect import detect_languages
>>> dateparser.parse('12/12/12', detect_languages_function=detect_languages)

Note

From some tests we did, we recommend to use fastText for faster and more accurate results.

Custom implementation

dateparser allows the integration of any library to detect languages by wrapping that library in a function that accepts 2 parameters, text and confidence_threshold, and returns a list of the detected language codes in ISO 639 standards.

Wrapper for boilerplate for implementing custom language detections:

def detect_languages(text, confidence_threshold):
    """
    Takes 2 parameters, `text` and `confidence_threshold`, and returns
    a list of `languages codes`.

    * `text` is the input string whose language needs to be detected.

    * `confidence_threshold` is a number between 0 and 1 that indicates the
    minimum confidence required for language matches.

    For language detection libraries that, for each language, indicate how
    confident they are that the language matches the input text, you should
    filter out languages with a confidence lower than this value (adjusted,
    if needed, to the confidence range of the target library).

    This value comes from the dateparser setting
    `LANGUAGE_DETECTION_CONFIDENCE_THRESHOLD`.

    The result must be a list of languages codes (strings).
    """
    # here you can apply your own logic
    return language_codes

Supported languages and locales

Language Locales
af ‘af-NA’
agq  
ak  
am  
ar ‘ar-AE’, ‘ar-BH’, ‘ar-DJ’, ‘ar-DZ’, ‘ar-EG’, ‘ar-EH’, ‘ar-ER’, ‘ar-IL’, ‘ar-IQ’, ‘ar-JO’, ‘ar-KM’, ‘ar-KW’, ‘ar-LB’, ‘ar-LY’, ‘ar-MA’, ‘ar-MR’, ‘ar-OM’, ‘ar-PS’, ‘ar-QA’, ‘ar-SA’, ‘ar-SD’, ‘ar-SO’, ‘ar-SS’, ‘ar-SY’, ‘ar-TD’, ‘ar-TN’, ‘ar-YE’
as  
asa  
ast  
az  
az-Cyrl  
az-Latn  
bas  
be  
bem  
bez  
bg  
bm  
bn ‘bn-IN’
bo ‘bo-IN’
br  
brx  
bs  
bs-Cyrl  
bs-Latn  
ca ‘ca-AD’, ‘ca-FR’, ‘ca-IT’
ce  
cgg  
chr  
ckb ‘ckb-IR’
cs  
cy  
da ‘da-GL’
dav  
de ‘de-AT’, ‘de-BE’, ‘de-CH’, ‘de-IT’, ‘de-LI’, ‘de-LU’
dje  
dsb  
dua  
dyo  
dz  
ebu  
ee ‘ee-TG’
el ‘el-CY’
en ‘en-001’, ‘en-150’, ‘en-AG’, ‘en-AI’, ‘en-AS’, ‘en-AT’, ‘en-AU’, ‘en-BB’, ‘en-BE’, ‘en-BI’, ‘en-BM’, ‘en-BS’, ‘en-BW’, ‘en-BZ’, ‘en-CA’, ‘en-CC’, ‘en-CH’, ‘en-CK’, ‘en-CM’, ‘en-CX’, ‘en-CY’, ‘en-DE’, ‘en-DG’, ‘en-DK’, ‘en-DM’, ‘en-ER’, ‘en-FI’, ‘en-FJ’, ‘en-FK’, ‘en-FM’, ‘en-GB’, ‘en-GD’, ‘en-GG’, ‘en-GH’, ‘en-GI’, ‘en-GM’, ‘en-GU’, ‘en-GY’, ‘en-HK’, ‘en-IE’, ‘en-IL’, ‘en-IM’, ‘en-IN’, ‘en-IO’, ‘en-JE’, ‘en-JM’, ‘en-KE’, ‘en-KI’, ‘en-KN’, ‘en-KY’, ‘en-LC’, ‘en-LR’, ‘en-LS’, ‘en-MG’, ‘en-MH’, ‘en-MO’, ‘en-MP’, ‘en-MS’, ‘en-MT’, ‘en-MU’, ‘en-MW’, ‘en-MY’, ‘en-NA’, ‘en-NF’, ‘en-NG’, ‘en-NL’, ‘en-NR’, ‘en-NU’, ‘en-NZ’, ‘en-PG’, ‘en-PH’, ‘en-PK’, ‘en-PN’, ‘en-PR’, ‘en-PW’, ‘en-RW’, ‘en-SB’, ‘en-SC’, ‘en-SD’, ‘en-SE’, ‘en-SG’, ‘en-SH’, ‘en-SI’, ‘en-SL’, ‘en-SS’, ‘en-SX’, ‘en-SZ’, ‘en-TC’, ‘en-TK’, ‘en-TO’, ‘en-TT’, ‘en-TV’, ‘en-TZ’, ‘en-UG’, ‘en-UM’, ‘en-VC’, ‘en-VG’, ‘en-VI’, ‘en-VU’, ‘en-WS’, ‘en-ZA’, ‘en-ZM’, ‘en-ZW’
eo  
es ‘es-419’, ‘es-AR’, ‘es-BO’, ‘es-BR’, ‘es-BZ’, ‘es-CL’, ‘es-CO’, ‘es-CR’, ‘es-CU’, ‘es-DO’, ‘es-EA’, ‘es-EC’, ‘es-GQ’, ‘es-GT’, ‘es-HN’, ‘es-IC’, ‘es-MX’, ‘es-NI’, ‘es-PA’, ‘es-PE’, ‘es-PH’, ‘es-PR’, ‘es-PY’, ‘es-SV’, ‘es-US’, ‘es-UY’, ‘es-VE’
et  
eu  
ewo  
fa ‘fa-AF’
ff ‘ff-CM’, ‘ff-GN’, ‘ff-MR’
fi  
fil  
fo ‘fo-DK’
fr ‘fr-BE’, ‘fr-BF’, ‘fr-BI’, ‘fr-BJ’, ‘fr-BL’, ‘fr-CA’, ‘fr-CD’, ‘fr-CF’, ‘fr-CG’, ‘fr-CH’, ‘fr-CI’, ‘fr-CM’, ‘fr-DJ’, ‘fr-DZ’, ‘fr-GA’, ‘fr-GF’, ‘fr-GN’, ‘fr-GP’, ‘fr-GQ’, ‘fr-HT’, ‘fr-KM’, ‘fr-LU’, ‘fr-MA’, ‘fr-MC’, ‘fr-MF’, ‘fr-MG’, ‘fr-ML’, ‘fr-MQ’, ‘fr-MR’, ‘fr-MU’, ‘fr-NC’, ‘fr-NE’, ‘fr-PF’, ‘fr-PM’, ‘fr-RE’, ‘fr-RW’, ‘fr-SC’, ‘fr-SN’, ‘fr-SY’, ‘fr-TD’, ‘fr-TG’, ‘fr-TN’, ‘fr-VU’, ‘fr-WF’, ‘fr-YT’
fur  
fy  
ga  
gd  
gl  
gsw ‘gsw-FR’, ‘gsw-LI’
gu  
guz  
gv  
ha ‘ha-GH’, ‘ha-NE’
haw  
he  
hi  
hr ‘hr-BA’
hsb  
hu  
hy  
id  
ig  
ii  
is  
it ‘it-CH’, ‘it-SM’, ‘it-VA’
ja  
jgo  
jmc  
ka  
kab  
kam  
kde  
kea  
khq  
ki  
kk  
kl  
kln  
km  
kn  
ko ‘ko-KP’
kok  
ks  
ksb  
ksf  
ksh  
kw  
ky  
lag  
lb  
lg  
lkt  
ln ‘ln-AO’, ‘ln-CF’, ‘ln-CG’
lo  
lrc ‘lrc-IQ’
lt  
lu  
luo  
luy  
lv  
mas ‘mas-TZ’
mer  
mfe  
mg  
mgh  
mgo  
mk  
ml  
mn  
mr  
ms ‘ms-BN’, ‘ms-SG’
mt  
mua  
my  
mzn  
naq  
nb ‘nb-SJ’
nd  
ne ‘ne-IN’
nl ‘nl-AW’, ‘nl-BE’, ‘nl-BQ’, ‘nl-CW’, ‘nl-SR’, ‘nl-SX’
nmg  
nn  
nnh  
nus  
nyn  
om ‘om-KE’
or  
os ‘os-RU’
pa  
pa-Arab  
pa-Guru  
pl  
ps  
pt ‘pt-AO’, ‘pt-CH’, ‘pt-CV’, ‘pt-GQ’, ‘pt-GW’, ‘pt-LU’, ‘pt-MO’, ‘pt-MZ’, ‘pt-PT’, ‘pt-ST’, ‘pt-TL’
qu ‘qu-BO’, ‘qu-EC’
rm  
rn  
ro ‘ro-MD’
rof  
ru ‘ru-BY’, ‘ru-KG’, ‘ru-KZ’, ‘ru-MD’, ‘ru-UA’
rw  
rwk  
sah  
saq  
sbp  
se ‘se-FI’, ‘se-SE’
seh  
ses  
sg  
shi  
shi-Latn  
shi-Tfng  
si  
sk  
sl  
smn  
sn  
so ‘so-DJ’, ‘so-ET’, ‘so-KE’
sq ‘sq-MK’, ‘sq-XK’
sr  
sr-Cyrl ‘sr-Cyrl-BA’, ‘sr-Cyrl-ME’, ‘sr-Cyrl-XK’
sr-Latn ‘sr-Latn-BA’, ‘sr-Latn-ME’, ‘sr-Latn-XK’
sv ‘sv-AX’, ‘sv-FI’
sw ‘sw-CD’, ‘sw-KE’, ‘sw-UG’
ta ‘ta-LK’, ‘ta-MY’, ‘ta-SG’
te  
teo ‘teo-KE’
th  
ti ‘ti-ER’
tl  
to  
tr ‘tr-CY’
twq  
tzm  
ug  
uk  
ur ‘ur-IN’
uz  
uz-Arab  
uz-Cyrl  
uz-Latn  
vi  
vun  
wae  
xog  
yav  
yi  
yo ‘yo-BJ’
yue  
zgh  
zh  
zh-Hans ‘zh-Hans-HK’, ‘zh-Hans-MO’, ‘zh-Hans-SG’
zh-Hant ‘zh-Hant-HK’, ‘zh-Hant-MO’
zu  

Contributing

Contributions are welcome, and they are greatly appreciated! Every little bit helps, and credit will always be given.

You can contribute in many ways:

Types of Contributions

Report Bugs

Report bugs at https://github.com/scrapinghub/dateparser/issues.

If you are reporting a bug, please include:

  • Your operating system name and version.
  • Any details about your local setup that might be helpful in troubleshooting.
  • Detailed steps to reproduce the bug.
Fix Bugs and Implement Features

Look through the GitHub issues for bugs and feature requests. To avoid duplicate efforts, try to choose issues without related PRs or with staled PRs. We also encourage you to add new languages to the existing stack.

Write Documentation

Dateparser could always use more documentation, whether as part of the official Dateparser docs, in docstrings, or even on the web in blog posts, articles, and such.

After you make local changes to the documentation, you will be able to build the project running:

tox -e docs

Then open .tox/docs/tmp/html/index.html in a web browser to see your local build of the documentation.

Note

If you don’t have tox installed, you need to install it first using pip install tox.

Submit Feedback

The best way to send feedback is to file an issue at https://github.com/scrapinghub/dateparser/issues.

If you are proposing a feature:

  • Explain in detail how it would work.
  • Keep the scope as narrow as possible, to make it easier to implement.
  • Remember that contributions are welcome :)

Get Started!

Ready to contribute? Here’s how to set up dateparser for local development.

  1. Fork the dateparser repo on GitHub.

  2. Clone your fork locally:

    $ git clone git@github.com:your_name_here/dateparser.git

3. Install your local copy into a virtualenv. Assuming you have virtualenvwrapper installed, this is how you set up your fork for local development:

$ mkvirtualenv dateparser
$ cd dateparser/
$ python setup.py develop

  1. Create a branch for local development:

    $ git checkout -b name-of-your-bugfix-or-feature

    Now you can make your changes locally.

5. When you’re done making changes, check that your changes pass flake8 and the tests, including testing other Python versions with tox:

 $ tox

To get ``tox``, just ``pip install`` it into your virtualenv. In addition to tests, ``tox`` checks for code style and maximum line length (119 characters).

  1. Commit your changes and push your branch to GitHub:

    $ git add .
$ git commit -m "Your detailed description of your changes."
$ git push origin name-of-your-bugfix-or-feature

  2. Submit a pull request through the GitHub website.

Pull Request Guidelines

Before you submit a pull request, check that it meets these guidelines:

  1. The pull request should include tests.
  2. If the pull request adds functionality, the docs should be updated. Put your new functionality into a function with a docstring, and add the feature to the list in README.rst.
  3. Check the pipelines (Github Actions) in the PR comments (or in https://github.com/scrapinghub/dateparser/actions) and make sure that the tests pass for all supported Python versions.
  4. Check the new project coverage in the PR comments (or in https://app.codecov.io/gh/scrapinghub/dateparser/pulls) and make sure that it remained equal or higher than previously.
  5. Follow the core developers’ advice which aims to ensure code’s consistency regardless of the variety of approaches used by many contributors.
  6. In case you are unable to continue working on a PR, please leave a short comment to notify us. We will be pleased to make any changes required to get it done.

Guidelines for Editing Translation Data

English is the primary language of Dateparser. Dates in all other languages are translated into English equivalents before they are parsed.

The language data that Dateparser uses to parse dates is in dateparser/data/date_translation_data. For each supported language, there is a Python file containing translation data.

Each translation data Python files contains different kinds of translation data for date parsing: month and week names - and their abbreviations, prepositions, conjunctions, frequently used descriptive words and phrases (like “today”), etc.

Translation data Python files are generated from the following sources:

  • Unicode CLDR data in JSON format, located at dateparser_data/cldr_language_data/date_translation_data
  • Additional data from the Dateparser community in YAML format, located at dateparser_data/supplementary_language_data/date_translation_data

If you wish to extend the data of an existing language, or add data for a new language, you must:

  1. Edit or create the corresponding file within dateparser_data/supplementary_language_data/date_translation_data

    See existing files to learn how they are defined, and see Language Data Template for details.

  2. Regenerate the corresponding file within dateparser/data/date_translation_data running the following script:

    dateparser_scripts/write_complete_data.py

  3. Write tests that cover your changes

    You should be able to find tests that cover the affected data, and use copy-and-paste to create the corresponding new test.

    If in doubt, ask Dateparser maintainers for help.

Language Data Template
two-letter language code as defined in ISO-639-1 (https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes). e.g. for English - en:
    name: language name (e.g. English)
    no_word_spacing: False (set to True for languages that do not use spaces between words)

    skip: ["words", "to", "skip", "such", "as", "and", "or", "at", "in", "alphabetical", "order"]

    pertain: []

    monday:
        - name for Monday
        - abbreviation for Monday
    tuesday:
        - as above
    wednesday:
        - as above
    thursday:
        - as above
    friday:
        - as above
    saturday:
        - as above
    sunday:
        - as above

    january:
        - name for January
        - abbreviation for January
    february:
        - as above
    march:
        - as above
    april:
        - as above
    may:
        - as above
    june:
        - as above
    july:
        - as above
    august:
        - as above
    september:
        - as above
    october:
        - as above
    november:
        - as above
    december:
        - as above

    year:
        - name for year
        - abbreviation for year
    month:
        - as above
    week:
        - as above
    day:
        - as above
    hour:
        - as above
    minute:
        - as above
    second:
        - as above

    ago:
        - words that stand
        - for "ago"

    simplifications:
        - word: replacement
        - regex: replacement
        - day before yesterday: 2 days ago

Updating the List of Supported Languages and Locales

Whenever the content of dateparser.data.languages_info.language_locale_dict is modified, use dateparser_scripts/update_supported_languages_and_locales.py to update the corresponding documentation table:

dateparser_scripts/update_supported_languages_and_locales.py

API reference

dateparser package

Subpackages
dateparser.languages package
Submodules
dateparser.languages.dictionary module
class dateparser.languages.dictionary.Dictionary(locale_info, settings=None)[source]

Bases: object

Class that modifies and stores translations and handles splitting of date string.

Parameters:
  • locale_info – Locale info (translation data) of the locale.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
Returns:

a Dictionary instance.
are_tokens_valid(tokens)[source]

Check if tokens are valid tokens for the locale.

Parameters:tokens (list) – a list of string tokens.
Returns:True if tokens are valid, False otherwise.
split(string, keep_formatting=False)[source]

Split the date string using translations in locale info.

Parameters:
  • string (str) – Date string to be splitted.
  • keep_formatting (bool) – If True, retain formatting of the date string.
Returns:

A list of string tokens formed after splitting the date string.
class dateparser.languages.dictionary.NormalizedDictionary(locale_info, settings=None)[source]

Bases: dateparser.languages.dictionary.Dictionary

exception dateparser.languages.dictionary.UnknownTokenError[source]

Bases: Exception

dateparser.languages.loader module
class dateparser.languages.loader.LocaleDataLoader[source]

Bases: object

Class that handles loading of locale instances.

get_locale(shortname)[source]

Get a locale instance.

Parameters:shortname (str) – A locale code, e.g. ‘fr-PF’, ‘qu-EC’, ‘af-NA’.
Returns:locale instance
get_locale_map(languages=None, locales=None, region=None, use_given_order=False, allow_conflicting_locales=False)[source]

Get an ordered mapping with locale codes as keys and corresponding locale instances as values.

Parameters:
  • languages (list) – A list of language codes, e.g. [‘en’, ‘es’, ‘zh-Hant’]. If locales are not given, languages and region are used to construct locales to load.
  • locales (list) – A list of codes of locales which are to be loaded, e.g. [‘fr-PF’, ‘qu-EC’, ‘af-NA’]
  • region (str) – A region code, e.g. ‘IN’, ‘001’, ‘NE’. If locales are not given, languages and region are used to construct locales to load.
  • use_given_order (bool) – If True, the returned mapping is ordered in the order locales are given.
  • allow_conflicting_locales (bool) – if True, locales with same language and different region can be loaded.
Returns:

ordered locale code to locale instance mapping
get_locales(languages=None, locales=None, region=None, use_given_order=False, allow_conflicting_locales=False)[source]

Yield locale instances.

Parameters:
  • languages (list) – A list of language codes, e.g. [‘en’, ‘es’, ‘zh-Hant’]. If locales are not given, languages and region are used to construct locales to load.
  • locales (list) – A list of codes of locales which are to be loaded, e.g. [‘fr-PF’, ‘qu-EC’, ‘af-NA’]
  • region (str) – A region code, e.g. ‘IN’, ‘001’, ‘NE’. If locales are not given, languages and region are used to construct locales to load.
  • use_given_order (bool) – If True, the returned mapping is ordered in the order locales are given.
  • allow_conflicting_locales (bool) – if True, locales with same language and different region can be loaded.
Yield:

locale instances
dateparser.languages.locale module
class dateparser.languages.locale.Locale(shortname, language_info)[source]

Bases: object

Class that deals with applicability and translation from a locale.

Parameters:
  • shortname (str) – A locale code, e.g. ‘fr-PF’, ‘qu-EC’, ‘af-NA’.
  • language_info (dict) – Language info (translation data) of the language the locale belongs to.
Returns:

A Locale instance
static clean_dictionary(dictionary, threshold=2)[source]
count_applicability(text, strip_timezone=False, settings=None)[source]
get_wordchars_for_detection(settings)[source]
is_applicable(date_string, strip_timezone=False, settings=None)[source]

Check if the locale is applicable to translate date string.

Parameters:
  • date_string (str) – A string representing date and/or time in a recognizably valid format.
  • strip_timezone (bool) – If True, timezone is stripped from date string.
Returns:

boolean value representing if the locale is applicable for the date string or not.
to_parserinfo(base_cls=<class 'dateutil.parser._parser.parserinfo'>)[source]
translate(date_string, keep_formatting=False, settings=None)[source]

Translate the date string to its English equivalent.

Parameters:
  • date_string (str) – A string representing date and/or time in a recognizably valid format.
  • keep_formatting (bool) – If True, retain formatting of the date string after translation.
Returns:

translated date string.
dateparser.languages.validation module
class dateparser.languages.validation.LanguageValidator[source]

Bases: object

VALID_KEYS = ['name', 'skip', 'pertain', 'simplifications', 'no_word_spacing', 'ago', 'in', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday', 'january', 'february', 'march', 'april', 'may', 'june', 'july', 'august', 'september', 'october', 'november', 'december', 'year', 'month', 'week', 'day', 'hour', 'minute', 'second', 'sentence_splitter_group']
classmethod get_logger()[source]
logger = None
classmethod validate_info(language_id, info)[source]
Module contents
dateparser.calendars package
Submodules
Module contents
class dateparser.calendars.CalendarBase(source)[source]

Bases: object

Base setup class for non-Gregorian calendar system.

Parameters:source (str) – Date string passed to calendar parser.
Submodules
dateparser.conf module
exception dateparser.conf.SettingValidationError[source]

Bases: ValueError

class dateparser.conf.Settings(settings=None)[source]

Bases: object

Control and configure default parsing behavior of dateparser. Currently, supported settings are:

  • DATE_ORDER
  • PREFER_LOCALE_DATE_ORDER
  • TIMEZONE
  • TO_TIMEZONE
  • RETURN_AS_TIMEZONE_AWARE
  • PREFER_DAY_OF_MONTH
  • PREFER_DATES_FROM
  • RELATIVE_BASE
  • STRICT_PARSING
  • REQUIRE_PARTS
  • SKIP_TOKENS
  • NORMALIZE
  • RETURN_TIME_AS_PERIOD
  • PARSERS
  • DEFAULT_LANGUAGES
  • LANGUAGE_DETECTION_CONFIDENCE_THRESHOLD
classmethod get_key(settings=None)[source]
replace(mod_settings=None, **kwds)[source]
dateparser.conf.apply_settings(f)[source]
dateparser.conf.check_settings(settings)[source]

Check if provided settings are valid, if not it raises SettingValidationError. Only checks for the modified settings.

dateparser.date module
class dateparser.date.DateData(*, date_obj=None, period=None, locale=None)[source]

Bases: object

Class that represents the parsed data with useful information. It can be accessed with square brackets like a dict object.

class dateparser.date.DateDataParser(languages=None, locales=None, region=None, try_previous_locales=False, use_given_order=False, settings=None, detect_languages_function=None)[source]

Bases: object

Class which handles language detection, translation and subsequent generic parsing of string representing date and/or time.

Parameters:
  • languages (list) – A list of language codes, e.g. [‘en’, ‘es’, ‘zh-Hant’]. If locales are not given, languages and region are used to construct locales for translation.
  • locales (list) – A list of locale codes, e.g. [‘fr-PF’, ‘qu-EC’, ‘af-NA’]. The parser uses only these locales to translate date string.
  • region (str) – A region code, e.g. ‘IN’, ‘001’, ‘NE’. If locales are not given, languages and region are used to construct locales for translation.
  • try_previous_locales (bool) – If True, locales previously used to translate date are tried first.
  • use_given_order (bool) – If True, locales are tried for translation of date string in the order in which they are given.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
  • detect_languages_function (function) – A function for language detection that takes as input a text and a confidence_threshold, and returns a list of detected language codes. Note: this function is only used if languages and locales are not provided.
Returns:

A parser instance
Raises:

ValueError: Unknown Language, TypeError: Languages argument must be a list, SettingValidationError: A provided setting is not valid.
get_date_data(date_string, date_formats=None)[source]

Parse string representing date and/or time in recognizable localized formats. Supports parsing multiple languages and timezones.

Parameters:
  • date_string (str) – A string representing date and/or time in a recognizably valid format.
  • date_formats (list) – A list of format strings using directives as given here. The parser applies formats one by one, taking into account the detected languages.
Returns:

a DateData object.
Raises:

ValueError - Unknown Language

Note

Period values can be a ‘day’ (default), ‘week’, ‘month’, ‘year’, ‘time’.

Period represents the granularity of date parsed from the given string.

In the example below, since no day information is present, the day is assumed to be current day 16 from current date (which is June 16, 2015, at the moment of writing this). Hence, the level of precision is month:

>>> DateDataParser().get_date_data('March 2015')
DateData(date_obj=datetime.datetime(2015, 3, 16, 0, 0), period='month', locale='en')

Similarly, for date strings with no day and month information present, level of precision is year and day 16 and month 6 are from current_date.

>>> DateDataParser().get_date_data('2014')
DateData(date_obj=datetime.datetime(2014, 6, 16, 0, 0), period='year', locale='en')

Dates with time zone indications or UTC offsets are returned in UTC time unless specified using Settings.

>>> DateDataParser().get_date_data('23 March 2000, 1:21 PM CET')
DateData(date_obj=datetime.datetime(2000, 3, 23, 13, 21, tzinfo=<StaticTzInfo 'CET'>),
period='day', locale='en')
get_date_tuple(*args, **kwargs)[source]
locale_loader = None
dateparser.date.date_range(begin, end, **kwargs)[source]
dateparser.date.get_date_from_timestamp(date_string, settings, negative=False)[source]
dateparser.date.get_intersecting_periods(low, high, period='day')[source]
dateparser.date.parse_with_formats(date_string, date_formats, settings)[source]

Parse with formats and return a dictionary with ‘period’ and ‘obj_date’.

Returns:datetime.datetime, dict or None
dateparser.date.sanitize_date(date_string)[source]
dateparser.date.sanitize_spaces(date_string)[source]
dateparser.date_parser module
class dateparser.date_parser.DateParser[source]

Bases: object

parse(date_string, parse_method, settings=None)[source]
dateparser.freshness_date_parser module
class dateparser.freshness_date_parser.FreshnessDateDataParser[source]

Bases: object

Parses date string like “1 year, 2 months ago” and “3 hours, 50 minutes ago”

get_date_data(date_string, settings=None)[source]
get_kwargs(date_string)[source]
get_local_tz()[source]
parse(date_string, settings)[source]
dateparser.timezone_parser module
class dateparser.timezone_parser.StaticTzInfo(name, offset)[source]

Bases: datetime.tzinfo

dst(dt)[source]

datetime -> DST offset as timedelta positive east of UTC.

localize(dt, is_dst=False)[source]
tzname(dt)[source]

datetime -> string name of time zone.

utcoffset(dt)[source]

datetime -> timedelta showing offset from UTC, negative values indicating West of UTC

dateparser.timezone_parser.build_tz_offsets(search_regex_parts)[source]
dateparser.timezone_parser.convert_to_local_tz(datetime_obj, datetime_tz_offset)[source]
dateparser.timezone_parser.get_local_tz_offset()[source]
dateparser.timezone_parser.pop_tz_offset_from_string(date_string, as_offset=True)[source]
dateparser.timezone_parser.word_is_tz(word)[source]
dateparser.timezones module
dateparser.utils module
dateparser.utils.apply_dateparser_timezone(utc_datetime, offset_or_timezone_abb)[source]
dateparser.utils.apply_timezone(date_time, tz_string)[source]
dateparser.utils.apply_timezone_from_settings(date_obj, settings)[source]
dateparser.utils.apply_tzdatabase_timezone(date_time, pytz_string)[source]
dateparser.utils.combine_dicts(primary_dict, supplementary_dict)[source]
dateparser.utils.find_date_separator(format)[source]
dateparser.utils.get_last_day_of_month(year, month)[source]
dateparser.utils.get_logger()[source]
dateparser.utils.get_next_leap_year(year)[source]
dateparser.utils.get_previous_leap_year(year)[source]
dateparser.utils.get_timezone_from_tz_string(tz_string)[source]
dateparser.utils.localize_timezone(date_time, tz_string)[source]
dateparser.utils.normalize_unicode(string, form='NFKD')[source]
dateparser.utils.registry(cls)[source]
dateparser.utils.set_correct_day_from_settings(date_obj, settings, current_day=None)[source]

Set correct day attending the PREFER_DAY_OF_MONTH setting.

dateparser.utils.setup_logging()[source]
dateparser.utils.strip_braces(date_string)[source]
Module contents
dateparser.parse(date_string, date_formats=None, languages=None, locales=None, region=None, settings=None, detect_languages_function=None)[source]

Parse date and time from given date string.

Parameters:
  • date_string (str) – A string representing date and/or time in a recognizably valid format.
  • date_formats (list) –

    A list of format strings using directives as given here. The parser applies formats one by one, taking into account the detected languages/locales.

  • languages (list) – A list of language codes, e.g. [‘en’, ‘es’, ‘zh-Hant’]. If locales are not given, languages and region are used to construct locales for translation.
  • locales (list) – A list of locale codes, e.g. [‘fr-PF’, ‘qu-EC’, ‘af-NA’]. The parser uses only these locales to translate date string.
  • region (str) – A region code, e.g. ‘IN’, ‘001’, ‘NE’. If locales are not given, languages and region are used to construct locales for translation.
  • settings (dict) – Configure customized behavior using settings defined in dateparser.conf.Settings.
  • detect_languages_function (function) – A function for language detection that takes as input a string (the date_string) and a confidence_threshold, and returns a list of detected language codes. Note: this function is only used if languages and locales are not provided.
Returns:

Returns datetime representing parsed date if successful, else returns None
Return type:

datetime.
Raises:

ValueError: Unknown Language, TypeError: Languages argument must be a list, SettingValidationError: A provided setting is not valid.

Credits

Currently, more than 100 committers have contributed to this project, making this contributors list really hard to maintain, so we have decided to stop updating this list.

To see the people behind this code, you can run git shortlog -s -n or visit the contributions section in Github: https://github.com/scrapinghub/dateparser/graphs/contributors

We really appreciate all the people that has contributed to this project with their time and ideas. Special mention to Waqas Shabir (waqasshabbir), Eugene Amirov (Allactaga) and Artur Sadurski (asadurski) for creating and maintaining this awesome project.

To all of you… thank you for building and improving this!

History

1.1.2 (2022-10-20)

Improvements:

  • Added support for negative timestamp (#1060)
  • Fixed PytzUsageWarning for Python versions >= 3.6 (#1062)
  • Added support for dates with dots and spaces (#1028)
  • Improved support for Ukrainian, Croatian and Russian (#1072, #1074, #1079, #1082, #1073, #1083)
  • Added support for parsing Unix timestamps consistently regardless of timezones (#954)
  • Improved tests (#1086)

1.1.1 (2022-03-17)

Improvements:

  • Fixed issue with regex library by pinning dependencies to an earlier version (< 2022.3.15, #1046).
  • Extended support for Russian language dates starting with lowercase (#999).
  • Allowed to use_given_order for languages too (#997).
  • Fixed link to settings section (#1018).
  • Defined UTF-8 encoding for Windows (#998).
  • Fixed directories creation error in CLI utils (#1022).

1.1.0 (2021-10-04)

New features:

  • Support language detection based on langdetect, fastText, or a custom implementation (see #932)
  • Add support for ‘by <time>’ (see #839)
  • Sort default language list by internet usage (see #805)

Improvements:

  • Improved support of Chinese (#910), Czech (#977)
  • Improvements in search_dates (see #953)
  • Make order of previous locales deterministic (see #851)
  • Fix parsing with trailing space (see #841)
  • Consider RETURN_TIME_AS_PERIOD for timestamp times (see #922)
  • Exclude failing regex version (see #974)
  • Ongoing work multithreading support (see #881, #885)
  • Add demo URL (see #883)

QA:

  • Migrate pipelines from Travis CI to Github Actions (see #859, #879, #884, #886, #911, #966)
  • Use versioned CLDR data (see #825)
  • Add a script to update table of supported languages and locales (see #601)
  • Sort ‘skip’ keys in yaml files (see #844)
  • Improve test coverage (see #827)
  • Code cleanup (see #888, #907, #951, #958, #957)

1.0.0 (2020-10-29)

Breaking changes:

  • Drop support for Python 2.7 and pypy (see #727, #744, #748, #749, #754, #755, #758, #761, #763, #764, #777 and #783)
  • Now DateDataParser.get_date_data() returns a DateData object instead of a dict (see #778).
  • From now wrong settings are not silenced and raise SettingValidationError (see #797)
  • Now dateparser.parse() is deterministic and doesn’t try previous locales. Also, DateDataParser.get_date_data() doesn’t try the previous locales by default (see #781)
  • Remove the 'base-formats' parser (see #721)
  • Extract the 'no-spaces-time' parser from the 'absolute-time' parser and make it an optional parser (see #786)
  • Remove numeral_translation_data (see #782)
  • Remove the undocumented SKIP_TOKENS_PARSER and FUZZY settings (see #728, #794)
  • Remove support for using strings in date_formats (see #726)
  • The undocumented ExactLanguageSearch class has been moved to the private scope and some internal methods have changed (see #778)
  • Changes in dateparser.utils: normalize_unicode() doesn’t accept bytes as input and convert_to_unicode has been deprecated (see #749)

New features:

  • Add Python 3.9 support (see #732, #823)
  • Detect hours separated with a period/dot (see #741)
  • Add support for “decade” (see #762)
  • Add support for the hijri calendar in Python ≥ 3.6 (see #718)

Improvements:

  • New logo! (see #719)
  • Improve the README and docs (see #779, #722)
  • Fix the “calendars” extra (see #740)
  • Fix leap years when PREFER_DATES_FROM is set (see #738)
  • Fix STRICT_PARSING setting in no-spaces-time parser (see #715)
  • Consider RETURN_AS_TIME_PERIOD setting for relative-time parser (see #807)
  • Parse the 24hr time format with meridian info (see #634)
  • Other small improvements (see #698, #709, #710, #712, #730, #731, #735, #739, #784, #788, #795 and #801)

0.7.6 (2020-06-12)

Improvements:

  • Rename scripts to dateparser_scripts to avoid name collisions with modules from other packages or projects (see #707)

0.7.5 (2020-06-10)

New features:

  • Add Python 3.8 support (see #664)
  • Implement a REQUIRE_PARTS setting (see #703)
  • Add support for subscript and superscript numbers (see #684)
  • Extended French support (see #672)
  • Extended German support (see #673)

Improvements:

  • Migrate test suite to Pytest (see #662)
  • Add test to check the yaml and json files content (see #663 and #692)
  • Add flake8 pipeline with pytest-flake8 (see #665)
  • Add partial support for 8-digit dates without separators (see #639)
  • Fix possible OverflowError errors and explicitly avoid to raise ValueError when parsing relative dates (see #686)
  • Fix double-digit GMT and UTC parsing (see #632)
  • Fix bug when using DATE_ORDER (see #628)
  • Fix bug when parsing relative time with timezone (see #503)
  • Fix milliseconds parsing (see #572 and #661)
  • Fix wrong values to be interpreted as 'future' in PREFER_DATES_FROM (see #629)
  • Other small improvements (see #667, #675, #511, #626, #512, #509, #696, #702 and #699)

0.7.4 (2020-03-06)

New features:

  • Extended Norwegian support (see #598)
  • Implement a PARSERS setting (see #603)

Improvements:

  • Add support for PREFER_DATES_FROM in relative/freshness parser (see #414)
  • Add support for PREFER_DAY_OF_MONTH in base-formats parser (see #611)
  • Added UTC -00:00 as a valid offset (see #574)
  • Fix support for “one” (see #593)
  • Fix TypeError when parsing some invalid dates (see #536)
  • Fix tokenizer for non recognized characters (see #622)
  • Prevent installing regex 2019.02.19 (see #600)
  • Resolve DeprecationWarning related to raw string escape sequences (see #596)
  • Implement a tox environment to build the documentation (see #604)
  • Improve tests stability (see #591, #605)
  • Documentation improvements (see #510, #578, #619, #614, #620)
  • Performance improvements (see #570, #569, #625)

0.7.3 (2020-03-06)

  • Broken version

0.7.2 (2019-09-17)

Features:

  • Extended Czech support
  • Added time to valid periods
  • Added timezone information to dates found with search_dates()
  • Support strings as date formats

Improvements:

  • Fixed Collections ABCs depreciation warning
  • Fixed dates with trailing colons not being parsed
  • Fixed date format override on any settings change
  • Fixed parsing current weekday as past date, regardless of settings
  • Added UTC -2:30 as a valid offset
  • Added Python 3.7 to supported versions, dropped support for Python 3.3 and 3.4
  • Moved to importlib from imp where possible
  • Improved support for Catalan
  • Documentation improvements

0.7.1 (2019-02-12)

Features/news:

  • Added detected language to return value of search_dates()
  • Performance improvements
  • Refreshed versions of dependencies

Improvements:

  • Fixed unpickleable DateTime objects with timezones
  • Fixed regex pattern to avoid new behaviour of re.split in Python 3.7
  • Fixed an exception thrown when parsing colons
  • Fixed tests failing on days with number greater than 30
  • Fixed ZeroDivisionError exceptions

0.7.0 (2018-02-08)

Features added during Google Summer of Code 2017:

  • Harvesting language data from Unicode CLDR database (https://github.com/unicode-cldr/cldr-json), which includes over 200 locales (#321) - authored by Sarthak Maddan. See full currently supported locale list in README.
  • Extracting dates from longer strings of text (#324) - authored by Elena Zakharova. Special thanks for their awesome contributions!

New features:

  • Added (independently from CLDR) Georgian (#308) and Swedish (#305)

Improvements:

  • Improved support of Chinese (#359), Thai (#345), French (#301, #304), Russian (#302)
  • Removed ruamel.yaml from dependencies (#374). This should reduce the number of installation issues and improve performance as the result of moving away from YAML as basic data storage format. Note that YAML is still used as format for support language files.
  • Improved performance through using pre-compiling frequent regexes and lazy loading of data (#293, #294, #295, #315)
  • Extended tests (#316, #317, #318, #323)
  • Updated nose_parameterized to its current package, parameterized (#381)

Planned for next release:

  • Full language and locale names
  • Performance and stability improvements
  • Documentation improvements

0.6.0 (2017-03-13)

New features:

  • Consistent parsing in terms of true python representation of date string. See #281
  • Added support for Bangla, Bulgarian and Hindi languages.

Improvements:

  • Major bug fixes related to parser and system’s locale. See #277, #282
  • Type check for timezone arguments in settings. see #267
  • Pinned dependencies’ versions in requirements. See #265
  • Improved support for cn, es, dutch languages. See #274, #272, #285

Packaging:

  • Make calendars extras to be used at the time of installation if need to use calendars feature.

0.5.1 (2016-12-18)

New features:

  • Added support for Hebrew

Improvements:

  • Safer loading of YAML. See #251
  • Better timezone parsing for freshness dates. See #256
  • Pinned dependencies’ versions in requirements. See #265
  • Improved support for zh, fi languages. See #249, #250, #248, #244

0.5.0 (2016-09-26)

New features:

  • DateDataParser now also returns detected language in the result dictionary.
  • Explicit and lucid timezone conversion for a given datestring using TIMEZONE, TO_TIMEZONE settings.
  • Added Hungarian language.
  • Added setting, STRICT_PARSING to ignore incomplete dates.

Improvements:

  • Fixed quite a few parser bugs reported in issues #219, #222, #207, #224.
  • Improved support for chinese language.
  • Consistent interface for both Jalali and Hijri parsers.

0.4.0 (2016-06-17)

New features:

  • Support for Language based date order preference while parsing ambiguous dates.
  • Support for parsing dates with no spaces in between components.
  • Support for custom date order preference using settings.
  • Support for parsing generic relative dates in future.e.g. “tomorrow”, “in two weeks”, etc.
  • Added RELATIVE_BASE settings to set date context to any datetime in past or future.
  • Replaced dateutil.parser.parse with dateparser’s own parser.

Improvements:

  • Added simplifications for “12 noon” and “12 midnight”.
  • Fixed several bugs
  • Replaced PyYAML library by its active fork ruamel.yaml which also fixed the issues with installation on windows using python35.
  • More predictable date_formats handling.

0.3.5 (2016-04-27)

New features:

  • Danish language support.
  • Japanese language support.
  • Support for parsing date strings with accents.

Improvements:

  • Transformed languages.yaml into base file and separate files for each language.
  • Fixed vietnamese language simplifications.
  • No more version restrictions for python-dateutil.
  • Timezone parsing improvements.
  • Fixed test environments.
  • Cleaned language codes. Now we strictly follow codes as in ISO 639-1.
  • Improved chinese dates parsing.

0.3.4 (2016-03-03)

Improvements:

  • Fixed broken version 0.3.3 by excluding latest python-dateutil version.

0.3.3 (2016-02-29)

New features:

  • Finnish language support.

Improvements:

  • Faster parsing with switching to regex module.
  • RETURN_AS_TIMEZONE_AWARE setting to return tz aware date object.
  • Fixed conflicts with month/weekday names similarity across languages.

0.3.2 (2016-01-25)

New features:

  • Added Hijri Calendar support.
  • Added settings for better control over parsing dates.
  • Support to convert parsed time to the given timezone for both complete and relative dates.

Improvements:

  • Fixed problem with caching datetime.now() in FreshnessDateDataParser.
  • Added month names and week day names abbreviations to several languages.
  • More simplifications for Russian and Ukrainian languages.
  • Fixed problem with parsing time component of date strings with several kinds of apostrophes.

0.3.1 (2015-10-28)

New features:

  • Support for Jalali Calendar.
  • Belarusian language support.
  • Indonesian language support.

Improvements:

  • Extended support for Russian and Polish.
  • Fixed bug with time zone recognition.
  • Fixed bug with incorrect translation of “second” for Portuguese.

0.3.0 (2015-07-29)

New features:

  • Compatibility with Python 3 and PyPy.

Improvements:

  • languages.yaml data cleaned up to make it human-readable.
  • Improved Spanish date parsing.

0.2.1 (2015-07-13)

  • Support for generic parsing of dates with UTC offset.
  • Support for Tagalog/Filipino dates.
  • Improved support for French and Spanish dates.

0.2.0 (2015-06-17)

  • Easy to use parse function
  • Languages definitions using YAML.
  • Using translation based approach for parsing non-english languages. Previously, dateutil.parserinfo was used for language definitions.
  • Better period extraction.
  • Improved tests.
  • Added a number of new simplifications for more comprehensive generic parsing.
  • Improved validation for dates.
  • Support for Polish, Thai and Arabic dates.
  • Support for pytz timezones.
  • Fixed building and packaging issues.

0.1.0 (2014-11-24)

  • First release on PyPI.