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Version 3.3.7

2024-02-??

Version 3.3.6

2023-05-03

  • New method: Units.__dask_tokenization__ (NCAS-CMS#50)

Version 3.3.5

2022-09-22

  • Change default calendar from 'gregorian' to 'standard' (NCAS-CMS#45)
  • Changed CF version to 1.10 (NCAS-CMS#47)
  • Remove calls to deprecated distutils, using packaging instead
  • New dependency: packaging>=20.0

Version 3.3.4

2021-08-09

  • Now supports the Windows operating system (NCAS-CMS#31)

Version 3.3.3

2021-05-24

  • Fixed error in setup.py that prevented installation via pip.

Version 3.3.2

2021-05-21

  • Refactor to remove the dependency on cftime.utime, that was removed at cftime version 1.5.0 (NCAS-CMS#25)
  • Changed dependency: cftime>=1.5.0

Version 3.3.1

2020-11-27

  • Make invalid units non-equivalent and non-equal (NCAS-CMS#19)

Version 3.3.0

2020-10-09

  • Python 3.5 support deprecated (3.5 was retired on 2020-09-13)
  • Make Units('') and Units() equivalent (but still not equal).

Version 3.2.9

2020-07-24

  • New attribute: cfunits.Units.has_offset
  • cftime.Units.reftime now always returns a cftime.datetime object.
  • Fixed bug that caused failure when hashing reference time units.
  • Changed dependency: cftime>=1.2.1

Version 3.2.8

2020-07-02

  • Fixed bug that caused failure when an int or float was input to cfunits.Units.conform (NCAS-CMS#9).
  • Allowed list and tuple to be input to cfunits.Units.conform (NCAS-CMS#9).

Version 3.2.7

2020-05-20

  • Minor changes to allow for cftime==1.1.3
  • Changed dependency: cftime>=1.1.3

Version 3.2.6

2020-04-27

  • Fixed bug that caused a KeyError: '1r' exception, due to an incorrect format statement.

Version 3.2.5

2020-03-26

  • Check that the udunits2 library exists (with thanks to Gareth Jones).
  • Changed dependency: cftime>=1.1.1

Version 3.2.4

2020-01-07

  • Use ctypes.util.find_library to get name of udunits2 library (with thanks to Lance Helsten)

Version 3.2.3

2019-11-28

  • Fixed a bug that raised an exception for units specified by non-strings (NCAS-CMS#1).

Version 3.2.2

2019-09-16

  • Added _units_since_reftime attribute.

Version 3.2.0

2019-09-12

  • Added _canonical_calendar attribute.
  • Improved testing in Unit.equivalent.

Version 3.1.1

2019-08-02

  • Incremented version.

Version 3.1.0

2019-08-02

  • Added reason_notvalid attribute, and improved handling of invalid calendars.

Version 3.0.0

2019-05-28

  • Python 2 support deprecated.

Version 1.9

2019-02-14

  • Updated documentation to mention the isvalid attribute.

Version 1.8

2018-09-13

  • Trap "ValueError: negative reference year in time units, must be >= 1" so that a Units object is returned that has isvalid=False.
  • Added "message" attribute that reports on why bad units are bad. Is "None" if units are OK.

Version 1.7

2018-08-23

  • Python 3 compatibility (with many thanks to Eric Hutton)

Version 1.6

2018-08-23

  • Bad units now do not raise an exception, but may be checked with the "isvalid" attribute.

Version 1.5

2017-02-24

  • Removed explicit dependency checks
  • brought in line with cf-python v1.5

Version 1.1.4

2016-02-17

  • Bug fix to setup.py

Version 1.1

2015-10-28

  • Bug fix to Units.conform for scalar numpy arrays.
  • Removed support for netCDF4-python versions < 1.1.1
  • Same as cf/units.py in cf-python version 1.1

Version 1.0

2015-05-27

  • Initial release
  • Same as cf/units.py in cf-python version 1.0