Remove all Python 2.x items

[mperrin]

Issue by mperrin
Thursday Aug 16, 2018 at 01:21 GMT
Originally opened as mperrin/poppy#262

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Borrowing from the to-do list at astropy/astropy#6234

• Remove __future__ imports
• Make sure we remove the unicode_literals text fixture
• Search for and remove any 'six' imports and in some cases replace by the appropriate Python 3 import.
• Search for and remove any if six.PY2 blocks and also search for sys.version_info or any usage of minversion or Looseversion.
• Update CI configuration to not run tests on Python 2
• Search for comments that mention Python (either 2 or 3 or none of them) to see if anything can be updated
• Remove python2 related info from the documentation

[mperrin]

Comment by mperrin
Thursday Aug 16, 2018 at 01:22 GMT

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also

• remove the back ported version of lru_cache in the vendor directory.

[mperrin]

Comment by mperrin
Thursday Aug 16, 2018 at 01:25 GMT

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and update the documentation and setup config to enforce a minimum Python version of 3.4.

[mperrin]

Min version 3.5 (same as astropy currently) enforcement added in 83ba201

[mperrin]

• remove from __future__ imports

[mperrin]

Found one more Py2-ism in the testing code, which gets removed in #264. Other than that, this code all appears thoroughly de-python-2'ed at this point. I think it's sufficient for this issue to be considered closed.