Bump astroid from 2.1.0 to 2.2.0 in /requirements

[dependabot-preview]

Bumps astroid from 2.1.0 to 2.2.0.

Changelog

Sourced from astroid's changelog.

What's New in astroid 2.2.0?

Release Date: 2019-02-27

• Fix a bug concerning inference of calls to numpy function that should not return Tuple or List instances.

Close pylint-dev/pylint#2436

• typed_ast gets installed for Python 3.7, meaning type comments can now work on 3.7.

• Fix a bug concerning inference of unary operators on numpy types.

  Close False positive E1130 invalid-unary-operand-type for Numpy array pylint-dev/pylint#2436 (first part)

• Fix a crash with typing.NamedTuple and empty fields. Close "invalid syntax" on typing.NamedTuple pylint-dev/pylint#2745

• Add a proper strerror inference to the OSError exceptions.

  Close E1101: Class 'strerror' has no 'lower' member (no-member) pylint-dev/pylint#2553

• Support non-const nodes as values of Enum attributes.

  Close #612

• Fix a crash in the enum brain tip caused by non-assign members in class definitions.

  Close AENUM creating class bodies dynamically causes pylint warning pylint-dev/pylint#2719

• brain_numpy returns an undefined type for numpy methods to avoid assignment-from-no-return

  Close numpy.logical_or gives false error assignment-from-no-return pylint-dev/pylint#2694

• Fix a bug where a call to a function that has been previously called via
  functools.partial was wrongly inferred

  Close Using functools partial on a function gives a too-many-function-args when using the function pylint-dev/pylint#2588

• Fix a recursion error caused by inferring the slice builtin.

  Close Pylint crash with maximum recursion depth exceeded pylint-dev/pylint#2667

• Remove the restriction that "old style classes" cannot have a MRO.

  This does not make sense any longer given that we run against Python 3
  code.
  Close Exception: NotImplementedError: Could not obtain mro for old-style classes. pylint-dev/pylint#2701

• Added more builtin exceptions attributes. Close #580

... (truncated)

Commits

• 9eddca3 When picking the parse function, make sure to parse with the right minor version
• 87db3f5 Disable test that does not make sense on versions older than Python 3.6
• 9b6445d Prepare 2.2.0
• e5fe824 Remove merge marker
• cee7875 Don't clear the manager caching any longer
• 08cbcba Use the right pytest methods for setup and teardown
• f6310d8 Use the same versions in tox as in pkginfo
• 16b70e3 Added 2 more missing _ssl constants (#648)
• 67f7daa Merge pull request #643 from hippo91/bug_pylint_2436
• bb10f80 Merges master
• Additional commits viewable in compare view

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[das7pad]

We might have to move to python version specific requirements files.

[das7pad]

That's odd. pip-compile does not forward the environment marker from astroids install_requires [1].

[1] https://github.com/PyCQA/astroid/blob/8a3d8b908da5d80c7bf6857d94333e7c87b5c176/astroid/__pkginfo__.py#L33

[das7pad]

Hi @greysteil!

base on the diff in this PR and this snippet from astroid, you seem to be using a python version below 3.7 for dependabot. pip-compile continues with the packages that pass the constrains check in the current environment. In this case it has an influence on the picked version for typed-ast.

Discussion on this is here and there.
TL;DR: pip-compile is not (yet) able/willing to support multiple environments.

What do you think about multiple python versions one could pick from for dependabot?

Cheers!

[greysteil]

Hmmm. Dependabot actually runs multiple Pythons - if you add a .python-version file to this repo it will use whatever is specified there.

[das7pad]

Thank you for your response. I will give it a try, once we agree on a specific version!

Note: The .python-version file does not seem to be documented [1].
Btw: The google search reviled this issue https://github.com/dependabot/feedback/issues/288 instead. The project referenced in the #288 could profit from two requirements files: one for py2.7 and one for py3. A config option for the python version would be better suited then.

[1] https://www.google.com/search?q=dependabot+".python-version"

[dependabot-preview]

Superseded by #153.