[code-quality] flake8 && python 3.5.0

[Luis San Martin]

Hello,

It seems asyncio syntax is not considered for python 3.5. I couldn't
find any reported issue regarding this

i.e.

I'm on flake8 (2.4.1) with python 3.5.0. Just cloned
https://github.com/dabeaz/curio.git and got this.

pathcl at sid:~/src/curio$ flake8 ./curio/file.py

Traceback (most recent call last):
  File "/home/pathcl/.pyenv/versions/3.5.0/bin/flake8", line 11, in <module>
    sys.exit(main())
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/flake8/main.py",
line 33, in main
    report = flake8_style.check_files()
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pep8.py",
line 1672, in check_files
    runner(path)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/flake8/engine.py",
line 95, in input_file
    return fchecker.check_all(expected=expected, line_offset=line_offset)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pep8.py",
line 1412, in check_all
    self.check_ast()
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pep8.py",
line 1358, in check_ast
    checker = cls(tree, self.filename)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/flake8/_pyflakes.py",
line 43, in __init__
    withDoctest=self.withDoctest)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pyflakes/checker.py",
line 294, in __init__
    self.handleChildren(tree)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pyflakes/checker.py",
line 547, in handleChildren
    self.handleNode(node, tree)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pyflakes/checker.py",
line 589, in handleNode
    handler(node)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pyflakes/checker.py",
line 812, in CLASSDEF
    self.handleNode(stmt, node)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pyflakes/checker.py",
line 588, in handleNode
    handler = self.getNodeHandler(node.__class__)
  File "/home/pathcl/.pyenv/versions/3.5.0/lib/python3.5/site-packages/pyflakes/checker.py",
line 458, in getNodeHandler
    self._nodeHandlers[node_class] = handler = getattr(self, nodeType)
AttributeError: 'FlakesChecker' object has no attribute 'ASYNCFUNCTIONDEF'

What is going wrong?

-- 
Luis San Martin R. User #333411 linuxcounter.net