Error when running on python 3.7

Hey, homebrew upgraded my python to 3.7 and since the linter stopped woking, spitting out this error:

[Linter] Error running Flake8 Error: /usr/local/lib/python3.7/site-packages/pycodestyle.py:113: FutureWarning: Possible nested set at position 1
  EXTRANEOUS_WHITESPACE_REGEX = re.compile(r'[[({] | []}),;:]')
    at ChildProcess.<anonymous> (/Users/Tadeo/.atom/packages/linter-eslint/node_modules/sb-exec/lib/index.js:56:20)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Socket.stream.socket.on (internal/child_process.js:346:11)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at Pipe._handle.close [as _onclose] (net.js:554:12)

When I run flake8 manually in project it gives the same message as a warning and then runs normally

[jscottcronin]

for Python 3.7.2 (both Anaconda version and brew installed version) with:

• pep8==1.7.1
• pycodestyle==2.4.0

Update this line:

EXTRANEOUS_WHITESPACE_REGEX = re.compile(r'[\[({] | [\]}),;:]')

in BOTH: lib/python3.7/site-packages/pycodestyle.py lib/python3.7/site-packages/pep8.py

[cmfcruz]

I resolved this by reinstalling flake8.

pip3 install --force flake8

Upgrading to the latest version might also help for others.

pip3 install --upgrade flake8