Multiple statements on one line reported when using NamedTuple

[asottile]

In GitLab by @michaeldel on Jul 23, 2017, 17:00

Please describe how you installed Flake8

$ pip install -U flake8

Please provide the exact, unmodified output of flake8 --bug-report

{
  "dependencies": [
    {
      "dependency": "setuptools",
      "version": "36.0.1"
    }
  ],
  "platform": {
    "python_implementation": "CPython",
    "python_version": "3.6.1",
    "system": "Linux"
  },
  "plugins": [
    {
      "plugin": "mccabe",
      "version": "0.6.1"
    },
    {
      "plugin": "pycodestyle",
      "version": "2.3.1"
    },
    {
      "plugin": "pyflakes",
      "version": "1.5.0"
    }
  ],
  "version": "3.3.0"
}

Please describe the problem or feature

It seems that using field names containing keywords (such as for or while) in a typing.NamedTuple makes flake8 report this error E701 multiple statements on one line (colon)

If this is a bug report, please explain with examples (and example code) what you expected to happen and what actually happened.

Here is a working example showing the bug:

from typing import NamedTuple


class MyNamedTuple(NamedTuple):
    domestic: str
    foreign: str
    fareign: str
    whiley: str


if __name__ == '__main__':
    mnt = MyNamedTuple('dom', 'for', 'far', 'whi')
    print(mnt)

I can run it without any problem:

$ python script.py
MyNamedTuple(domestic='dom', foreign='for', fareign='far', whiley='whi')

However, flake8 reports two errors, concerning the fields containing for and while in that case:

$ flake8 script.py
flake8_namedtuple.py:6:12: E701 multiple statements on one line (colon)
flake8_namedtuple.py:8:11: E701 multiple statements on one line (colon)

[asottile]

In GitLab by @sigmavirus24 on Jul 24, 2017, 04:09

This is actually a bug in pycodestyle reported here:

• NamedTuple defined with Python 3.6 type hints is reported with E701 pycodestyle#635
• error with annotation only lines starting "for" pycodestyle#661

And they've both been fixed but need an upstream release.

[asottile]

In GitLab by @sigmavirus24 on Jul 24, 2017, 04:09

closed