Automatic syntax checker for Python, bundled with pycodestyle, pyflakes and mccabe.
Automatic syntax checker for Python programming language, bundled with pycodestyle, pyflakes, mccabe for easy installation and use.
Questions tagged [flake8]
410 questions
8
votes
2 answers
flake8 not showing fatal erros in vscode
Vscode is not showing fatal erros in vscode. It is only highlighting warnings in the code. Example:
I have vscode running flake8 from a virtualenv with python 2.7. The settings is as following:
"python.linting.flake8Enabled": true,
I'm comparing…
Raphael Philipe
- 171
- 2
- 5
8
votes
1 answer
Is there any linter that detects blocking calls in an async function?
https://www.aeracode.org/2018/02/19/python-async-simplified/
It's not going to ruin your day if you call a non-blocking synchronous
function, like this:
def get_chat_id(name):
return "chat-%s" % name
async def main():
result =…
Anentropic
- 32,188
- 12
- 99
- 147
8
votes
1 answer
Running flake8 gives - AttributeError: 'OptionManager' object has no attribute 'config_options'
I installed flake8 using the following command.
pip3 install flake8
Executing flake8 from terminal gives the following error.
Traceback (most recent call last):
File "/home/bilesh/.local/bin/flake8", line 11, in
sys.exit(main())
…
Bilesh Ganguly
- 3,792
- 3
- 36
- 58
8
votes
4 answers
How to format Django setting file for flake8
I am kinda obsessed with formating my python code with flake8. However, I cannot find a good way to solve E501 (line too long x > 79 characters) in settings file of Django.
First it was like this (4xE501):
AUTH_PASSWORD_VALIDATORS = [
{
…
mdegis
- 2,078
- 2
- 21
- 39
7
votes
1 answer
How to satisfy "[FLAKE8 W605] invalid escape sequence '\.'" and string format in the mean time?
I have an issue in python. My original regex expression is:
f"regex(metrics_api_failure\.prod\.[\w_]+\.{method_name}\.\d+\.\d+\.[\w_]+\.[\w_]+\.sum\.60)"
(method_name is a local variable) and I got a lint warning:
"[FLAKE8 W605] invalid escape…
Aurora
- 423
- 2
- 5
- 12
7
votes
2 answers
Mypy + flake8: Is there any way to surpress warning of `F821 undefined name`
In the following code, flake8 say F821 undefined name 'B'.
But for mypy, type hint for f is neccesary.
How to ignore such warnings by flake8?
def f(b: B) -> None:
pass
class B():
pass
This example can be solved trivially: change the…
nomaddo
- 416
- 3
- 12
7
votes
2 answers
Is it possible to ignore only certain error codes for entire files in Flake8?
I'm editing a Django settings file that looks similar to the following:
# flake8: noqa
from lucy.settings.base import *
from lucy.settings.staging_production import *
# This ensures that errors from staging are tagged accordingly in Airbrake's…
Kurt Peek
- 52,165
- 91
- 301
- 526
7
votes
2 answers
Flake8 reports E999 SyntaxError
I am unable to solve the flake8 SyntaxError and although the code executes just fine.
Code without comments
import math
def answer(str_n):
sume = ((str_n * (str_n + 1)) / 2) * math.sqrt(2)
sume = int(sume)
return sume
def…
Omi Harjani
- 737
- 1
- 8
- 20
7
votes
2 answers
How to directly use Axes3D from matplotlib in standard plot to avoid flake8 error
When using the typical 3D plot like so:
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.gca(projection='3d')
flake8 reports the expected error:
./tools.py:62:9: F401 'mpl_toolkits.mplot3d.Axes3D'…
dsalaj
- 2,857
- 4
- 34
- 43
7
votes
1 answer
flake8 not reporting on lines that are too long
If I create a file test.py with the following poorly-formatted contents:
import re
long_string = "foooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo"
class Foo():
pass
and run flake8 on the file from the…
elethan
- 16,408
- 8
- 64
- 87
6
votes
2 answers
How to suppress a warning in one line for pylint and Flake8 at the same time
I would like to ignore a specific line in static code analysis.
For Flake8, I'd use the syntax # noqa: F401.
For pylint, I'd use the syntax # pylint: disable=unused-import.
As I am working on a code generation framework, I would like the code to…
jraufeisen
- 3,005
- 7
- 27
- 43
6
votes
2 answers
Can a class attribute shadow a built-in in Python?
If have some code like this:
class Foo():
def open(self, bar):
# Doing some fancy stuff here, i.e. opening "bar"
pass
When I run flake8 with the flake8-builtins plug-in I get the error
A003 class attribute "open" is shadowing a…
SebDieBln
- 3,303
- 1
- 7
- 21
6
votes
1 answer
How to format this code so that flake8 is happy?
This code was created by black:
def test_schema_org_script_from_list():
assert (
schema_org_script_from_list([1, 2])
== '\n'
)
But now…
guettli
- 25,042
- 81
- 346
- 663
6
votes
1 answer
Docstring invalid escape sequence triggered by a display equation in latex
I put a latex math expression in the docstring for a function in Python. It triggers a error "W605 invalid escape sequence" which breaks flake8 checking. How to fix it?
"""
The test function is defined as:
\sin(\pi x)/x
"""
I solved this by using…
susanna
- 1,395
- 3
- 20
- 32
6
votes
1 answer
Does flake8 require any installation of my Python project's dependencies?
Is Flake8 a pure static code analyser or should I run pip install -r requirements.txt first?
Or, is there any use case where Flake8 can use the installed dependencies?
Gabriel Petrovay
- 20,476
- 22
- 97
- 168