Pylint is a Python source code analyzer looking for bugs and signs of poor quality.
Pylint is a Python tool that checks if a module satisfies a coding standard.
Questions tagged [pylint]
1691 questions
77
votes
7 answers
Finding dead code in large python project
I've seen How can you find unused functions in Python code? but that's really old, and doesn't really answer my question.
I have a large python project with multiple libraries that are shared by multiple entry point scripts. This project has been…
Brian Postow
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76
votes
4 answers
Why doesn't Pylint like built-in functions?
I have a line like this:
filter(lambda x: x == 1, [1, 1, 2])
Pylint is showing a warning:
W: 3: Used builtin function 'filter'
Why is that? is a list comprehension the recommended method?
Of course I can rewrite this like this:
[x for x in [1, 1,…
igorgue
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74
votes
1 answer
How to handle the pylint message: Warning: Method could be a function
I have a python class and ran pylint against it. One message it gave was:
Warning: Method could be a function
Is this telling me that it would be better to move this method out of the class because it doesn't use any instance variables?
In C# I…
bignum
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73
votes
4 answers
Best practice for setting the default value of a parameter that's supposed to be a list in Python?
I have a Python function that takes a list as a parameter. If I set the parameter's default value to an empty list like this:
def func(items=[]):
print items
Pylint would tell me "Dangerous default value [] as argument". So I was wondering what…
Jack Z
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69
votes
6 answers
Should wildcard import be avoided?
I'm using PyQt and am running into this issue. If my import statements are:
from PyQt4.QtCore import *
from PyQt4.QtGui import *
then pylint gives hundreds of "Unused import" warnings. I'm hesitant to just turn them off, because there might be…
Colin
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66
votes
9 answers
Ignore by directory using Pylint
The following is from the Pylint documentation:
--ignore=
Add to the black list. It should be a
base name, not a path. You may set this option multiple
times. [current: %default]
Yet, I'm not having luck…
Ciantic
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65
votes
14 answers
Pylint can't find SQLAlchemy query member
I have a Flask (v0.10.1) application using Flask-SQLAlchemy (v2.0) and I'm trying to configure Pylint to check it. Running with Python 3.4.2.
First error was:
Instance of 'SQLAlchemy' has no 'Table' member (no-member)
And I fixed this one ignoring…
Pedro Teixeira
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63
votes
4 answers
Pylint: overriding max-line-length in individual file
Is it possible to change max-line-length settings for one file out of a project (while performing all other checks defined in rc file on it)?
Ideally, it should behave like inline pylint: disable=x comments.
I've tried putting this line at the…
Łukasz Rogalski
- 22,092
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60
votes
3 answers
Pylint showing invalid variable name in output
I made a simple python script to post data on a website.
#Imports
url_to_short = sys.argv[1]
post_url = 'https://www.googleapis.com/urlshortener/v1/url'
headers = {'Content-Type': 'application/json'}
data = {'longUrl': url_to_short}
post_data =…
RanRag
- 48,359
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57
votes
4 answers
"No name in module" error from Pylint
I have a file named main.py with the following code:
#!/usr/bin/env python3
import utils.stuff
if __name__ == "__main__":
print("hi from main.py")
utils.stuff.foo()
In the directory with main.py, I have a subdirectory named utils which…
Elias Zamaria
- 96,623
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56
votes
4 answers
pylint 1.4 reports E1101(no-member) on all C extensions
We've been long-time fans of pylint. Its static analysis has become a critical part of all our python projects and has saved tons of time chasing obscure bugs. But after upgrading from 1.3 -> 1.4, almost all compiled c extensions result in…
user590028
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53
votes
2 answers
Python - Should I put my helper functions inside or outside the class?
In Python, if some methods of a class need a helper function, but the helper function itself doesn't use anything in the class, should I put the helper function inside or outside the class?
I tried putting it inside but PyLint was complaining that…
Jack Z
- 2,572
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49
votes
3 answers
How do I automatically fix lint issues reported by pylint?
Just like we have "eslint --fix" to automatically fix lint problems in Javascript code, do we have something for pylint too for Python code?
ThinkGeek
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49
votes
2 answers
Pylint to show only warnings and errors
I would like to use pylint to check my code but I am only interested in error and warning levels. Is there a way to do that in command line or in pylintrc?
I am not interested in filtering given issues (like listing all messages in MESSAGE CONTROL),…
joetde
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49
votes
1 answer
pylint duplicate code false positive
I have this code in (many) of my Python files for a project.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
from pprint import pformat
Pylint…
Sardathrion - against SE abuse
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