Getting invalid syntax error when using Pylint but code runs fine

Question

When I do pylint main.py, I get the following error:

E: 7, 0: invalid syntax (<string>, line 7) (syntax-error)

# main.py

import os

repo = os.environ.get('GITHUB_REPOSITORY')
branch = os.environ.get('GITHUB_REF')
commit = os.environ.get('GITHUB_SHA')

commit_url = f'https://github.com/{repo}/commit/{commit}'
repo_url = f'https://github.com/{repo}/tree/{branch}'

print(commit_url, repo_url)

The code is running as expected but pylint is giving this strange error. I am using Python 3.6.9 on Ubuntu 18.04.

Your pylint thinks your python version is different than the one you are using. — juanpa.arrivillaga
– juanpa.arrivillaga, Commented Jul 19, 2020 at 9:47

rbanffy · Accepted Answer · 2020-07-20 11:51:06Z

3

It looks like PyLint isn't happy with your f-strings (introduced in 3.6) and is validating against the syntax of an older Python version. I'd check whether the PyLint you are using is running from the same Python environment your Python you are running the program with. I would guess it's running from your system Python, while your program is running from a virtual environment.

With pylint 2.5.3 and Python 3.8.2 the only complaint PyLint makes is about the lack of a module docstring.

************* Module main
main.py:1:0: C0114: Missing module docstring (missing-module-docstring)

-----------------------------------
Your code has been rated at 8.57/10

edited Jul 20, 2020 at 11:51

answered Jul 19, 2020 at 16:32

rbanffy

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Vignesh · Accepted Answer · 2020-07-19 09:45:16Z

0

Use .format method like below

import os

repo = os.environ.get('GITHUB_REPOSITORY')
branch = os.environ.get('GITHUB_REF')
commit = os.environ.get('GITHUB_SHA')

commit_url = 'https://github.com/{}/commit/{}'.format(repo, commit)
repo_url = 'https://github.com/{}/tree/{}'.format(repo, branch)

print(commit_url, repo_url)

Check here, Python 3 returns "invalid syntax" when trying to perform string interpolation

answered Jul 19, 2020 at 9:45

Vignesh

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1 Comment

juanpa.arrivillaga Over a year ago

They aren't getting an actual syntax error, rather, the linter is reporting an error that is incorrect. Also, if you are going to link to another answer, then you should vote to close as a duplicate, not write an answer that is just the same as the linked answer

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