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Flake8 plugin to encourage correct string literal concatenation
pip install flake8-implicit-str-concat
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Requires Python
>=3.9
Dependencies
flake8-implicit-str-concat
This is a plugin for the Python code-checking tool Flake8 to encourage correct string literal concatenation.
It looks for style problems like implicitly concatenated string literals on the same line (which can be introduced by the code-formatting tool Black), or unnecessary plus operators for explicit string literal concatenation.
Install
pip install flake8-implicit-str-concat
Example
$ cat example.py
s = ('111111111111111111111'
'222222222222222222222')
$ black example.py
reformatted example.py
All done! ✨ 🍰 ✨
1 file reformatted.
$ cat example.py
s = "111111111111111111111" "222222222222222222222"
$ flake8 example.py
example.py:1:28: ISC001 implicitly concatenated string literals on one line
$ edit example.py # Remove the " " and save
$ cat example.py
s = "111111111111111111111222222222222222222222"
$ black example.py
All done! ✨ 🍰 ✨
1 file left unchanged.
$ flake8 example.py
$
Violation codes
The plugin uses the prefix ISC
, short for Implicit String Concatenation.
Code | Description |
---|---|
ISC001 | implicitly concatenated string literals on one line |
ISC002 | implicitly concatenated string literals over continuation line |
ISC003 | explicitly concatenated string should be implicitly concatenated |
Release Notes
You can find the release notes on the releases page.