flake8-pep3101 2.0.0

Checks for old string formatting.

Flake8 PEP 3101 plugin

Python has three string formatting options:

• the old percent operator

• the .format() string method

• f-strings (only since python 3.6+)

Although f-strings are more ergonomic, there a certain scenarios where the .format() method is still the only viable option.

See pyformat website for examples of the percent operator vs the format() method.

For a more format definition see the PEP 3101.

This plugin is based on a python checker that was in plone.recipe.codeanalysis.

Install

Install with pip:

$ pip install flake8-pep3101

Requirements

• Python 3.7, 3.8, 3.9, 3.10 and pypy3

• flake8

Extras

If you want to check whether your new style formatting are correctly defined, check flake8-string-format plugin.

License

GPL 2.0

Changelog

2.0.0 (2022-10-08)

• Update dependencies. [gforcada]

• Test the code on GitHub actions. [gforcada]

• Drop python 2.7 and only support python 3.7+. [gforcada]

• Use linters and formatters to keep code sane and beautiful. [gforcada]

• Simplify the amount of code to write a test. [gforcada]

1.3.0 (2019-12-15)

• Warn about “string %i” % 33 which was previously ignored. Reported by @unformatt. [gforcada]

1.2.1 (2018-04-05)

• Fix text on the error message. [icemac]

1.2 (2017-12-12)

• Handle when there are numbers in either side of the modulo operator. [gforcada]

1.1 (2017-05-12)

• Handle variable formatting (i.e. my_string_variable % ('one', 'two', )). [gforcada]

• Test againsta Python 3.6. [gforcada]

• Release universal wheels as well. [gforcada]

1.0 (2016-11-27)

• Remove tox and use plain travis matrix to test. [gforcada]

• Test on python 2.7, python 3.5, pypy and pypy3. [gforcada]

• Require flake8 3.0. [gforcada]

• Use ast to analyze the code. The regular expression used so far was mostly a hit or miss, with each corner case making it even more difficult to read. The new checker with ast is simple, elegant and so much easy to read. [gforcada]

0.6 (2016-10-29)

• Handle edge case when a single or double quoted string has another pair of quotes inside (‘lala “lu” la’) with some % symbol inside as well. [gforcada]

0.5 (2016-10-26)

• Add all possible string formatters. [gforcada]

• Fix extension to work with flake8 > 3.0. [gforcada]

• Fix crash when the % symbol was the last character of a line. [gforcada]

0.4 (2016-07-03)

• Rename pep8 to pycodestyle. [alefteris]

• Add support for python 3.5. [alefteris]

• Add flake8 pypi classifier. [alefteris]

• Drop python 3.3 and 3.4 support (only testing it probably works just fine). [gforcada]

• Fix travis and coveralls to work properly with python 3.5. [gforcada]

0.3 (2016-03-05)

• Allow stdin processing, this way text editor can pass input to flake8. [mjacksonw]

0.2 (2015-09-16)

• 0.1 was a brown bag release. [gforcada]

0.1 (2015-09-16)

• Initial release [gforcada]

• Create the flake8 plugin per se. [gforcada]