https://github.com/ebeweber/flake8-mutable

flake8 extension for mutable default arguments
https://github.com/ebeweber/flake8-mutable

Last synced: 2 days ago
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flake8 extension for mutable default arguments

• Host: GitHub
• URL: https://github.com/ebeweber/flake8-mutable
• Owner: ebeweber
• License: mit
• Created: 2016-05-11T05:31:39.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2020-06-29T15:16:55.000Z (over 4 years ago)
• Last Synced: 2024-09-27T04:29:02.631Z (about 1 month ago)
• Language: Python
• Homepage: https://pypi.python.org/pypi/flake8-mutable
• Size: 12.7 KB
• Stars: 44
• Watchers: 4
• Forks: 16
• Open Issues: 14
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
flake8-mutable

--------------

[![PyPI version](https://img.shields.io/pypi/v/flake8-mutable.svg)](https://pypi.python.org/pypi/flake8-mutable)

#### Motivation

Python's default arguments are evaluated at definition as opposed to when the function is invoked. This leads to unexpected behavior, as mutations persist between calls. For a more detailed explanation, see [The Hitchhiker's Guide to Python](http://docs.python-guide.org/en/latest/writing/gotchas/#mutable-default-arguments).

#### Example

```

def fnc(a, b={}):

    pass

foo.py:2:14: M511 - mutable default arg of type Dict

```

#### Installation

```

pip install flake8-mutable

```

#### Changes

##### [1.1.0] 2016-11-26

- Callables

##### [1.0.6] 2016-11-26

- added MANIFEST.in

#### License

[MIT](https://opensource.org/licenses/MIT)