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isort your imports, so you don't have to.
isort is a Python utility / library to sort imports alphabetically and automatically separate into sections and by type. It provides a command line utility, Python library and plugins for various editors to quickly sort all your imports. It requires Python 3.8+ to run but supports formatting Python 2 code too.
Before isort:
from my_lib import Object import os from my_lib import Object3 from my_lib import Object2 import sys from third_party import lib15, lib1, lib2, lib3, lib4, lib5, lib6, lib7, lib8, lib9, lib10, lib11, lib12, lib13, lib14 import sys from __future__ import absolute_import from third_party import lib3 print("Hey") print("yo")
After isort:
from __future__ import absolute_import import os import sys from third_party import (lib1, lib2, lib3, lib4, lib5, lib6, lib7, lib8, lib9, lib10, lib11, lib12, lib13, lib14, lib15) from my_lib import Object, Object2, Object3 print("Hey") print("yo")
Installing isort is as simple as:
pip install isort
From the command line:
To run on specific files:
isort mypythonfile.py mypythonfile2.py
To apply recursively:
isort .
If globstar is enabled, isort .
is equivalent to:
isort **/*.py
To view proposed changes without applying them:
isort mypythonfile.py --diff
Finally, to atomically run isort against a project, only applying changes if they don't introduce syntax errors:
isort --atomic .
(Note: this is disabled by default, as it prevents isort from running against code written using a different version of Python.)
From within Python:
import isort isort.file("pythonfile.py")
or:
import isort sorted_code = isort.code("import b\nimport a\n")
Several plugins have been written that enable to use isort from within a variety of text-editors. You can find a full list of them on the isort wiki. Additionally, I will enthusiastically accept pull requests that include plugins for other text editors and add documentation for them as I am notified.
You will notice above the "multi_line_output" setting. This setting defines how from imports wrap when they extend past the line_length limit and has 12 possible settings.
To change the how constant indents appear - simply change the indent property with the following accepted formats:
For example:
" "
is equivalent to 4.
For the import styles that use parentheses, you can control whether or not to include a trailing comma after the last import with the include_trailing_comma
option (defaults to False
).
As of isort 3.1.0 support for balanced multi-line imports has been added. With this enabled isort will dynamically change the import length to the one that produces the most balanced grid, while staying below the maximum import length defined.
Example:
from __future__ import (absolute_import, division, print_function, unicode_literals)
Will be produced instead of:
from __future__ import (absolute_import, division, print_function, unicode_literals)
To enable this set balanced_wrapping
to True
in your config or pass the -e
option into the command line utility.
isort provides configuration options to change almost every aspect of how imports are organized, ordered, or grouped together in sections.
Click here for an overview of all these options.
To make isort ignore a single import simply add a comment at the end of the import line containing the text isort:skip
:
import module # isort:skip
or:
from xyz import (abc, # isort:skip yo, hey)
To make isort skip an entire file simply add isort:skip_file
to the module's doc string:
""" my_module.py Best module ever isort:skip_file """ import b import a
isort can be ran or configured to add / remove imports automatically.
--check-only
optionisort can also be used to verify that code is correctly formatted by running it with -c
. Any files that contain incorrectly sorted and/or formatted imports will be outputted to stderr
.
isort **/*.py -c -v SUCCESS: /home/timothy/Projects/Open_Source/isort/isort_kate_plugin.py Everything Looks Good! ERROR: /home/timothy/Projects/Open_Source/isort/isort/isort.py Imports are incorrectly sorted.
One great place this can be used is with a pre-commit git hook, such as this one by @acdha:
https://gist.github.com/acdha/8717683
This can help to ensure a certain level of code quality throughout a project.
isort provides a hook function that can be integrated into your Git pre-commit script to check Python code before committing.
Upon installation, isort enables a setuptools
command that checks Python files declared by your project.
Place this badge at the top of your repository to let others know your project uses isort.
For README.md:
[![Imports: isort](https://img.shields.io/badge/%20imports-isort-%231674b1?style=flat&labelColor=ef8336)](https://pycqa.github.io/isort/)
Or README.rst:
.. image:: https://img.shields.io/badge/%20imports-isort-%231674b1?style=flat&labelColor=ef8336 :target: https://pycqa.github.io/isort/
To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.
isort simply stands for import sort. It was originally called “sortImports” however I got tired of typing the extra characters and came to the realization camelCase is not pythonic.
I wrote isort because in an organization I used to work in the manager came in one day and decided all code must have alphabetically sorted imports. The code base was huge - and he meant for us to do it by hand. However, being a programmer - I'm too lazy to spend 8 hours mindlessly performing a function, but not too lazy to spend 16 hours automating it. I was given permission to open source sortImports and here we are :)
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Thanks and I hope you find isort useful!
~Timothy Crosley