Flake8 i003 как исправить - Исправление ошибок и поиск оптимальных решений проблем

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Error / Violation Codes

Flake8 and its plugins assign a code to each message that we refer to as an
:term:`error code` (or :term:`violation`). Most plugins will list their error
codes in their documentation or README.

Flake8 installs pycodestyle, pyflakes, and mccabe by default and
generates its own :term:`error code`s for pyflakes:

Code	Example Message
F401	`module` imported but unused
F402	import `module` from line `N` shadowed by loop variable
F403	‘from `module` import *’ used; unable to detect undefined names
F404	future import(s) `name` after other statements
F405	`name` may be undefined, or defined from star imports: `module`
F406	‘from `module` import *’ only allowed at module level
F407	an undefined `__future__` feature name was imported

F501	invalid `%` format literal
F502	`%` format expected mapping but got sequence
F503	`%` format expected sequence but got mapping
F504	`%` format unused named arguments
F505	`%` format missing named arguments
F506	`%` format mixed positional and named arguments
F507	`%` format mismatch of placeholder and argument count
F508	`%` format with `*` specifier requires a sequence
F509	`%` format with unsupported format character
F521	`.format(...)` invalid format string
F522	`.format(...)` unused named arguments
F523	`.format(...)` unused positional arguments
F524	`.format(...)` missing argument
F525	`.format(...)` mixing automatic and manual numbering
F541	f-string without any placeholders

F601	dictionary key `name` repeated with different values
F602	dictionary key variable `name` repeated with different values
F621	too many expressions in an assignment with star-unpacking
F622	two or more starred expressions in an assignment `(a, b, c = d)`
F631	assertion test is a tuple, which is always `True`
F632	use `==/!=` to compare `str`, `bytes`, and `int` literals
F633	use of `>>` is invalid with `print` function
F634	if test is a tuple, which is always `True`

F701	a `break` statement outside of a `while` or `for` loop
F702	a `continue` statement outside of a `while` or `for` loop
F703	a `continue` statement in a `finally` block in a loop
F704	a `yield` or `yield from` statement outside of a function
F706	a `return` statement outside of a function/method
F707	an `except:` block as not the last exception handler
F721	syntax error in doctest
F722	syntax error in forward annotation
F723	syntax error in type comment

F811	redefinition of unused `name` from line `N`
F821	undefined name `name`
F822	undefined name `name` in `__all__`
F823	local variable `name` … referenced before assignment
F831	duplicate argument `name` in function definition
F841	local variable `name` is assigned to but never used

F901	`raise NotImplemented` should be `raise NotImplementedError`

We also report one extra error: E999. We report E999 when we fail to
compile a file into an Abstract Syntax Tree for the plugins that require it.

mccabe only ever reports one :term:`violation` — C901 based on the
complexity value provided by the user.

Users should also reference pycodestyle’s list of error codes.

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I’m editing a Django settings file that looks similar to the following:

# flake8: noqa
from lucy.settings.base import *
from lucy.settings.staging_production import *

# This ensures that errors from staging are tagged accordingly in Airbrake's console
AIRBRAKE.update(environment='staging')

LOGGING['handlers'].update(console={
    'class': 'logging.StreamHandler'
})

This setting lucy/settings/staging.py, extends two other ones and I’d like to keep the ‘star imports’, so I’d like to ignore error codes E403 and E405 for this file.

However, the only way I see to do that is to add the #noqa: E403, E405 comment to every line that it applies; by writing # flake8: noqa at the top of the file, it ignores all errors.

As far as I can tell from http://flake8.pycqa.org/en/3.1.1/user/ignoring-errors.html, it isn’t possible to do this, or have I overlooked something?

asked Jun 19, 2018 at 0:04

Kurt PeekKurt Peek

49.1k83 gold badges282 silver badges499 bronze badges

Starting with Flake8 3.7.0, you can ignore specific warnings for entire files using the --per-file-ignores option.

Command-line usage:

flake8 --per-file-ignores='project/__init__.py:F401,F403 setup.py:E121'

This can also be specified in a config file:

[flake8]
per-file-ignores =
    __init__.py: F401,F403
    setup.py: E121
    other/*: W9

answered Apr 17, 2019 at 15:07

Eugene YarmashEugene Yarmash

138k39 gold badges318 silver badges372 bronze badges

There is no way of specifying that in the file itself, as far as I’m concerned — but you can ignore these errors when triggering flake:

flake8 --ignore=E403,E405 lucy/settings/staging.py

answered Oct 26, 2018 at 14:37

Javier AriasJavier Arias

2,2192 gold badges14 silver badges26 bronze badges

Источник

I’m editing a Django settings file that looks similar to the following:

# flake8: noqa
from lucy.settings.base import *
from lucy.settings.staging_production import *

# This ensures that errors from staging are tagged accordingly in Airbrake's console
AIRBRAKE.update(environment='staging')

LOGGING['handlers'].update(console={
    'class': 'logging.StreamHandler'
})

This setting lucy/settings/staging.py, extends two other ones and I’d like to keep the ‘star imports’, so I’d like to ignore error codes E403 and E405 for this file.

However, the only way I see to do that is to add the #noqa: E403, E405 comment to every line that it applies; by writing # flake8: noqa at the top of the file, it ignores all errors.

As far as I can tell from http://flake8.pycqa.org/en/3.1.1/user/ignoring-errors.html, it isn’t possible to do this, or have I overlooked something?

asked Jun 19, 2018 at 0:04

Kurt PeekKurt Peek

49.1k83 gold badges282 silver badges499 bronze badges

Starting with Flake8 3.7.0, you can ignore specific warnings for entire files using the --per-file-ignores option.

Command-line usage:

flake8 --per-file-ignores='project/__init__.py:F401,F403 setup.py:E121'

This can also be specified in a config file:

[flake8]
per-file-ignores =
    __init__.py: F401,F403
    setup.py: E121
    other/*: W9

answered Apr 17, 2019 at 15:07

Eugene YarmashEugene Yarmash

138k39 gold badges318 silver badges372 bronze badges

There is no way of specifying that in the file itself, as far as I’m concerned — but you can ignore these errors when triggering flake:

flake8 --ignore=E403,E405 lucy/settings/staging.py

answered Oct 26, 2018 at 14:37

Javier AriasJavier Arias

2,2192 gold badges14 silver badges26 bronze badges

Источник

The Ignoring Errors docs currently list a way of ignoring a particular error for a particular line:

example = lambda: 'example'  # noqa: E731

… and a way of ignoring all errors for an entire file:

# flake8: noqa

from foo import unused
function_that_doesnt_exist()
x = 1+       2

… and a couple of ways, either through config or through command-line options, of disabling a particular error globally across an entire project.

But what if I want to ignore a particular error across the entirety of a single file — for instance, to disable warnings about unused imports in an __init__.py barrel file that just imports a bunch of classes so that code from other packages can import them from it in turn? The docs don’t seem to hint at any syntax for this. Is it possible?

asked Jan 8, 2018 at 16:02

Mark AmeryMark Amery

137k78 gold badges401 silver badges450 bronze badges

As of Flake8 3.7.0 you can do this using the --per-file-ignores option.

Command line example

flake8 --per-file-ignores="project/__init__.py:F401 setup.py:E121"

Or in your config file

per-file-ignores =
    project/__init__.py:F401
    setup.py:E121
    other_project/*:W9

See the documentation here: http://flake8.pycqa.org/en/latest/user/options.html?highlight=per-file-ignores#cmdoption-flake8-per-file-ignores

It is not possible to place a noqa comment for specific codes at the top of a file like you can for individual lines. # flake8: noqa: F401 may at first appear to work, but it’s actually being detected as only # flake8: noqa, which means «ignore all messages in the file».

answered Jan 31, 2019 at 6:15

Ross MacArthurRoss MacArthur

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Before version 3.7.0, ignoring specific errors was only implemented per-line but not per-file.

The feature was discussed in issue #324 and the project chose not to implement. An implementation was proposed in this merge request, which nobody has followed up on.

However, some extensions have emerged to address the problem:

[discontinued] flake8-per-file-ignores lets you ignore specific warning/errors for specific files via an entry in the config.
flake8-putty claims to do the same, but hasn’t been updated for a while.

bagerard

4,7672 gold badges25 silver badges44 bronze badges

answered Jan 8, 2018 at 16:41

ArminiusArminius

2,17818 silver badges21 bronze badges

I implemented a flake8 plugin flake8-in-file-ignores to allow adding «ignore» rules in the file itself (as opposed to the built-in config approach), the plugin uses the following syntax

# flake8-in-file-ignores: noqa: E731,E123

answered Jan 27 at 11:02

bagerardbagerard

4,7672 gold badges25 silver badges44 bronze badges

Update .flake8 file with

ignore = E123,E125,H404,H405,H803 ... any other rools

answered Aug 10, 2022 at 16:55

JeksonJekson

2,6346 gold badges35 silver badges71 bronze badges

Источник

.. —— coding: utf-8 ——

.. image:: https://github.com/gforcada/flake8-isort/actions/workflows/testing.yml/badge.svg?branch=master
:target: https://github.com/gforcada/flake8-isort/actions/workflows/testing.yml

.. image:: https://coveralls.io/repos/gforcada/flake8-isort/badge.svg?branch=master
:target: https://coveralls.io/github/gforcada/flake8-isort?branch=master

Use isort_ to check if the imports on your python files are sorted the way you expect.

Add an .isort.cfg to define how you want your imports sorted and run flake8 as you usually do.

See isort documentation_ for .isort.cfg available options.

Install

Install with pip::

$ pip install flake8-isort

Install with conda::

$ conda install -c conda-forge flake8-isort

Configuration

If using the select option from flake8_ be sure to enable the I category as well, see below for the specific error codes reported by flake8-isort.

See flake8 --help for available flake8-isort options.

Error codes

+————+————————————————————+
| Error code | Description |
+============+===========================================================+
| I001 | isort found an import in the wrong position |
+————+————————————————————+
| I002 | no configuration found (.isort.cfg or [isort] in configs) |
+————+————————————————————+
| I003 | isort expected 1 blank line in imports, found 0 |
+————+————————————————————+
| I004 | isort found an unexpected blank line in imports |
+————+————————————————————+
| I005 | isort found an unexpected missing import |
+————+————————————————————+

Requirements

Python 3.7, 3.8, 3.9, 3.10, 3.11 and pypy3
flake8
isort

Relation to flake8-import-order

As an alternative to this flake8 plugin, there’s flake8-import-order_ that could be worth checking out. In contrast to this plugin that defers all logic to isort, the flake8-import-order comes bundled with it’s own logic.

flake8-import-order comes with a few predefined set of styles meanwhile this plugin can be customized a bit more. But the biggest difference could lie in that flake8-isort actually has the corresponding sorting engine isort that can sort the import orders of your existing python files. Meanwhile flake8-import-order has no such corresponding tool, hence big existing projects who want to adopt either would get a more automized experience choosing flake8-isort.

License

GPL 2.0

.. isort: https://pypi.python.org/pypi/isort
.. isort documentation: https://pycqa.github.io/isort/docs/configuration/options.html
.. flake8-import-order: https://pypi.python.org/pypi/flake8-import-order
.. option from flake8: http://flake8.pycqa.org/en/latest/user/options.html#cmdoption-flake8-select

.. —— coding: utf-8 ——

Changelog

6.0.0 (2022-12-22)

Drop isort 4.x support.
[gforcada]
Add support for flake8 6.0.0.
[gforcada]
Add --isort-no-skip-gitignore option to allow temporarily overriding the set
value of isort’s skip_gitignore option with False. This can cause
flake8-isort to run significantly faster at the cost of making flake8-isort’s
behavior differ slightly from the behavior of isort --check. [gschaffner]

5.0.3 (2022-11-20)

Fix broken add_options method, again. [casperdcl]

5.0.2 (2022-11-19)

Fix broken add_options method [casperdcl]

5.0.1 (2022-11-18)

Improve the config option is added and read back. [gforcada]
Bump plugin version. [gforcada]

5.0.0 (2022-10-08)

Update dependencies. [gforcada]
Revamp GitHub actions. [gforcada]
Drop python 3.6, and add python 3.10. [gforcada]
Use linters and formatters to keep code sane and beautiful. [gforcada]

4.2.0 (2022-08-04)

Fix compatibility with flake8 version 5. [nhymxu]

4.1.2.post0 (2022-07-25)

Release it as a wheel as well. [gforcada]

4.1.2 (2022-07-25)

The package no longer depends on testfixtures.

4.1.1 (2021-10-14)

Release py3 only wheels..

4.1.0 (2021-10-14)

Support flake8 4.x [g-as]
Switch from travis-ci to github actions. [g-as]
Drop python 2.7 support and 3.5 as well [g-as]

4.0.0 (2020-08-11)

Nothing changed yet.

4.0.0a0 (2020-08-07)

support isort >= 5 [bnavigator, pkolbus]

3.0.1 (2020-07-08)

Work around FailedToLoadPlugin exception by requiring isort 4.x. Likewise,
pin the major version of all dependencies, to reduce risk of any future
incompatibilities.
[pkolbus]

3.0.0 (2020-04-15)

Let isort search the configuration, rather than flake8-isort try to find it.
[jnns]

2.9.1 (2020-03-28)

Fix flake8 warning.
[sobolevn]

2.9.0 (2020-03-16)

Add python3.8 support.
[sobolevn]

2.8.0 (2019-12-05)

Look for isort configuration on .flake8 files as well.
[JohnHBrock]
Document how to install flake8-isort on conda.
[marcelotrevisani]
Look for isort configuration on pyproject.toml files as well.
[sanjioh]

2.7.0 (2019-03-19)

Improve the README.
[barbossa]
Fix isort output when pipes are used.
[maerteijn]

2.6.0 (2018-12-01)

Use pytest to run tests.
[gforcada]
New error code I005 isort foundan unexpected missing import.
[charettes]
Add isort_show_traceback option to show verbose multi-line output
from isort, turned off by default
[sobolevn]

2.5 (2018-03-15)

Now requires isort >= 4.3.0.
[jleclanche]

2.4 (2018-02-25)

Fix input handling with flake8’s —stdin-display-name, and simplify it.
[blueyed]
Remove flake8-polyfill dependency. flake8 >= 3.2.1 is required already, and
stdin is not read directly anymore.
[blueyed]

2.3 (2017-12-22)

Fix typo.
[paltman]
Add tox.ini and .editorconfig to config search.
[cas—]
Make this plugin compatible with flake8 hook.
As the hook copies the files out of tree,
flake8-isort never finds the correct configuration.
[jaysonsantos]

2.2.2 (2017-08-19)

Workaround for isort bug when skipping files.
[danpalmer]

2.2.1 (2017-05-12)

Release as universal wheel.
[gforcada]

2.2 (2017-03-26)

Support flake8 git hook.
[sergio-alonso]
Support python 3.6.
[gforcada]
Search configuration on home folder.
[gforcada]

2.1.3 (2016-11-25)

Fix yet another corner case.
[gforcada]

2.1.2 (2016-11-25)

Fix another corner case: ignored files.
[cas—]

2.1.1 (2016-11-25)

Fix corner cases of isort: newlines and grouped imports.
[cas—]

2.1.0 (2016-11-24)

Show the exact line and kind of error,
rather than a generic message.
[cas—]

2.0.3 (2016-11-22)

Update trove classifiers.
[gforcada]

2.0.2 (2016-11-22)

Add flake8 classifier.
[sigmavirus24]
Require flake8 3.2.1.
flake8 series 3.1.x and 3.2.0 where not reporting flake8-isort errors.
[gforcada]
Test on pypy and pypy3.
[gforcada]
Fix tests and formatting.
[gforcada]

2.0.1 (2016-09-22)

Fix standard input processing.
[carljm]

2.0 (2016-09-14)

Refactor code to handle flake8 version 3.
[danpalmer]
Require flake8 version 3.0.
[gforcada]

1.3 (2016-06-20)

Make error messages clearer.
[do3cc]
Use either pep8 or pycodestyle (new name for pep8).
[Maxim Novikov]
Fix coveralls.
[gforcada]

1.2 (2016-03-05)

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

1.1.1 (2016-02-16)

Silence isort messages.
[gforcada]
Improve wording.
[gforcada]

1.1 (2016-02-16)

Check for isort configuration on setup.cfg as well.
[plumdog]

1.0 (2015-12-16)

Check for an isort configuration file.
[gforcada]

0.2 (2015-09-14)

Fix entry point.
[gforcada]

0.1.post0 (2015-09-13)

Release wheels as well.
[gforcada]

0.1 (2015-09-13)

Initial release
[gforcada]
Add all boilerplate files.
[gforcada]
Create the flake8 plugin per se.
[gforcada]

Источник

Error / Violation Codes

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Install

Configuration

Error codes

Requirements

Relation to flake8-import-order

License

Changelog

6.0.0 (2022-12-22)

5.0.3 (2022-11-20)

5.0.2 (2022-11-19)

5.0.1 (2022-11-18)

5.0.0 (2022-10-08)

4.2.0 (2022-08-04)

4.1.2.post0 (2022-07-25)

4.1.2 (2022-07-25)

4.1.1 (2021-10-14)

4.1.0 (2021-10-14)

4.0.0 (2020-08-11)

4.0.0a0 (2020-08-07)

3.0.1 (2020-07-08)

3.0.0 (2020-04-15)

2.9.1 (2020-03-28)

2.9.0 (2020-03-16)

2.8.0 (2019-12-05)

2.7.0 (2019-03-19)

2.6.0 (2018-12-01)

2.5 (2018-03-15)

2.4 (2018-02-25)

2.3 (2017-12-22)

2.2.2 (2017-08-19)

2.2.1 (2017-05-12)

2.2 (2017-03-26)

2.1.3 (2016-11-25)

2.1.2 (2016-11-25)

2.1.1 (2016-11-25)

2.1.0 (2016-11-24)

2.0.3 (2016-11-22)

2.0.2 (2016-11-22)

2.0.1 (2016-09-22)

2.0 (2016-09-14)

1.3 (2016-06-20)

1.2 (2016-03-05)

1.1.1 (2016-02-16)

1.1 (2016-02-16)

1.0 (2015-12-16)

0.2 (2015-09-14)

0.1.post0 (2015-09-13)

0.1 (2015-09-13)

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