Ruff

902 rules ruff@0.16.8

Complete effective rule inventory.

Docs

ASYNC210
Async functions should not call blocking HTTP methods

No autofix
ASYNC212
Blocking httpx method {name}.{call}() in async context, use httpx.AsyncClient

No autofix
ASYNC220
Async functions should not create subprocesses with blocking methods

No autofix
ASYNC221
Async functions should not run processes with blocking methods

No autofix
ASYNC222
Async functions should not wait on processes with blocking methods

No autofix
ASYNC230
Async functions should not open files with blocking methods like open

No autofix
ASYNC240
Async functions should not perform blocking {path_library} operations

No autofix
ASYNC250
Blocking call to input() in async context

No autofix
ASYNC251
Async functions should not call time.sleep

No autofix
B002
Python does not support the unary prefix increment operator (++)

No autofix
B003
Assigning to os.environ doesn't clear the environment

No autofix
B004
Using hasattr(x, "__call__") to test if x is callable is unreliable. Use callable(x) for consistent results.

Some reports are autofixable
B005
Using .strip() with multi-character strings is misleading

No autofix
B006
Do not use mutable data structures for argument defaults

Some reports are autofixable
B007
Loop control variable {name} not used within loop body

Some reports are autofixable
B008
Do not perform function call {name} in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable

No autofix
B009
Do not call getattr with a constant attribute value. It is not any safer than normal property access.

Always autofixable
B010
Do not call setattr with a constant attribute value. It is not any safer than normal property access.

Always autofixable
B011
Do not assert False (python -O removes these calls), raise AssertionError()

Always autofixable
B012
{name} inside finally blocks cause exceptions to be silenced

No autofix
B013
A length-one tuple literal is redundant in exception handlers

Always autofixable
B014
Exception handler with duplicate exception: {name}

Always autofixable
B015
Pointless comparison. Did you mean to assign a value? Otherwise, prepend assert or remove it.

No autofix
B016
Cannot raise a literal. Did you intend to return it or raise an Exception?

No autofix
B017
Do not assert blind exception: {exception}

No autofix
B018
Found useless expression. Either assign it to a variable or remove it.

No autofix
B019
Use of functools.lru_cache or functools.cache on methods can lead to memory leaks

No autofix
B020
Loop control variable {name} overrides iterable it iterates

No autofix
B021
f-string used as docstring. Python will interpret this as a joined string, rather than a docstring.

No autofix
B022
No arguments passed to contextlib.suppress. No exceptions will be suppressed and therefore this context manager is redundant

No autofix
B023
Function definition does not bind loop variable {name}

No autofix
B024
{name} is an abstract base class, but it has no abstract methods or properties

No autofix
B025
try-except* block with duplicate exception {name}

No autofix
B026
Star-arg unpacking after a keyword argument is strongly discouraged

No autofix
B027
{name} is an empty method in an abstract base class, but has no abstract decorator

No autofix
B028
No explicit stacklevel keyword argument found

Always autofixable
B029
Using except* (): with an empty tuple does not catch anything; add exceptions to handle

No autofix
B030
except* handlers should only be exception classes or tuples of exception classes

No autofix
B031
Using the generator returned from itertools.groupby() more than once will do nothing on the second usage

No autofix
B032
Possible unintentional type annotation (using :). Did you mean to assign (using =)?

No autofix

Rules