Ruff

902 rules ruff@0.16.8

Complete effective rule inventory.

Docs

F541
f-string without any placeholders

Always autofixable
F601
Dictionary key literal {name} repeated

Some reports are autofixable
F602
Dictionary key {name} repeated

Some reports are autofixable
F621
Too many expressions in star-unpacking assignment

No autofix
F622
Two starred expressions in assignment

No autofix
F631
Assert test is a non-empty tuple, which is always True

No autofix
F632
Use == to compare constant literals

Always autofixable
F633
Use of >> is invalid with print function

No autofix
F634
If test is a tuple, which is always True

No autofix
F701
break outside loop

No autofix
F702
continue not properly in loop

No autofix
F704
{keyword} statement outside of a function

No autofix
F706
return statement outside of a function/method

No autofix
F707
An except block as not the last exception handler

No autofix
F722
Syntax error in forward annotation: {parse_error}

No autofix
F811
Redefinition of unused {name} from {row}

Some reports are autofixable
F821
Undefined name {name}. {tip}

No autofix
F822
Undefined name {name} in __all__

No autofix
F823
Local variable {name} referenced before assignment

No autofix
F841
Local variable {name} is assigned to but never used

Some reports are autofixable
F842
Local variable {name} is annotated but never used

No autofix
F901
raise NotImplemented should be raise NotImplementedError

Some reports are autofixable
FA100
Add from __future__ import annotations to simplify {name}

Always autofixable
FA102
Missing from __future__ import annotations, but uses {reason}

Always autofixable
FAST001
FastAPI route with redundant response_model argument

Always autofixable
FAST002
FastAPI dependency without Annotated

Some reports are autofixable
FAST003
Parameter {arg_name} appears in route path, but not in {function_name} signature

Some reports are autofixable
FBT001
Boolean-typed positional argument in function definition

No autofix
FBT002
Boolean default positional argument in function definition

No autofix
FBT003
Boolean positional value in function call

No autofix
FIX001
Line contains FIXME, consider resolving the issue

No autofix
FIX003
Line contains XXX, consider resolving the issue

No autofix
FIX004
Line contains HACK, consider resolving the issue

No autofix
FLY002
Consider {expression} instead of string join

Always autofixable
FURB101
Path.open() followed by read() can be replaced by {filename}.{suggestion}

Some reports are autofixable
FURB103
Path.open() followed by write() can be replaced by {filename}.{suggestion}

Some reports are autofixable
FURB105
Unnecessary empty string passed to print

Always autofixable
FURB110
Replace ternary if expression with or operator

Always autofixable
FURB113
Use {suggestion} instead of repeatedly calling {name}.append()

Some reports are autofixable
FURB116
Replace {function_name} call with {display}

Some reports are autofixable

Rules