C0321
Error prone
High
More than one statement on a single line
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C1801
Error prone
High
Use len() without explicit argument
E0102
Error prone
High
Detect functions that already exist
E0103
Error prone
High
break or continue used outside a loop
E0104
Error prone
High
Return outside function
E0105
Error prone
High
The yield keyword is used outside a function
E0107
Error prone
High
Use of operator that does not exist
E0110
Error prone
High
Abstract class instantiation attempt
E0111
Error prone
High
Bad argument passed to reversed()
E0117
Error prone
High
A nonlocal variable does not have an attached name somewhere in the parent scopes.
E0237
Error prone
High
Assigning an attribute not defined in the class slots
E0239
Error prone
High
Detect class that inherit non-classes
E0242
Error prone
High
Value conflict with __slots__
E0301
Error prone
High
__iter__ returns non-iterator
E0302
Error prone
High
The special method __int__ should have 0 parameter
E0603
Error prone
High
Undefined variable name referenced in __all\__
E0604
Error prone
High
Invalid object referenced in __all__
E0633
Error prone
High
Attempting to unpack a non-sequence
E0704
Error prone
High
The raise statement is not inside an except clause
E0710
Error prone
High
Raising a new style class which doesn't inherit from BaseException
E0711
Error prone
High
NotImplemented raised and should raise NotImplementedError instead
E1003
Error prone
High
Another argument than the current class is given as first argument of the super builtin
E1125
Error prone
High
Missing mandatory keyword argument in function call
E1126
Error prone
High
Sequence type is indexed with an invalid type
E1129
Error prone
High
Context manager doesn't implement __enter__ and __exit__
E1130
Error prone
High
Unary operand is used on an object which does not support this type of operation.
E1132
Error prone
High
Got multiple values for keyword argument in function call
E1134
Error prone
High
Non-mapping value is used in a mapping context
E1136
Error prone
High
Value is unsubscriptable
E1139
Error prone
High
Invalid metaclass used
E1307
Error prone
High
Incorrect format string
E1310
Error prone
High
The argument to a str.{l,r,}strip call contains a duplicate character
R0123
Error prone
High
Invalid literal comparison
R1707
Error prone
High
Misplacing comma that creates a tuple
W0104
Error prone
High
Statement have no effect
W0124
Error prone
High
With statement returns multiple values
W0126
Error prone
High
Conditional statement with potentially wrong function or method call due to missing parentheses
W0632
Error prone
High
Possible unbalanced tuple unpacking with sequence
W1116
Error prone
High
Argument of isinstance is not a type
W1302
Error prone
High
Invalid format string
W1303
Error prone
High
Missing format() argument key
W1403
Error prone
High
Implicit string concatenation found in list
R1727
Error prone
High
Boolean value has always the same value
E1131
Error prone
High
Emitted when a binary arithmetic operation between two operands is not supported.