C0321
Error prone
Error
More than one statement on a single line
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C1801
Error prone
Error
Use len() without explicit argument
E0102
Error prone
Error
Detect functions that already exist
E0103
Error prone
Error
break or continue used outside a loop
E0104
Error prone
Error
Return outside function
E0105
Error prone
Error
The yield keyword is used outside a function
E0107
Error prone
Error
Use of operator that does not exist
E0110
Error prone
Error
Abstract class instantiation attempt
E0111
Error prone
Error
Bad argument passed to reversed()
E0117
Error prone
Error
A nonlocal variable does not have an attached name somewhere in the parent scopes.
E0237
Error prone
Error
Assigning an attribute not defined in the class slots
E0239
Error prone
Error
Detect class that inherit non-classes
E0242
Error prone
Error
Value conflict with __slots__
E0301
Error prone
Error
__iter__ returns non-iterator
E0302
Error prone
Error
The special method __int__ should have 0 parameter
E0603
Error prone
Error
Undefined variable name referenced in __all\__
E0604
Error prone
Error
Invalid object referenced in __all__
E0633
Error prone
Error
Attempting to unpack a non-sequence
E0704
Error prone
Error
The raise statement is not inside an except clause
E0710
Error prone
Error
Raising a new style class which doesn't inherit from BaseException
E0711
Error prone
Error
NotImplemented raised and should raise NotImplementedError instead
E1003
Error prone
Error
Another argument than the current class is given as first argument of the super builtin
E1102
Error prone
Critical
Object is not callable
E1121
Error prone
Critical
Too many arguments for method call
E1123
Error prone
Critical
Unexpected keyword argument in method call
E1124
Error prone
Critical
Argument passed by position and keyword in method call
E1125
Error prone
Error
Missing mandatory keyword argument in function call
E1126
Error prone
Error
Sequence type is indexed with an invalid type
E1129
Error prone
Error
Context manager doesn't implement __enter__ and __exit__
E1130
Error prone
Error
Unary operand is used on an object which does not support this type of operation.
E1132
Error prone
Error
Got multiple values for keyword argument in function call
E1133
Error prone
Critical
Non-iterable value used in an iterating context
E1134
Error prone
Error
Non-mapping value is used in a mapping context
E1135
Error prone
Critical
Value doesn't support membership test
E1136
Error prone
Error
Value is unsubscriptable
E1139
Error prone
Error
Invalid metaclass used
E1141
Error prone
Critical
Invalid iteration over dictionary items
E1205
Error prone
Critical
Too many arguments for logging format string
E1206
Error prone
Critical
Not enough arguments in logging call
E1305
Error prone
Warning
Too many arguments for format string
E1306
Error prone
Critical
Not enough arguments for format string
E1307
Error prone
Error
Incorrect format string
E1310
Error prone
Error
The argument to a str.{l,r,}strip call contains a duplicate character
I1101
Error prone
Warning
Variable is accessed for non-existent member of C extension
R0123
Error prone
Error
Invalid literal comparison
R1707
Error prone
Error
Misplacing comma that creates a tuple
W0101
Error prone
Critical
Unreachable code
W0104
Error prone
Error
Statement have no effect
W0109
Error prone
Critical
Duplicate key in dictionary
W0124
Error prone
Error
With statement returns multiple values
W0126
Error prone
Error
Conditional statement with potentially wrong function or method call due to missing parentheses
W0129
Error prone
Warning
Assert statement has a string literal as its first argument and the assert will never fail.
W0143
Error prone
Warning
Comparing against a callable (parenthesis needed)
W0602
Error prone
Warning
Global variable used but not assigned
W0614
Error prone
Warning
Unused import from another module
W0632
Error prone
Error
Possible unbalanced tuple unpacking with sequence
W0641
Error prone
Warning
Variable defined but not used
W1116
Error prone
Error
Argument of isinstance is not a type
W1302
Error prone
Error
Invalid format string
W1303
Error prone
Error
Missing format() argument key
W1305
Error prone
Warning
Invalid combined format specification
W1403
Error prone
Error
Implicit string concatenation found in list
W0238
Error prone
Warning
Unused private member
C1803
Error prone
Warning
Make use of implicit boolean
R1727
Error prone
Error
Boolean value has always the same value
W1310
Error prone
Informational
String that does not have any interpolation variables, in which case it can be either a normal string without formatting or a bug in the code.
W1514
Error prone
Warning
Using open without explicitly specifying an encoding
R1730
Error prone
Warning
Use the min builtin instead of using an if condition
W0199
Error prone
Warning
Assert called on a 2-item-tuple.
C3001
Error prone
Warning
Lambda expression assigned to a variable. Define a function using the "def" keyword instead.
R0022
Error prone
Warning
Useless option value.
W0012
Error prone
Warning
Unknown option value.
W0245
Error prone
Critical
Super call without brackets.
C2403
Error prone
Warning
Import a module with non-ASCII characters
E1143
Error prone
Error
Member is unhashable