Flake8 and Pylint Codes and Messages

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  • DevynCJohnson
    DevynCJohnson
    Keymaster
    • Topics - 444
    • @devyncjohnson

    mccabe

    • C901 x is too complex (#)

    flake8_docstrings

    (plugin wrapper to use pep257)

    • D100 Public module missing
    • D101 Public class missing
    • D102 Public method missing
    • D103 Public function missing
    • D200 One-line docstrings should fit on one line with quotes
    • D201 No blank lines allowed before docstring
    • D202 No blank lines allowed after docstring
    • D203 1 blank required before class docstring
    • D204 1 blank required after class docstring
    • D205 Blank line required between one-line summary and description
    • D206 Docstring should be indented with spaces, not tabs
    • D207 Docstring under-indented
    • D208 Docstring over-indented
    • D209 Put multi-line docstring closing quotes on separate line
    • D300 Use """triple double quotes"""
    • D301 Use r""" if any backslashes in your docstring
    • D302 Use u""" for Unicode docstrings (Python 2 only)
    • D400 First line should end with a period
    • D401 First line should be in imperative mood
    • D402 First line should not be the function's "signature"

    pep8 (errors)

    • E101 indentation has spaces & tabs
    • E111 indentation is not a multiple of four
    • E112 expected an indented block
    • E113 unexpected indentation
    • E114 indentation is not a multiple of four (comment)
    • E115 expected an indented block (comment)
    • E116 unexpected indentation (comment)
    • E121 continuation line under-indented for hanging indent
    • E122 continuation line missing indentation or outdented
    • E123 closing bracket does not match indentation of opening bracket's line
    • E124 closing bracket does not match visual indentation
    • E125 continuation line with same indent as next logical line
    • E126 continuation line over-indented for hanging indent
    • E127 continuation line over-indented for visual indent
    • E128 continuation line under-indented for visual indent
    • E129 visually indented line with same indent as next logical line
    • E131 continuation line unaligned for hanging indent
    • E133 closing bracket is missing indentation
    • E201 whitespace after '('
    • E202 whitespace before ')'
    • E203 whitespace before ':'
    • E211 whitespace before '('
    • E221 multiple spaces before operator
    • E222 multiple spaces after operator
    • E223 tab before operator
    • E224 tab after operator
    • E225 operator missing whitespace
    • E226 arithmetic operator missing whitespace
    • E227 bitwise or shift operator missing whitespace
    • E228 modulo missing whitespace
    • E231 missing whitespace after ','
    • E241 multiple spaces after ','
    • E242 tab after ','
    • E251 unexpected spaces around keyword / parameter equals
    • E261 at least two spaces before inline comment
    • E262 inline comment should start with '# '
    • E265 block comment should start with '# '
    • E266 too many leading '#' for block comment
    • E271 multiple spaces after keyword
    • E272 multiple spaces before keyword
    • E273 tab after keyword
    • E274 tab before keyword
    • E301 expected 1 blank line, found 0
    • E302 expected 2 blank lines, found 0
    • E303 too many blank lines (3)
    • E304 blank lines found after function decorator
    • E401 multiple imports on one line
    • E501 line too long (82 > 79 characters)
    • E502 backslash is redundant between brackets
    • E701 multiple statements on one line (colon)
    • E702 multiple statements on one line (semicolon)
    • E703 statement ends with a semicolon
    • E704 multiple statements on one line (def)
    • E711 comparison to None; should be 'if cond is None:'
    • E712 comparison to True; should be 'if cond is True:' or 'if cond:'
    • E713 test for membership; should be 'not in'
    • E714 test for object identity; should be 'is not'
    • E721 do not compare types, use 'isinstance()'
    • E731 do not assign a lambda expression, use a def
    • E901 SyntaxError or IndentationError
    • E902 IOError

    pyflakes

    • 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
    • F811 redefinition of unused name from line N
    • F812 list comprehension redefines 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

    flake8-import-order

    • I100 Your import statements are in the wrong order
    • I101 The names in your from import are in the wrong order
    • I201 Missing newline between sections or imports

    pep8-naming

    • N801 class names should use CapWords convention
    • N802 function name should be lowercase
    • N803 argument name should be lowercase
    • N804 first argument of a classmethod should be named 'cls'
    • N805 first argument of a method should be named 'self'
    • N806 variable in function should be lowercase
    • N811 constant imported as non constant
    • N812 lowercase imported as non lowercase
    • N813 camelcase imported as lowercase
    • N814 camelcase imported as constant

    pep8 (warnings)

    • W191 indentation contains tabs
    • W291 trailing whitespace
    • W292 no newline at end of file
    • W293 blank line contains whitespace
    • W391 blank line at end of file
    • W601 .has_key() is deprecated, use 'in'
    • W602 deprecated form of raising exception
    • W603 '<>' is deprecated, use '!='
    • W604 backticks are deprecated, use 'repr()'

    pylint

    C

    • C0102 Black listed name "%s"
    • C0103 Invalid %s name "%s"
    • C0111 Missing %s docstring
    • C0112 Empty %s docstring
    • C0121 Missing required attribute "%s"
    • C0202 Class method %s should have cls as first argument
    • C0203 Metaclass method %s should have mcs as first argument
    • C0204 Metaclass class method %s should have %s as first argument
    • C0301 Line too long (%s/%s)
    • C0302 Too many lines in module (%s)
    • C0303 Trailing whitespace
    • C0304 Final newline missing
    • C0321 More than one statement on a single line
    • C0322 Old: Operator not preceded by a space
    • C0323 Old: Operator not followed by a space
    • C0324 Old: Comma not followed by a space
    • C0325 Unnecessary parens after %r keyword
    • C0326 %s space %s %s %s\n%s
    • C1001 Old-style class defined

    E

    • E0001 (syntax error raised for a module; message varies)
    • E0011 Unrecognized file option %r
    • E0012 Bad option value %r
    • E0100 __init__ method is a generator
    • E0101 Explicit return in __init__
    • E0102 %s already defined line %s
    • E0103 %r not properly in loop
    • E0104 Return outside function
    • E0105 Yield outside function
    • E0106 Return with argument inside generator
    • E0107 Use of the non-existent %s operator
    • E0108 Duplicate argument name %s in function definition
    • E0202 An attribute affected in %s line %s hide this method
    • E0203 Access to member %r before its definition line %s
    • E0211 Method has no argument
    • E0213 Method should have "self" as first argument
    • E0221 Interface resolved to %s is not a class
    • E0222 Missing method %r from %s interface
    • E0235 __exit__ must accept 3 arguments: type, value, traceback
    • E0501 Old: Non ascii characters found but no encoding specified (PEP 263)
    • E0502 Old: Wrong encoding specified (%s)
    • E0503 Old: Unknown encoding specified (%s)
    • E0601 Using variable %r before assignment
    • E0602 Undefined variable %r
    • E0603 Undefined variable name %r in __all__
    • E0604 Invalid object %r in __all__, must contain only strings
    • E0611 No name %r in module %r
    • E0701 Bad except clauses order (%s)
    • E0702 Raising %s while only classes, instances or string are allowed
    • E0710 Raising a new style class which does not inherit from BaseException
    • E0711 NotImplemented raised - should raise NotImplementedError
    • E0712 Catching an exception which does not inherit from BaseException: %s
    • E1001 Use of __slots__ on an old style class
    • E1002 Use of super on an old style class
    • E1003 Bad first argument %r given to super()
    • E1004 Missing argument to super()
    • E1101 %s %r has no %r member
    • E1102 %s is not callable
    • E1103 %s %r has no %r member (but some types could not be inferred)
    • E1111 Assigning to function call which does not return
    • E1120 No value passed for parameter %s in function call
    • E1121 Too many positional arguments for function call
    • E1122 Old: Duplicate keyword argument %r in function call
    • E1123 Passing unexpected keyword argument %r in function call
    • E1124 Parameter %r passed as both positional and keyword argument
    • E1125 Old: Missing mandatory keyword argument %r
    • E1200 Unsupported logging format character %r (%#02x) at index %d
    • E1201 Logging format string ends in middle of conversion specifier
    • E1205 Too many arguments for logging format string
    • E1206 Not enough arguments for logging format string
    • E1300 Unsupported format character %r (%#02x) at index %d
    • E1301 Format string ends in middle of conversion specifier
    • E1302 Mixing named and unnamed conversion specifiers in format string
    • E1303 Expected mapping for format string, not %s
    • E1304 Missing key %r in format string dictionary
    • E1305 Too many arguments for format string
    • E1306 Not enough arguments for format string
    • E1310 Suspicious argument in %s.%s call

    F

    • F0001 (error prevented analysis; message varies)
    • F0002 %s: %s (message varies)
    • F0003 ignored builtin module %s
    • F0004 unexpected inferred value %s
    • F0010 error while code parsing: %s
    • F0202 Unable to check methods signature (%s / %s)
    • F0220 failed to resolve interfaces implemented by %s (%s)
    • F0321 Old: Format detection error in %r
    • F0401 Unable to import %s

    I

    • I0001 Unable to run raw checkers on built-in module %s
    • I0010 Unable to consider inline option %r
    • I0011 Locally disabling %s
    • I0012 Locally enabling %s
    • I0013 Ignoring entire file
    • I0014 Used deprecated directive "pylint:disable-all" or "pylint:disable=all"
    • I0020 Suppressed %s (from line %d)
    • I0021 Useless suppression of %s
    • I0022 Deprecated pragma "pylint:disable-msg" or "pylint:enable-msg"

    R

    • R0201 Method could be a function
    • R0401 Cyclic import (%s)
    • R0801 Similar lines in %s files
    • R0901 Too many ancestors (%s/%s)
    • R0902 Too many instance attributes (%s/%s)
    • R0903 Too few public methods (%s/%s)
    • R0904 Too many public methods (%s/%s)
    • R0911 Too many return statements (%s/%s)
    • R0912 Too many branches (%s/%s)
    • R0913 Too many arguments (%s/%s)
    • R0914 Too many local variables (%s/%s)
    • R0915 Too many statements (%s/%s)
    • R0921 Abstract class not referenced
    • R0922 Abstract class is only referenced %s times
    • R0923 Interface not implemented

    RP

    • RP0001 Messages by category
    • RP0002 % errors / warnings by module
    • RP0003 Messages
    • RP0004 Global evaluation
    • RP0101 Statistics by type
    • RP0401 External dependencies
    • RP0402 Modules dependencies graph
    • RP0701 Raw metrics
    • RP0801 Duplication

    W

    • W0101 Unreachable code
    • W0102 Dangerous default value %s as argument
    • W0104 Statement seems to have no effect
    • W0105 String statement has no effect
    • W0106 Expression "%s" is assigned to nothing
    • W0107 Unnecessary pass statement
    • W0108 Lambda may not be necessary
    • W0109 Duplicate key %r in dictionary
    • W0110 map/filter on lambda could be replaced by comprehension
    • W0120 Else clause on loop without a break statement
    • W0121 Use raise ErrorClass(args) instead of raise ErrorClass, args.
    • W0122 Use of exec
    • W0141 Used builtin function %r
    • W0142 Used * or ** magic
    • W0150 %s statement in finally block may swallow exception
    • W0199 Assert called on a tuple. Did you mean \'assert x,y\'?
    • W0201 Attribute %r defined outside __init__
    • W0211 Static method with %r as first argument
    • W0212 Access to a protected member %s of a client class
    • W0221 Arguments number differs from %s method
    • W0222 Signature differs from %s method
    • W0223 Method %r is abstract in class %r but is not overridden
    • W0231 __init__ method from base class %r is not called
    • W0232 Class has no __init__ method
    • W0233 __init__ method from a non direct base class %r is called
    • W0234 iter returns non-iterator
    • W0301 Unnecessary semicolon
    • W0311 Bad indentation. Found %s %s, expected %s
    • W0312 Found indentation with %ss instead of %ss
    • W0331 Use of the <> operator
    • W0332 Use of "l" as long integer identifier
    • W0333 Use of the `` operator
    • W0401 Wildcard import %s
    • W0402 Uses of a deprecated module %r
    • W0403 Relative import %r, should be %r
    • W0404 Reimport %r (imported line %s)
    • W0406 Module import itself
    • W0410 __future__ import is not the first non docstring statement
    • W0511 (warning notes in code comments; message varies)
    • W0512 Cannot decode using encoding "%s", unexpected byte at position %d
    • W0601 Global variable %r undefined at the module level
    • W0602 Using global for %r but no assignment is done
    • W0603 Using the global statement
    • W0604 Using the global statement at the module level
    • W0611 Unused import %s
    • W0612 Unused variable %r
    • W0613 Unused argument %r
    • W0614 Unused import %s from wildcard import
    • W0621 Redefining name %r from outer scope (line %s)
    • W0622 Redefining built-in %r
    • W0623 Redefining name %r from %s in exception handler
    • W0631 Using possibly undefined loop variable %r
    • W0632 Possible unbalanced tuple unpacking with sequence%s: …
    • W0633 Attempting to unpack a non-sequence%s
    • W0701 Raising a string exception
    • W0702 No exception type(s) specified
    • W0703 Catching too general exception %s
    • W0704 Except does not do anything
    • W0710 Exception does not inherit from standard "Exception" class
    • W0711 Exception to catch is the result of a binary "%s" operation
    • W0712 Implicit unpacking of exceptions is not supported in Python 3
    • W1001 Use of "property" on an old style class
    • W1111 Assigning to function call which only returns None
    • W1201 Specify string format arguments as logging function parameters
    • W1300 Format string dictionary key should be a string, not %s
    • W1301 Unused key %r in format string dictionary
    • W1401 Anomalous backslash in string: \'%s\'. String constant might be missing an r prefix
    • W1402 Anomalous Unicode escape in byte string: \'%s\'. String constant might be missing an r or u prefix
    • W1501 "%s" is not a valid mode for open

    Further Reading

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