pylint_messages.txt

:blacklisted-name (C0102): *Black listed name "%s"*
  Used when the name is listed in the black list (unauthorized names).
:invalid-name (C0103): *Invalid %s name "%s"%s*
  Used when the name doesn't match the regular expression associated to its type
  (constant, variable, class...).
:missing-docstring (C0111): *Missing %s docstring*
  Used when a module, function, class or method has no docstring.Some special
  methods like __init__ doesn't necessary require a docstring.
:empty-docstring (C0112): *Empty %s docstring*
  Used when a module, function, class or method has an empty docstring (it would
  be too easy ;).
:unneeded-not (C0113): *Consider changing "%s" to "%s"*
  Used when a boolean expression contains an unneeded negation.
:singleton-comparison (C0121): *Comparison to %s should be %s*
  Used when an expression is compared to singleton values like True, False or
  None.
:misplaced-comparison-constant (C0122): *Comparison should be %s*
  Used when the constant is placed on the left sideof a comparison. It is
  usually clearer in intent to place it in the right hand side of the
  comparison.
:unidiomatic-typecheck (C0123): *Using type() instead of isinstance() for a typecheck.*
  The idiomatic way to perform an explicit typecheck in Python is to use
  isinstance(x, Y) rather than type(x) == Y, type(x) is Y. Though there are
  unusual situations where these give different results.
:consider-using-enumerate (C0200): *Consider using enumerate instead of iterating with range and len*
  Emitted when code that iterates with range and len is encountered. Such code
  can be simplified by using the enumerate builtin.
:bad-classmethod-argument (C0202): *Class method %s should have %s as first argument*
  Used when a class method has a first argument named differently than the value
  specified in valid-classmethod-first-arg option (default to "cls"),
  recommended to easily differentiate them from regular instance methods.
:bad-mcs-method-argument (C0203): *Metaclass method %s should have %s as first argument*
  Used when a metaclass method has a first agument named differently than the
  value specified in valid-classmethod-first-arg option (default to "cls"),
  recommended to easily differentiate them from regular instance methods.
:bad-mcs-classmethod-argument (C0204): *Metaclass class method %s should have %s as first argument*
  Used when a metaclass class method has a first argument named differently than
  the value specified in valid-metaclass-classmethod-first-arg option (default
  to "mcs"), recommended to easily differentiate them from regular instance
  methods.
:line-too-long (C0301): *Line too long (%s/%s)*
  Used when a line is longer than a given number of characters.
:too-many-lines (C0302): *Too many lines in module (%s/%s)*
  Used when a module has too much lines, reducing its readability.
:trailing-whitespace (C0303): *Trailing whitespace*
  Used when there is whitespace between the end of a line and the newline.
:missing-final-newline (C0304): *Final newline missing*
  Used when the last line in a file is missing a newline.
:multiple-statements (C0321): *More than one statement on a single line*
  Used when more than on statement are found on the same line.
:superfluous-parens (C0325): *Unnecessary parens after %r keyword*
  Used when a single item in parentheses follows an if, for, or other keyword.
:bad-whitespace (C0326): *%s space %s %s %s*
  Used when a wrong number of spaces is used around an operator, bracket or
  block opener.
:mixed-line-endings (C0327): *Mixed line endings LF and CRLF*
  Used when there are mixed (LF and CRLF) newline signs in a file.
:unexpected-line-ending-format (C0328): *Unexpected line ending format. There is '%s' while it should be '%s'.*
  Used when there is different newline than expected.
:bad-continuation (C0330): *Wrong %s indentation%s%s.*
  TODO
:wrong-spelling-in-comment (C0401): *Wrong spelling of a word '%s' in a comment:*
  Used when a word in comment is not spelled correctly.
:wrong-spelling-in-docstring (C0402): *Wrong spelling of a word '%s' in a docstring:*
  Used when a word in docstring is not spelled correctly.
:invalid-characters-in-docstring (C0403): *Invalid characters %r in a docstring*
  Used when a word in docstring cannot be checked by enchant.
:multiple-imports (C0410): *Multiple imports on one line (%s)*
  Used when import statement importing multiple modules is detected.
:wrong-import-order (C0411): *%s comes before %s*
  Used when PEP8 import order is not respected (standard imports first, then
  third-party libraries, then local imports)
:ungrouped-imports (C0412): *Imports from package %s are not grouped*
  Used when imports are not grouped by packages
:wrong-import-position (C0413): *Import "%s" should be placed at the top of the module*
  Used when code and imports are mixed
:syntax-error (E0001):
  Used when a syntax error is raised for a module.
:unrecognized-inline-option (E0011): *Unrecognized file option %r*
  Used when an unknown inline option is encountered.
:bad-option-value (E0012): *Bad option value %r*
  Used when a bad value for an inline option is encountered.
:init-is-generator (E0100): *__init__ method is a generator*
  Used when the special class method __init__ is turned into a generator by a
  yield in its body.
:return-in-init (E0101): *Explicit return in __init__*
  Used when the special class method __init__ has an explicit return value.
:function-redefined (E0102): *%s already defined line %s*
  Used when a function / class / method is redefined.
:not-in-loop (E0103): *%r not properly in loop*
  Used when break or continue keywords are used outside a loop.
:return-outside-function (E0104): *Return outside function*
  Used when a "return" statement is found outside a function or method.
:yield-outside-function (E0105): *Yield outside function*
  Used when a "yield" statement is found outside a function or method.
:nonexistent-operator (E0107): *Use of the non-existent %s operator*
  Used when you attempt to use the C-style pre-increment orpre-decrement
  operator -- and ++, which doesn't exist in Python.
:duplicate-argument-name (E0108): *Duplicate argument name %s in function definition*
  Duplicate argument names in function definitions are syntax errors.
:abstract-class-instantiated (E0110): *Abstract class %r with abstract methods instantiated*
  Used when an abstract class with `abc.ABCMeta` as metaclass has abstract
  methods and is instantiated.
:bad-reversed-sequence (E0111): *The first reversed() argument is not a sequence*
  Used when the first argument to reversed() builtin isn't a sequence (does not
  implement __reversed__, nor __getitem__ and __len__
:too-many-star-expressions (E0112): *More than one starred expression in assignment*
  Emitted when there are more than one starred expressions (`*x`) in an
  assignment. This is a SyntaxError. This message can't be emitted when using
  Python < 3.0.
:invalid-star-assignment-target (E0113): *Starred assignment target must be in a list or tuple*
  Emitted when a star expression is used as a starred assignment target. This
  message can't be emitted when using Python < 3.0.
:star-needs-assignment-target (E0114): *Can use starred expression only in assignment target*
  Emitted when a star expression is not used in an assignment target. This
  message can't be emitted when using Python < 3.0.
:nonlocal-and-global (E0115): *Name %r is nonlocal and global*
  Emitted when a name is both nonlocal and global. This message can't be emitted
  when using Python < 3.0.
:continue-in-finally (E0116): *'continue' not supported inside 'finally' clause*
  Emitted when the `continue` keyword is found inside a finally clause, which is
  a SyntaxError.
:nonlocal-without-binding (E0117): *nonlocal name %s found without binding*
  Emitted when a nonlocal variable does not have an attached name somewhere in
  the parent scopes This message can't be emitted when using Python < 3.0.
:method-hidden (E0202): *An attribute defined in %s line %s hides this method*
  Used when a class defines a method which is hidden by an instance attribute
  from an ancestor class or set by some client code.
:access-member-before-definition (E0203): *Access to member %r before its definition line %s*
  Used when an instance member is accessed before it's actually assigned.
:no-method-argument (E0211): *Method has no argument*
  Used when a method which should have the bound instance as first argument has
  no argument defined.
:no-self-argument (E0213): *Method should have "self" as first argument*
  Used when a method has an attribute different the "self" as first argument.
  This is considered as an error since this is a so common convention that you
  shouldn't break it!
:invalid-slots-object (E0236): *Invalid object %r in __slots__, must contain only non empty strings*
  Used when an invalid (non-string) object occurs in __slots__.
:assigning-non-slot (E0237): *Assigning to attribute %r not defined in class slots*
  Used when assigning to an attribute not defined in the class slots.
:invalid-slots (E0238): *Invalid __slots__ object*
  Used when an invalid __slots__ is found in class. Only a string, an iterable
  or a sequence is permitted.
:inherit-non-class (E0239): *Inheriting %r, which is not a class.*
  Used when a class inherits from something which is not a class.
:inconsistent-mro (E0240): *Inconsistent method resolution order for class %r*
  Used when a class has an inconsistent method resolutin order.
:duplicate-bases (E0241): *Duplicate bases for class %r*
  Used when a class has duplicate bases.
:non-iterator-returned (E0301): *__iter__ returns non-iterator*
  Used when an __iter__ method returns something which is not an iterable (i.e.
  has no `__next__` method)
:unexpected-special-method-signature (E0302): *The special method %r expects %s param(s), %d %s given*
  Emitted when a special method was defined with an invalid number of
  parameters. If it has too few or too many, it might not work at all.
:import-error (E0401): *Unable to import %s*
  Used when pylint has been unable to import a module.
:used-before-assignment (E0601): *Using variable %r before assignment*
  Used when a local variable is accessed before it's assignment.
:undefined-variable (E0602): *Undefined variable %r*
  Used when an undefined variable is accessed.
:undefined-all-variable (E0603): *Undefined variable name %r in __all__*
  Used when an undefined variable name is referenced in __all__.
:invalid-all-object (E0604): *Invalid object %r in __all__, must contain only strings*
  Used when an invalid (non-string) object occurs in __all__.
:no-name-in-module (E0611): *No name %r in module %r*
  Used when a name cannot be found in a module.
:unbalanced-tuple-unpacking (E0632): *Possible unbalanced tuple unpacking with sequence%s: left side has %d label(s), right side has %d value(s)*
  Used when there is an unbalanced tuple unpacking in assignment
:unpacking-non-sequence (E0633): *Attempting to unpack a non-sequence%s*
  Used when something which is not a sequence is used in an unpack assignment
:bad-except-order (E0701): *Bad except clauses order (%s)*
  Used when except clauses are not in the correct order (from the more specific
  to the more generic). If you don't fix the order, some exceptions may not be
  catched by the most specific handler.
:raising-bad-type (E0702): *Raising %s while only classes or instances are allowed*
  Used when something which is neither a class, an instance or a string is
  raised (i.e. a `TypeError` will be raised).
:bad-exception-context (E0703): *Exception context set to something which is not an exception, nor None*
  Used when using the syntax "raise ... from ...", where the exception context
  is not an exception, nor None. This message can't be emitted when using Python
  < 3.0.
:misplaced-bare-raise (E0704): *The raise statement is not inside an except clause*
  Used when a bare raise is not used inside an except clause. This generates an
  error, since there are no active exceptions to be reraised. An exception to
  this rule is represented by a bare raise inside a finally clause, which might
  work, as long as an exception is raised inside the try block, but it is
  nevertheless a code smell that must not be relied upon.
:raising-non-exception (E0710): *Raising a new style class which doesn't inherit from BaseException*
  Used when a new style class which doesn't inherit from BaseException is
  raised.
:notimplemented-raised (E0711): *NotImplemented raised - should raise NotImplementedError*
  Used when NotImplemented is raised instead of NotImplementedError
:catching-non-exception (E0712): *Catching an exception which doesn't inherit from BaseException: %s*
  Used when a class which doesn't inherit from BaseException is used as an
  exception in an except clause.
:bad-super-call (E1003): *Bad first argument %r given to super()*
  Used when another argument than the current class is given as first argument
  of the super builtin.
:no-member (E1101): *%s %r has no %r member*
  Used when a variable is accessed for an unexistent member.
:not-callable (E1102): *%s is not callable*
  Used when an object being called has been inferred to a non callable object
:assignment-from-no-return (E1111): *Assigning to function call which doesn't return*
  Used when an assignment is done on a function call but the inferred function
  doesn't return anything.
:no-value-for-parameter (E1120): *No value for argument %s in %s call*
  Used when a function call passes too few arguments.
:too-many-function-args (E1121): *Too many positional arguments for %s call*
  Used when a function call passes too many positional arguments.
:unexpected-keyword-arg (E1123): *Unexpected keyword argument %r in %s call*
  Used when a function call passes a keyword argument that doesn't correspond to
  one of the function's parameter names.
:redundant-keyword-arg (E1124): *Argument %r passed by position and keyword in %s call*
  Used when a function call would result in assigning multiple values to a
  function parameter, one value from a positional argument and one from a
  keyword argument.
:missing-kwoa (E1125): *Missing mandatory keyword argument %r in %s call*
  Used when a function call does not pass a mandatory keyword-only argument.
  This message can't be emitted when using Python < 3.0.
:invalid-sequence-index (E1126): *Sequence index is not an int, slice, or instance with __index__*
  Used when a sequence type is indexed with an invalid type. Valid types are
  ints, slices, and objects with an __index__ method.
:invalid-slice-index (E1127): *Slice index is not an int, None, or instance with __index__*
  Used when a slice index is not an integer, None, or an object with an
  __index__ method.
:assignment-from-none (E1128): *Assigning to function call which only returns None*
  Used when an assignment is done on a function call but the inferred function
  returns nothing but None.
:not-context-manager (E1129): *Context manager '%s' doesn't implement __enter__ and __exit__.*
  Used when an instance in a with statement doesn't implement the context
  manager protocol(__enter__/__exit__).
:invalid-unary-operand-type (E1130):
  Emitted when an unary operand is used on an object which does not support this
  type of operation
:unsupported-binary-operation (E1131):
  Emitted when a binary arithmetic operation between two operands is not
  supported.
:repeated-keyword (E1132): *Got multiple values for keyword argument %r in function call*
  Emitted when a function call got multiple values for a keyword.
:not-an-iterable (E1133): *Non-iterable value %s is used in an iterating context*
  Used when a non-iterable value is used in place whereiterable is expected
:not-a-mapping (E1134): *Non-mapping value %s is used in a mapping context*
  Used when a non-mapping value is used in place wheremapping is expected
:unsupported-membership-test (E1135): *Value '%s' doesn't support membership test*
  Emitted when an instance in membership test expression doesn'timplement
  membership protocol (__contains__/__iter__/__getitem__)
:unsubscriptable-object (E1136): *Value '%s' is unsubscriptable*
  Emitted when a subscripted value doesn't support subscription(i.e. doesn't
  define __getitem__ method)
:logging-unsupported-format (E1200): *Unsupported logging format character %r (%#02x) at index %d*
  Used when an unsupported format character is used in a logging statement
  format string.
:logging-format-truncated (E1201): *Logging format string ends in middle of conversion specifier*
  Used when a logging statement format string terminates before the end of a
  conversion specifier.
:logging-too-many-args (E1205): *Too many arguments for logging format string*
  Used when a logging format string is given too few arguments.
:logging-too-few-args (E1206): *Not enough arguments for logging format string*
  Used when a logging format string is given too many arguments
:bad-format-character (E1300): *Unsupported format character %r (%#02x) at index %d*
  Used when a unsupported format character is used in a format string.
:truncated-format-string (E1301): *Format string ends in middle of conversion specifier*
  Used when a format string terminates before the end of a conversion specifier.
:mixed-format-string (E1302): *Mixing named and unnamed conversion specifiers in format string*
  Used when a format string contains both named (e.g. '%(foo)d') and unnamed
  (e.g. '%d') conversion specifiers. This is also used when a named conversion
  specifier contains * for the minimum field width and/or precision.
:format-needs-mapping (E1303): *Expected mapping for format string, not %s*
  Used when a format string that uses named conversion specifiers is used with
  an argument that is not a mapping.
:missing-format-string-key (E1304): *Missing key %r in format string dictionary*
  Used when a format string that uses named conversion specifiers is used with a
  dictionary that doesn't contain all the keys required by the format string.
:too-many-format-args (E1305): *Too many arguments for format string*
  Used when a format string that uses unnamed conversion specifiers is given too
  many arguments.
:too-few-format-args (E1306): *Not enough arguments for format string*
  Used when a format string that uses unnamed conversion specifiers is given too
  few arguments
:bad-str-strip-call (E1310): *Suspicious argument in %s.%s call*
  The argument to a str.{l,r,}strip call contains a duplicate character,
:yield-inside-async-function (E1700): *Yield inside async function*
  Used when an `yield` or `yield from` statement is found inside an async
  function. This message can't be emitted when using Python < 3.5.
:not-async-context-manager (E1701): *Async context manager '%s' doesn't implement __aenter__ and __aexit__.*
  Used when an async context manager is used with an object that does not
  implement the async context management protocol. This message can't be emitted
  when using Python < 3.5.
:fatal (F0001):
  Used when an error occurred preventing the analysis of a module (unable to
  find it for instance).
:astroid-error (F0002): *%s: %s*
  Used when an unexpected error occurred while building the Astroid
  representation. This is usually accompanied by a traceback. Please report such
  errors !
:parse-error (F0010): *error while code parsing: %s*
  Used when an exception occured while building the Astroid representation which
  could be handled by astroid.
:method-check-failed (F0202): *Unable to check methods signature (%s / %s)*
  Used when Pylint has been unable to check methods signature compatibility for
  an unexpected reason. Please report this kind if you don't make sense of it.
:raw-checker-failed (I0001): *Unable to run raw checkers on built-in module %s*
  Used to inform that a built-in module has not been checked using the raw
  checkers.
:bad-inline-option (I0010): *Unable to consider inline option %r*
  Used when an inline option is either badly formatted or can't be used inside
  modules.
:locally-disabled (I0011): *Locally disabling %s (%s)*
  Used when an inline option disables a message or a messages category.
:locally-enabled (I0012): *Locally enabling %s (%s)*
  Used when an inline option enables a message or a messages category.
:file-ignored (I0013): *Ignoring entire file*
  Used to inform that the file will not be checked
:suppressed-message (I0020): *Suppressed %s (from line %d)*
  A message was triggered on a line, but suppressed explicitly by a disable=
  comment in the file. This message is not generated for messages that are
  ignored due to configuration settings.
:useless-suppression (I0021): *Useless suppression of %s*
  Reported when a message is explicitly disabled for a line or a block of code,
  but never triggered.
:deprecated-pragma (I0022): *Pragma "%s" is deprecated, use "%s" instead*
  Some inline pylint options have been renamed or reworked, only the most recent
  form should be used. NOTE:skip-all is only available with pylint >= 0.26
:too-many-nested-blocks (R0101): *Too many nested blocks (%s/%s)*
  Used when a function or a method has too many nested blocks. This makes the
  code less understandable and maintainable.
:simplifiable-if-statement (R0102): *The if statement can be reduced by %s*
  Used when an if statement can be reduced to a boolean conversion of the
  statement's test.
:no-self-use (R0201): *Method could be a function*
  Used when a method doesn't use its bound instance, and so could be written as
  a function.
:no-classmethod-decorator (R0202): *Consider using a decorator instead of calling classmethod*
  Used when a class method is defined without using the decorator syntax.
:no-staticmethod-decorator (R0203): *Consider using a decorator instead of calling staticmethod*
  Used when a static method is defined without using the decorator syntax.
:redefined-variable-type (R0204): *Redefinition of %s type from %s to %s*
  Used when the type of a variable changes inside a method or a function.
:cyclic-import (R0401): *Cyclic import (%s)*
  Used when a cyclic import between two or more modules is detected.
:duplicate-code (R0801): *Similar lines in %s files*
  Indicates that a set of similar lines has been detected among multiple file.
  This usually means that the code should be refactored to avoid this
  duplication.
:too-many-ancestors (R0901): *Too many ancestors (%s/%s)*
  Used when class has too many parent classes, try to reduce this to get a
  simpler (and so easier to use) class.
:too-many-instance-attributes (R0902): *Too many instance attributes (%s/%s)*
  Used when class has too many instance attributes, try to reduce this to get a
  simpler (and so easier to use) class.
:too-few-public-methods (R0903): *Too few public methods (%s/%s)*
  Used when class has too few public methods, so be sure it's really worth it.
:too-many-public-methods (R0904): *Too many public methods (%s/%s)*
  Used when class has too many public methods, try to reduce this to get a
  simpler (and so easier to use) class.
:too-many-return-statements (R0911): *Too many return statements (%s/%s)*
  Used when a function or method has too many return statement, making it hard
  to follow.
:too-many-branches (R0912): *Too many branches (%s/%s)*
  Used when a function or method has too many branches, making it hard to
  follow.
:too-many-arguments (R0913): *Too many arguments (%s/%s)*
  Used when a function or method takes too many arguments.
:too-many-locals (R0914): *Too many local variables (%s/%s)*
  Used when a function or method has too many local variables.
:too-many-statements (R0915): *Too many statements (%s/%s)*
  Used when a function or method has too many statements. You should then split
  it in smaller functions / methods.
:too-many-boolean-expressions (R0916): *Too many boolean expressions in if statement (%s/%s)*
  Used when a if statement contains too many boolean expressions
:unreachable (W0101): *Unreachable code*
  Used when there is some code behind a "return" or "raise" statement, which
  will never be accessed.
:dangerous-default-value (W0102): *Dangerous default value %s as argument*
  Used when a mutable value as list or dictionary is detected in a default value
  for an argument.
:pointless-statement (W0104): *Statement seems to have no effect*
  Used when a statement doesn't have (or at least seems to) any effect.
:pointless-string-statement (W0105): *String statement has no effect*
  Used when a string is used as a statement (which of course has no effect).
  This is a particular case of W0104 with its own message so you can easily
  disable it if you're using those strings as documentation, instead of
  comments.
:expression-not-assigned (W0106): *Expression "%s" is assigned to nothing*
  Used when an expression that is not a function call is assigned to nothing.
  Probably something else was intended.
:unnecessary-pass (W0107): *Unnecessary pass statement*
  Used when a "pass" statement that can be avoided is encountered.
:unnecessary-lambda (W0108): *Lambda may not be necessary*
  Used when the body of a lambda expression is a function call on the same
  argument list as the lambda itself; such lambda expressions are in all but a
  few cases replaceable with the function being called in the body of the
  lambda.
:duplicate-key (W0109): *Duplicate key %r in dictionary*
  Used when a dictionary expression binds the same key multiple times.
:useless-else-on-loop (W0120): *Else clause on loop without a break statement*
  Loops should only have an else clause if they can exit early with a break
  statement, otherwise the statements under else should be on the same scope as
  the loop itself.
:exec-used (W0122): *Use of exec*
  Used when you use the "exec" statement (function for Python 3), to discourage
  its usage. That doesn't mean you can not use it !
:eval-used (W0123): *Use of eval*
  Used when you use the "eval" function, to discourage its usage. Consider using
  `ast.literal_eval` for safely evaluating strings containing Python expressions
  from untrusted sources.
:confusing-with-statement (W0124): *Following "as" with another context manager looks like a tuple.*
  Emitted when a `with` statement component returns multiple values and uses
  name binding with `as` only for a part of those values, as in with ctx() as a,
  b. This can be misleading, since it's not clear if the context manager returns
  a tuple or if the node without a name binding is another context manager.
:using-constant-test (W0125): *Using a conditional statement with a constant value*
  Emitted when a conditional statement (If or ternary if) uses a constant value
  for its test. This might not be what the user intended to do.
:bad-builtin (W0141): *Used builtin function %s*
  Used when a black listed builtin function is used (see the bad-function
  option). Usual black listed functions are the ones like map, or filter , where
  Python offers now some cleaner alternative like list comprehension.
:lost-exception (W0150): *%s statement in finally block may swallow exception*
  Used when a break or a return statement is found inside the finally clause of
  a try...finally block: the exceptions raised in the try clause will be
  silently swallowed instead of being re-raised.
:assert-on-tuple (W0199): *Assert called on a 2-uple. Did you mean 'assert x,y'?*
  A call of assert on a tuple will always evaluate to true if the tuple is not
  empty, and will always evaluate to false if it is.
:attribute-defined-outside-init (W0201): *Attribute %r defined outside __init__*
  Used when an instance attribute is defined outside the __init__ method.
:bad-staticmethod-argument (W0211): *Static method with %r as first argument*
  Used when a static method has "self" or a value specified in valid-
  classmethod-first-arg option or valid-metaclass-classmethod-first-arg option
  as first argument.
:protected-access (W0212): *Access to a protected member %s of a client class*
  Used when a protected member (i.e. class member with a name beginning with an
  underscore) is access outside the class or a descendant of the class where
  it's defined.
:arguments-differ (W0221): *Arguments number differs from %s %r method*
  Used when a method has a different number of arguments than in the implemented
  interface or in an overridden method.
:signature-differs (W0222): *Signature differs from %s %r method*
  Used when a method signature is different than in the implemented interface or
  in an overridden method.
:abstract-method (W0223): *Method %r is abstract in class %r but is not overridden*
  Used when an abstract method (i.e. raise NotImplementedError) is not
  overridden in concrete class.
:super-init-not-called (W0231): *__init__ method from base class %r is not called*
  Used when an ancestor class method has an __init__ method which is not called
  by a derived class.
:no-init (W0232): *Class has no __init__ method*
  Used when a class has no __init__ method, neither its parent classes.
:non-parent-init-called (W0233): *__init__ method from a non direct base class %r is called*
  Used when an __init__ method is called on a class which is not in the direct
  ancestors for the analysed class.
:unnecessary-semicolon (W0301): *Unnecessary semicolon*
  Used when a statement is ended by a semi-colon (";"), which isn't necessary
  (that's python, not C ;).
:bad-indentation (W0311): *Bad indentation. Found %s %s, expected %s*
  Used when an unexpected number of indentation's tabulations or spaces has been
  found.
:mixed-indentation (W0312): *Found indentation with %ss instead of %ss*
  Used when there are some mixed tabs and spaces in a module.
:wildcard-import (W0401): *Wildcard import %s*
  Used when `from module import *` is detected.
:deprecated-module (W0402): *Uses of a deprecated module %r*
  Used a module marked as deprecated is imported.
:reimported (W0404): *Reimport %r (imported line %s)*
  Used when a module is reimported multiple times.
:import-self (W0406): *Module import itself*
  Used when a module is importing itself.
:misplaced-future (W0410): *__future__ import is not the first non docstring statement*
  Python 2.5 and greater require __future__ import to be the first non docstring
  statement in the module.
:fixme (W0511):
  Used when a warning note as FIXME or XXX is detected.
:global-variable-undefined (W0601): *Global variable %r undefined at the module level*
  Used when a variable is defined through the "global" statement but the
  variable is not defined in the module scope.
:global-variable-not-assigned (W0602): *Using global for %r but no assignment is done*
  Used when a variable is defined through the "global" statement but no
  assignment to this variable is done.
:global-statement (W0603): *Using the global statement*
  Used when you use the "global" statement to update a global variable. Pylint
  just try to discourage this usage. That doesn't mean you can not use it !
:global-at-module-level (W0604): *Using the global statement at the module level*
  Used when you use the "global" statement at the module level since it has no
  effect
:unused-import (W0611): *Unused %s*
  Used when an imported module or variable is not used.
:unused-variable (W0612): *Unused variable %r*
  Used when a variable is defined but not used.
:unused-argument (W0613): *Unused argument %r*
  Used when a function or method argument is not used.
:unused-wildcard-import (W0614): *Unused import %s from wildcard import*
  Used when an imported module or variable is not used from a `'from X import
  *'` style import.
:redefined-outer-name (W0621): *Redefining name %r from outer scope (line %s)*
  Used when a variable's name hide a name defined in the outer scope.
:redefined-builtin (W0622): *Redefining built-in %r*
  Used when a variable or function override a built-in.
:redefine-in-handler (W0623): *Redefining name %r from %s in exception handler*
  Used when an exception handler assigns the exception to an existing name
:undefined-loop-variable (W0631): *Using possibly undefined loop variable %r*
  Used when an loop variable (i.e. defined by a for loop or a list comprehension
  or a generator expression) is used outside the loop.
:cell-var-from-loop (W0640): *Cell variable %s defined in loop*
  A variable used in a closure is defined in a loop. This will result in all
  closures using the same value for the closed-over variable.
:bare-except (W0702): *No exception type(s) specified*
  Used when an except clause doesn't specify exceptions type to catch.
:broad-except (W0703): *Catching too general exception %s*
  Used when an except catches a too general exception, possibly burying
  unrelated errors.
:duplicate-except (W0705): *Catching previously caught exception type %s*
  Used when an except catches a type that was already caught by a previous
  handler.
:binary-op-exception (W0711): *Exception to catch is the result of a binary "%s" operation*
  Used when the exception to catch is of the form "except A or B:". If intending
  to catch multiple, rewrite as "except (A, B):"
:logging-not-lazy (W1201): *Specify string format arguments as logging function parameters*
  Used when a logging statement has a call form of "logging.<logging
  method>(format_string % (format_args...))". Such calls should leave string
  interpolation to the logging method itself and be written "logging.<logging
  method>(format_string, format_args...)" so that the program may avoid
  incurring the cost of the interpolation in those cases in which no message
  will be logged. For more, see http://www.python.org/dev/peps/pep-0282/.
:logging-format-interpolation (W1202): *Use % formatting in logging functions and pass the % parameters as arguments*
  Used when a logging statement has a call form of "logging.<logging
  method>(format_string.format(format_args...))". Such calls should use %
  formatting instead, but leave interpolation to the logging function by passing
  the parameters as arguments.
:bad-format-string-key (W1300): *Format string dictionary key should be a string, not %s*
  Used when a format string that uses named conversion specifiers is used with a
  dictionary whose keys are not all strings.
:unused-format-string-key (W1301): *Unused key %r in format string dictionary*
  Used when a format string that uses named conversion specifiers is used with a
  dictionary that conWtains keys not required by the format string.
:bad-format-string (W1302): *Invalid format string*
  Used when a PEP 3101 format string is invalid. This message can't be emitted
  when using Python < 2.7.
:missing-format-argument-key (W1303): *Missing keyword argument %r for format string*
  Used when a PEP 3101 format string that uses named fields doesn't receive one
  or more required keywords. This message can't be emitted when using Python <
  2.7.
:unused-format-string-argument (W1304): *Unused format argument %r*
  Used when a PEP 3101 format string that uses named fields is used with an
  argument that is not required by the format string. This message can't be
  emitted when using Python < 2.7.
:format-combined-specification (W1305): *Format string contains both automatic field numbering and manual field specification*
  Usen when a PEP 3101 format string contains both automatic field numbering
  (e.g. '{}') and manual field specification (e.g. '{0}'). This message can't be
  emitted when using Python < 2.7.
:missing-format-attribute (W1306): *Missing format attribute %r in format specifier %r*
  Used when a PEP 3101 format string uses an attribute specifier ({0.length}),
  but the argument passed for formatting doesn't have that attribute. This
  message can't be emitted when using Python < 2.7.
:invalid-format-index (W1307): *Using invalid lookup key %r in format specifier %r*
  Used when a PEP 3101 format string uses a lookup specifier ({a[1]}), but the
  argument passed for formatting doesn't contain or doesn't have that key as an
  attribute. This message can't be emitted when using Python < 2.7.
:anomalous-backslash-in-string (W1401): *Anomalous backslash in string: '%s'. String constant might be missing an r prefix.*
  Used when a backslash is in a literal string but not as an escape.
:anomalous-unicode-escape-in-string (W1402): *Anomalous Unicode escape in byte string: '%s'. String constant might be missing an r or u prefix.*
  Used when an escape like \u is encountered in a byte string where it has no
  effect.
:bad-open-mode (W1501): *"%s" is not a valid mode for open.*
  Python supports: r, w, a[, x] modes with b, +, and U (only with r) options.
  See http://docs.python.org/2/library/functions.html#open
:redundant-unittest-assert (W1503): *Redundant use of %s with constant value %r*
  The first argument of assertTrue and assertFalse is a condition. If a constant
  is passed as parameter, that condition will be always true. In this case a
  warning should be emitted.
:deprecated-method (W1505): *Using deprecated method %s()*
  The method is marked as deprecated and will be removed in a future version of
  Python. Consider looking for an alternative in the documentation.