pylint-errors
W0201 (attribute-defined-outside-init)
Problematic code:
class Foo:
def bar(self):
self.baz = True
Correct code:
class Foo:
def __init__(self):
self.baz = None
def bar(self, value):
self.baz = value
Rationale:
Used when an instance attribute is defined outside the __init__ method.