third_party.pylibs.pylint.src/pylint/test/input/func_method_could_be_function.py

# pylint: disable=R0903,R0922,W0232,print-statement
"""test detection of method which could be a function"""

__revision__ = None

class Toto(object):
    """bla bal abl"""

    def __init__(self):
        self.aaa = 2

    def regular_method(self):
        """this method is a real method since it access to self"""
        self.function_method()

    def function_method(self):
        """this method isn' a real method since it doesn't need self"""
        print 'hello'


class Base(object):
    """an abstract class"""

    def __init__(self):
        self.aaa = 2

    def check(self, arg):
        """an abstract method, could not be a function"""
        raise NotImplementedError


class Sub(Base):
    """a concret class"""

    def check(self, arg):
        """a concret method, could not be a function since it need
        polymorphism benefits
        """
        return arg == 0

class Super(object):
    """same as before without abstract"""
    attr = 1
    def method(self):
        """regular"""
        print self.attr

class Sub1(Super):
    """override method with need for self"""
    def method(self):
        """no i can not be a function"""
        print 42

    def __len__(self):
        """no i can not be a function"""
        print 42

    def __cmp__(self, other):
        """no i can not be a function"""
        print 42