In [48]: class TestStaticMethod():
....: @staticmethod
....: def foo():
....: print'static foo is called'
....: @classmethod
....: def foo2(cls):
....: print'class foo2 is called'
....: print'foo2 is part of calss',cls.__name__
....:
In [49]: Te
Templates/ TestStaticMethod
In [49]: TestStaticMethod.foo()
static foo is called
In [50]: TestStaticMethod.foo2()
class foo2 is called
foo2 is part of calss TestStaticMethod
In [51]: test = TestStaticMethod()
In [52]: test.foo()
static foo is called
In [53]: test.foo2()
class foo2 is called
foo2 is part of calss TestStaticMethod
总结：
1 三种方法，除了实例方法只能被实例调用外，其余对于类和实例均可以被调用
2 实例方法第一个参数self
静态方法对参数无要求
类方法的第一个参数为类，一般用cls表示
