检查obj是否是类cls的对象
class Foo(): print 'foo' demo=Foo() print isinstance(demo,Foo)
检查sub类是否是 super 类的派生类
class Foo(): print 'foo' class sub_Foo(Foo): print 'sub_Foo' print issubclass(sub_Foo,Foo)
class Foo(): print 'foo' demo=Foo() print isinstance(demo,Foo)
class Foo(): print 'foo' class sub_Foo(Foo): print 'sub_Foo' print issubclass(sub_Foo,Foo)