1. 类的定义

Python2中需要继承object

  1. # 默认， Python 3
  2. class A:
  3.     pass
  5. # Python 2
  6. class A(object):
  7.     pass

super

  1. # 默认，Python 3
  2. class B(A):
  3.     def add(self, x):
  4.         super().add(x)
  6. # Python 2
  7. class B(A):
  8.     def add(self, x):
  9.         super(B, self).add(x)