详解Python self 参数

# -*- coding: utf-8 -*-
class Test(object):
 def add(self, a, b):
  # 输出 a + b
  print(a + b)
 def show(self):
  # 输出 "Hello World"
  print("Hello World")

def display(a, b):
 # 输出 a * b
 print(a * b)

if __name__ == '__main__':
 test = Test()
 test.add(1, 2)
 test.show()
 display(1, 2)

class Test(object):
 def __init__(self):
  print('我是构造函数。。。。')
 def foo(self, str):
  print(str)
 @classmethod
 def class_foo(cls, str):
  print(str)
 @staticmethod
 def static_foo(str):
  print(str)

def show(str):
 print(str)

if __name__ == '__main__':
 test = Test()
 test.foo("成员函数")
 Test.class_foo("类函数")
 Test.static_foo("静态函数")
 show("普通方法")