Home > Backend Development > Python Tutorial > python通过函数属性实现全局变量的方法

python通过函数属性实现全局变量的方法

WBOY
Release: 2016-06-06 11:16:02
Original
1485 people have browsed it

本文实例讲述了python通过函数属性实现全局变量的方法。分享给大家供大家参考。具体分析如下:

python的函数可以定义属性,而且是全局的,这个非常好用,例如用于数字累加,你不用专门去定义一个全局变量,使用函数的属性即可。

def add(x=1):
  try:
    add.sum += x
  except AttributeError:
    add.sum = x
  return add.sum
print add(3)
print add(4)
print add(10)
class Ax(object):
  def __init__(self, val=0):
    self.sum = val
     
  def __call__(self, x=1):
    self.sum += x
    return self.sum
add = Ax()    
print add(3)
print add(4)
print add(10)
Copy after login

希望本文所述对大家的Python程序设计有所帮助。

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template