Tag Archives: decorator
Constraints on Arguments in Python
Posted by Shawn Zhang
on March 22, 2013
4 comments
When Dynamic Type comes to Trouble
As a dynamic programming languages , Python don't have a type on variables , as well as a arguments . This feature save us a lot workload and it enable us to focus on logical of program .
def add(x, y):
return x+y
print add(5,6)
>> 11
print add("D","E")
>> "DE"
print add(5.0, 6)
>> 11.0
Above function is straightforward and works fine if x and y are passed with int/ float/ string .
But things may Read more [...]
[译文]Decorators and Functional Python[draft]
Posted by Shawn Zhang
on January 16, 2013
No comments
Original blog post wrote by Brian Holdefehr. This is a Chinese version of original post .
本文原文作者 Brian Holdefehr。若有不足，敬请斧正。
装饰器(Decorators) 是Python众多强大特性之一。装饰器除了本身编程语法上的作用之外，另外提供了一种有趣思维方式——"函数化"思维(a functional way)
我会从头开始介绍介绍装饰器的工作原理，接着会介绍几个必须了解的基本概念。之后，我们会详细深入探索一些装饰器实例以及其工作方式。最后我们会讨论一些装饰器的高阶应用，例如参数化装饰器(optional Read more [...]