- python :‘’and “”any differences?  
- python 可以类似 matlab 用1:n索引数组 arr[2:len(arr)] 从0计数  
- Pulling in just a single function from a module is called a function import, and it‘s done with the fromkeyword: from math import sqrt
- a way to handpick the variables and functions we want from modules: from math import *  
- the type()function returns the type of the data it receives as an argument
- == 与 = 
python_codea_412
原文:http://www.cnblogs.com/njuzwr/p/4422738.html