ex2.py 注释和#号

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本文介绍Python中注释的使用方法，包括单行注释及如何利用注释禁用代码片段，并给出具体示例。

#A comment, this is so you can read your program later.
#Anything after the # is ignored by python.

print "I could have code like this." #and the comment after is ignored

#You can also use a comment to "disable" or comment out a piece of code:
#print "This won't run."

print "This will run."

注意如果有中文注释则要在文件第一行写上：

#coding: utf-8