笨办法学Python习题2-注释和#号

程序的注释是很重要的，它可以用自然语言告诉你某段代码的功能，注释里面的内容电脑不会对其进行编译。输出也无法看到。

这里继续复习一下建立文件的终端指令：

cd /users/simengred/mystuff

touch ex2.py

输入python代码：

# 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"

输出结果：

I could have code like this
this will run