发现了别人的python笔记

觉得代码在这个网站里看起来好清晰欧，似乎在这里整理代码笔记比在evernote里面好

例如re.compile 的功用：

The sequence

prog=re.compile(pattern)result=prog.match(string)

is equivalent to

result=re.match(pattern,string)

but using re.compile() and saving the resulting regular expression object for reuse is more efficient when the expression will be used several times in a single program.