10.5. 字符串正则匹配
最后更新于:2022-04-01 00:49:25
re 模块为高级字符串处理提供了正则表达式工具。对于复杂的匹配和处理,正则表达式提供了简洁、优化的解决方案:
~~~
>>> import re
>>> re.findall(r'\bf[a-z]*', 'which foot or hand fell fastest')
['foot', 'fell', 'fastest']
>>> re.sub(r'(\b[a-z]+) \1', r'\1', 'cat in the the hat')
'cat in the hat'
~~~
只需简单的操作时,字符串方法最好用,因为它们易读,又容易调试:
~~~
>>> 'tea for too'.replace('too', 'two')
'tea for two'
~~~