后端开发|Python教程
python,re模块
后端开发-Python教程
快速入门
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import repattern = his ext = Does this text match the pattern?match = re.search(pattern, text)s = match.start()e = match.end()print(Found "{0}"\nin "{1}".format(match.re.pattern, match.string))print(from {0} to {1} ("{2}").format( s, e, text[s:e]))
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执行结果：
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#python re_simple_match.py Found "this"in "Does this text match the pattern?"from 5 to 9 ("this")import re# Precompile the patternsregexes = [ pile(p) for p in ( his, hat)]text = Does this text match the pattern?print(Text: {0}\n.format(text))for regex in regexes: if regex.search(text): result = match! else: result = o match!print(Seeking "{0}" -> {1}.format(regex.pattern, result))
执行结果：
#python re_simple_compiled.py Text: Does this text match the pattern?Seeking "this" -> match!Seeking "that" -> no match!import retext = abbaaabbbbaaaaapattern = abfor match in re.findall(pattern, text): print(Found "{0}".format(match))
执行结果：
#python re_findall.py Found "ab"Found "ab"import retext = abbaaabbbbaaaaapattern = abfor match in re.finditer(pattern, text): s = match.start() e = match.end() print(Found "{0}" at {1}:{2}.format(text[s:e], s, e))
执行结果：
#python re_finditer.py Found "ab" at 0:2Found "ab" at 5:7
