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jinstrive/replace_matched_part.py

Created October 22, 2015 07:44
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python string operate, replace string in Regular Expression.
Raw
replace_matched_part.py
def replace_matched_part(pattern, lstring, repl_str, group_name):
"""
:param pattern: 类似 '.*?_(?P<char>\w)_\d\.\w+$'
:param lstring: 需要替换的字符串
:param repl_str: 匹配部分替换成的字符串
:param group_name: 匹配中的组名 char
:return:
"""
def _rep_func(m):
return ''.join([m.string[:m.start(group_name)], repl_str, m.string[m.end(group_name):]])
return re.sub(pattern, _rep_func, lstring)
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