python 获取txt文件中指定的段落

获取 txt文件中，从到之间的内容

用正则表达式实现：

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import re

file = open('power_whitelist_cfg.txt')
keyStart = ''
keyEnd = ''
buff = file.read()
pat = re.compile(keyStart+'(.*?)'+keyEnd, re.S)
result = pat.findall(buff)
file.close()

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