从包含转义字符的字符串中提取键值对

问题描述

此问题基于:从包含键值对的字符串中获取python字典

我想获取键值对，其值对包含逃脱出来的等号.

I'd like to get key, value pairs with values that contain equals signs that are escaped out.

r = "key1=value1 key2=value2 request=http://www.pandora.com/json/music/artist/justin-moore?explicit\\=false uri=3DLoiRDsBABCAA9FvE1htRg\\=\\="
regex = re.compile(r"\b(\w+)=([^=]*)(?=\s\w+=\s*|$)")
d = dict(regex.findall(r))
print(d)

{'key2': 'value2', 'key1': 'value1'}

我似乎无法获得带有转义等号的值.我很确定([^ =] *)部分是错误的.我想我需要匹配任何不包含下一个key =

I cannot seem to get the values with escaped equals signs. I'm pretty sure the ([^=]*) part is wrong. I think I need to match on anything not containing the next key=

推荐答案

不要在字符串拆分有效的地方使用正则表达式:

Don't use a regular expression where string splitting will work:

dict(s.split('=', 1) for s in r.split())

演示:

>>> r = "key1=value1 key2=value2 request=http://www.pandora.com/json/music/artist/justin-moore?explicit\\=false uri=3DLoiRDsBABCAA9FvE1htRg\\=\\="
>>> dict(s.split('=', 1) for s in r.split())
{'key2': 'value2', 'key1': 'value1', 'request': 'http://www.pandora.com/json/music/artist/justin-moore?explicit\\=false', 'uri': '3DLoiRDsBABCAA9FvE1htRg\\=\\='}

这消除了转义=个字符的需要.

This removes the need to escape = characters.

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