Python - re.sub 中的奇怪行为

Question

这是我正在运行的代码:

import re

FIND_TERM = r'C:\\Program Files\\Microsoft SQL Server\\90\\DTS\\Binn\\DTExec\.exe'
rfind_term = re.compile(FIND_TERM,re.I)

REPLACE_TERM = 'C:\\Program Files\\Microsoft SQL Server\\100\\DTS\\Binn\\DTExec.exe'

test = r'something C:\Program Files\Microsoft SQL Server\90\DTS\Binn\DTExec.exe something'

print rfind_term.sub(REPLACE_TERM,test)

我得到的结果是:

something C:\Program Files\Microsoft SQL Server@\DTS\Binn\DTExec.exe something

为什么有@符号？

Answer 1

您正在混合原始字符串 ( r'' ) 和普通字符串。

>>> FIND_TERM = r'C:\\Program Files\\Microsoft SQL Server\\90\\DTS\\Binn\\DTExec\.exe'
>>> REPLACE_TERM = r'C:\\Program Files\\Microsoft SQL Server\\100\\DTS\\Binn\\DTExec.exe' 
>>> rfind_term = re.compile(FIND_TERM,re.I)
>>> test = r'something C:\Program Files\Microsoft SQL Server\90\DTS\Binn\DTExec.exe something'
>>> print rfind_term.sub(REPLACE_TERM,test) 
something C:\Program Files\Microsoft SQL Server\100\DTS\Binn\DTExec.exe something