“假冒（行尾）”表示您的图案以反斜杠结尾。这与Tkinter无关。您可以在交互式外壳中轻松地复制错误：
>>> import re
>>> pattern="foobar\\"
>>> re.search(pattern, "foobar")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/re.py", line 142, in search
return _compile(pattern, flags).search(string)
File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/re.py", line 241, in _compile
raise error, v # invalid expression
sre_constants.error: bogus escape (end of line)
解决方案？确保您的模式不以单个反斜杠结尾。
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