python - Python 无法识别 Windows 上包含回车符的文件名

Question

我想选择一个文件，但文件名包含一个回车符，因此.isfile() 不断返回False。当我使用 .fnmatch() 时，它会打印文件名，包括结尾的 回车符。

import fnmatch
import os
local_path = 'd:'+os.sep
filename = '1F80813965EDAA4FC5BA44A91E0DBFF1'
local_file = os.path.join(local_path, filename+'\r')

print( os.path.isfile(local_file) ) 
# Returns False

for file in os.listdir(local_path):
    if fnmatch.fnmatch(file, filename+'?'):
        print(repr(file)) 
        # Returns 'd:\\1F80813965EDAA4FC5BA44A91E0DBFF1\r'

这里有什么问题？是 Windows 吗？是NTFS分区吗？或者 os.path.join() 函数不理解 '\r'？

Answer 1

Windows 不允许 special characters in filename :

[...]

• Use a backslash (\) to separate the components of a path. The backslash divides the file name from the path to it, and one directory name from another directory name in a path. You cannot use a backslash in the name for the actual file or directory because it is a reserved character that separates the names into components.

[...]

• Use any character in the current code page for a name, including Unicode characters and characters in the extended character set (128–255), except for the following:
  • The following reserved characters:
    • < (less than)
    • > greater than)
    • : (colon)
    • " (double quote)
    • / (forward slash)
    • \ (backslash)
    • | (vertical bar or pipe)
    • ? (question mark)
    • * (asterisk)
  • Integer value zero, sometimes referred to as the ASCII NUL character.
  • Characters whose integer representations are in the range from 1 through 31, except for alternate data streams where these characters are allowed. For more information about file streams, see File Streams.
  • Any other character that the target file system does not allow.

如果您从另一个系统复制文件，这可能是个问题。如果您需要在 Windows 中使用此文件，您可能需要在复制前重命名它。