5.12 测试文件是否存在
问题
解决方案
>>> # Is a regular file
>>> os.path.isfile('/etc/passwd')
True
>>> # Is a directory
>>> os.path.isdir('/etc/passwd')
False
>>> # Is a symbolic link
>>> os.path.islink('/usr/local/bin/python3')
True
>>> # Get the file linked to
>>> os.path.realpath('/usr/local/bin/python3')
'/usr/local/bin/python3.3'讨论
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