您需要先使用os.path.splitdrive：
with open('C:/Users/visc/scratch/scratch_child/test.txt') as f:
for line in f:
drive, path = os.path.splitdrive(line)
path, filename = os.path.split(path)
print('Drive is %s Path is %s and file is %s' % (drive, path, filename))
笔记：
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