文件操作

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判断是文件还是文件夹

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import os
if os.path.isdir(path):
    print "it's a directory"
elif os.path.isfile(path):
    print "it's a normal file"
else:
    print "it's a special file(socket,FIFO,device file)"

判断文件是否存在

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import os
 
>>> os.path.exists('d:/assist')
 True
>>> os.path.exists('d:/assist/getTeacherList.py')
 True

获取文件大小

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import os
 
os.path.getsize(path)