Python OS.PATH

import os,sys

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sys.modules.keys()
=> print all of using module
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os.getcwd()
=> show current working directory
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os.path.isdir(r'filelocation/filename') or os.path.isfile(r'filelocation')
=> True/False
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os.path.exists(r'filelocation')
=> is filelocation exists
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os.path.getsize(r'filelocation')
=> show filesize
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os.path.split(r'filelocation/filename')
=> show "filelocation","filename"
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os.path.splitext(filelocation/filename)
=> 'filename', '.txt .exe .hwp ...'
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os.chdir(r'fileloation')
=> current directory location change
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