Python如何获取当前所在目录

#!/usr/bin/env python

import os

import sys

if __name__ == '__main__':

  print "sys.path[0] =", sys.path[0]

  print "sys.argv[0] =", sys.argv[0]

  print "__file__ =", __file__

  print "os.path.abspath(__file__) =", os.path.abspath(__file__)

  print "os.path.realpath(__file__) = ", os.path.realpath(__file__)

  print "os.path.dirname(os.path.realpath(__file__)) =", os.path.dirname(os.path.realpath(__file__))

  print "os.path.split(os.path.realpath(__file__)) =", os.path.split(os.path.realpath(__file__))

  print "os.getcwd() =", os.getcwd()

$ python /e/pyws/path_demo.py

sys.path[0] = E:\pyws

sys.argv[0] = E:/pyws/path_demo.py

__file__ = E:/pyws/path_demo.py

os.path.abspath(__file__) = E:\pyws\path_demo.py

os.path.realpath(__file__) = E:\pyws\path_demo.py

os.path.dirname(os.path.realpath(__file__)) = E:\pyws

os.path.split(os.path.realpath(__file__)) = ('E:\\pyws', 'path_demo.py')

os.getcwd() = D:\

$ ./pyws/path_demo.py

sys.path[0] = E:\pyws

sys.argv[0] = ./pyws/path_demo.py

__file__ = ./pyws/path_demo.py

os.path.abspath(__file__) = E:\pyws\path_demo.py

os.path.realpath(__file__) = E:\pyws\path_demo.py

os.path.dirname(os.path.realpath(__file__)) = E:\pyws

os.path.split(os.path.realpath(__file__)) = ('E:\\pyws', 'path_demo.py')

os.getcwd() = E:\