【原创】Python 获取当前文件所在目录

关于python获取当前脚本路径的方法很多，讨论也不少，例一, 例二, 例三等等，就不一一列举了。
多数给的结论都是: os.path.split(os.path.realpath(__file__))[0]
实验测试一下，额外加入了pyinstaller打包的exe程序测试：

import os, sys
print('os.getcwd():', os.getcwd())
print('dirname(sys.path[0]):',os.path.dirname(sys.path[0]))
print('dirname(abspath(sys.argv[0])):',os.path.dirname(os.path.abspath(sys.argv[0])))
print('dirname(realpath(__file__)):',os.path.dirname(os.path.realpath(__file__)))

实测结果：

C:\Users>python E:\WorkShop\Python\pathTest.py D:\tmp\test.txt
os.getcwd(): C:\Users
dirname(sys.path[0]): E:\WorkShop
dirname(abspath(sys.argv[0])): E:\WorkShop\Python
dirname(realpath(__file__)): E:\WorkShop\Python

C:\Users>E:\WorkShop\Python\pathTest.exe D:\tmp\test.txt
os.getcwd(): C:\Users
dirname(sys.path[0]): C:\Users\DIEGNI~1\AppData\Local\Temp\_MEI17442
dirname(abspath(sys.argv[0])): E:\WorkShop\Python
dirname(realpath(__file__)): C:\Users

C:\Users>E:
E:\>cd WorkShop\Python

E:\WorkShop\Python>pathTest.exe D:\tmp\test.txt
os.getcwd(): E:\WorkShop\Python
dirname(sys.path[0]): C:\Users\XIAONI~1\AppData\Local\Temp\_MEI12962
dirname(abspath(sys.argv[0])): E:\WorkShop\Python
dirname(realpath(__file__)): E:\WorkShop\Python

E:\WorkShop\Python>python pathTest.py D:\tmp\test.txt
os.getcwd(): E:\WorkShop\Python
dirname(sys.path[0]): E:\WorkShop
dirname(abspath(sys.argv[0])): E:\WorkShop\Python
dirname(realpath(__file__)): E:\WorkShop\Python

结论显而易见，用sys.argv[0]是最靠谱的。