Python obtains the current path implementation code, and python obtains the current path

Python obtains the current path implementation code, and python obtains the current path

Python obtains the current path implementation code

Import OS, sys

Use sys. path [0], sys. argv [0], OS. getcwd (), OS. path. abspath (_ file _), OS. path. realpath (_ file __)

Sys. path is the search path list of the module that Python will search for. sys. path [0] and sys. argv [0] is one thing, because Python will automatically set sys. add argv [0]

Sys. path.

If you execute python getpath \ getpath in the C: \ test directory. py, then OS. getcwd () will output "C: \ test", sys. path [0] outputs "C: \ test \ getpath ".

If you use the py2exe module to compile the Python script as an executable file, the output of sys. path [0] will change:

If the dependent library is packaged as a zip file by default, sys. path [0] will output "C: \ test \ getpath \ libarary.zip ";

If. if the zipfile = None parameter is specified in py, the dependent library will be packaged into the exe file, so sys. path [0] outputs "C: \ test \ getpath \ getpath.exe ".

#!/bin/env python#-*- encoding=utf8 -*-import os,sysif __name__=="__main__":  print "__file__=%s" % __file__  print "os.path.realpath(__file__)=%s" % os.path.realpath(__file__)  print "os.path.dirname(os.path.realpath(__file__))=%s" % os.path.dirname(os.path.realpath(__file__))　　  print "os.path.split(os.path.realpath(__file__))=%s" % os.path.split(os.path.realpath(__file__))[0]　　  print "os.path.abspath(__file__)=%s" % os.path.abspath(__file__)  print "os.getcwd()=%s" % os.getcwd()  print "sys.path[0]=%s" % sys.path[0]  print "sys.argv[0]=%s" % sys.argv[0]

Output result:

D:\>python ./python_test/test_path.py__file__=./python_test/test_path.pyos.path.realpath(__file__)=D:\python_test\test_path.pyos.path.dirname(os.path.realpath(__file__))=D:\python_testos.path.split(os.path.realpath(__file__))=D:\python_testos.path.abspath(__file__)=D:\python_test\test_path.pyos.getcwd()=D:\sys.path[0]=D:\python_testsys.argv[0]=./python_test/test_path.py

OS. getcwd () "D: \", which is the starting execution directory.

Sys. path [0] Or sys. argv [0] "D: \ python_test", where the directory where the script is initially executed

OS. path. split (OS. path. realpath (_ file _) [0] "D: \ python_test", where the directory of the test_path.py file where _ file _ is located

Obtain the current path correctly:

_ File _ is the currently executed file # obtain the path of the current file _ print "OS. path. realpath (_ file _) = % s "% OS. path. realpath (_ file _) # obtain the directory of the current file _ print "OS. path. dirname (OS. path. realpath (_ file _) = % s "% OS. path. dirname (OS. path. realpath (_ file _) # obtain the directory where the current file _ is located print "OS. path. split (OS. path. realpath (_ file _) = % s "% OS. path. split (OS. path. realpath (_ file _) [0]

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