Running windows shell commands with python

Question

How can we interact with OS shell using Python   I want to run windows cmd commands via python  How can it be achieved

User · Answer

You would use the os module system method.

You just put in the string form of the command, the return value is the windows enrivonment variable COMSPEC

For example:

os.system('python') opens up the windows command prompt and runs the python interpreter

os.system('python') example

User · Answer

You can use the subprocess package with the code as below   import subprocess cmdCommand    python test py     specify your cmd command process   subprocess Popen cmdCommand split    stdout subprocess PIPE  output  error   process communicate   print output

User · Answer

import subprocess result      win cmd    ipconfig  curr user filename ip address  process   subprocess Popen win cmd  shell True  stdout subprocess PIPE  stderr subprocess PIPE   for line in process stdout      print line result append line  errcode   process returncode for line in result      print line

User · Answer

The newer subprocess check output and similar commands are supposed to replace os system   See this page for details   While I can t test this on Windows  because I don t have access to any Windows machines   the following should work   from subprocess import check output check output  dir C    shell True    check output returns a string of the output from your command   Alternatively  subprocess call just runs the command and returns the status of the command  usually 0 if everything is okay    Also note that  in python 3  that string output is now bytes output   If you want to change this into a string  you need something like  from subprocess import check output check output  dir C    shell True  decode     If necessary  you can tell it the kind of encoding your program outputs   The default is utf-8  which typically works fine  but other standard options are here   Also note that  bluescorpion says in the comments that Windows 10 needs a trailing backslash  as in check output  dir C      shell True    The double backslash is needed because   is a special character in python  so it has to be escaped    Also note that even prefixing the string with r doesn t help if   is the very last character of the string     r dir C    is a syntax error  though r dir C     is not

User · Answer

Simple Import os package and run below command   import os os system  python test py

User · Answer

Refactoring of  srini-beerge s answer which gets the output and the return code  import subprocess def run win cmd cmd       result          process   subprocess Popen cmd                                 shell True                                 stdout subprocess PIPE                                 stderr subprocess PIPE      for line in process stdout          result append line      errcode   process returncode     for line in result          print line      if errcode is not None          raise Exception  cmd  s failed  see above for details   cmd

[python] Running windows shell commands with python

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