python getoutput equivalent in subprocess

Question

I want to get the output from some shell commands like ls or df in a python script  I see that commands getoutput  ls   is deprecated but subprocess call  ls   will only get me the return code   I ll hope there is some simple solution

User · Answer

For Python    2 7  use subprocess check output     http   docs python org 2 library subprocess html subprocess check output

User · Answer

Use subprocess Popen   import subprocess process   subprocess Popen   ls    -a    stdout subprocess PIPE  stderr subprocess PIPE  out  err   process communicate   print out    Note that communicate blocks until the process terminates  You could use process stdout readline   if you need the output before it terminates  For more information see the documentation

User · Answer

To catch errors with subprocess check output    you can use CalledProcessError  If you want to use the output as string  decode it from the bytecode      return String of the output  stripped from whitespace at right side  or None on failure  def runls        import subprocess     try          byteOutput   subprocess check output   ls    -a    timeout 2          return byteOutput decode  UTF-8   rstrip       except subprocess CalledProcessError as e          print  Error in ls -a  n   e output          return None

[python] python getoutput() equivalent in subprocess

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