demo_utils.shell module

Run Shell commands through python

Usage:
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from demo_utils.shell import Shell

sh = Shell()

sh.run('ls')
sh.set_cwd('~')
sh.set_cwd('/')
sh.run('ls')
class demo_utils.shell.Shell(wd='')
run(command, args='')

Run shell commands

Parameters:
  • command (str) – command to run. You can add arguments afterwards
  • args (list, optional) – a list of string arguments which will be joined by spaces. Below is the implementation:
 
if len(args) > 0:
  command = ' '.join([command, args.join(' ')])
Returns:The output from subprocess.Popen. This is a 2 element list of strings
  • [0] - stdout
  • [1] - stderr
Return type:list
set_cwd(new_cwd)

Set the current Working directory for the shell.

cd doesn’t work because we don’t persist the subprocess between calls.

When setting the working directory we are simply setting the cwd argument in subprocess.Popen.

Returns:N/A
Raises:IOError – Raised when the directory we try to set doesn’t exist.