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import shlex as _shlex
import subprocess as _subprocess
def pipe(cmdline, input = None):
"""
wrapper around subprocess to simplify te interface
"""
args = _shlex.split(cmdline)
if input is not None:
command = _subprocess.Popen(args, stdin = _subprocess.PIPE, stdout = _subprocess.PIPE, stderr = None)
else:
command = _subprocess.Popen(args, stdin = None, stdout = _subprocess.PIPE, stderr = None)
(out, err) = command.communicate(input)
return out
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