def system(cmd):
with AvoidUNCPath() as path:<EOL><INDENT>if path is not None:<EOL><INDENT>cmd = '<STR_LIT>' % (path, cmd)<EOL><DEDENT>with Win32ShellCommandController(cmd) as scc:<EOL><INDENT>scc.run()<EOL><DEDENT><DEDENT>
Win32 version of os.system() that works with network shares.

    Note that this implementation returns None, as meant for use in IPython.

    Parameters
    ----------
    cmd : str
      A command to be executed in the system shell.

    Returns
    -------
    None : we explicitly do NOT return the subprocess status code, as this
    utility is meant to be used extensively in IPython, where any return value
    would trigger :func:`sys.displayhook` calls.