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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def launch(program, sock, stderr=True, cwd=None, env=None):
 """ A static method for launching a process that is connected to a given socket. Same rules from the Process constructor apply. """

        if stderr is True:
            err = sock # redirect to socket
        elif stderr is False:
            err = open(os.devnull, 'wb') # hide
        elif stderr is None:
            err = None # redirect to console

        p = subprocess.Popen(program,
                shell=type(program) not in (list, tuple),
                stdin=sock, stdout=sock, stderr=err,
                cwd=cwd, env=env,
                close_fds=True)

        sock.close()
        return p