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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 validate_gpg_sig(self, path, sig=None):
 """ Validate the collection rules """

        logger.debug("Verifying GPG signature of Insights configuration")
        if sig is None:
            sig = path + ".asc"
        command = ("/usr/bin/gpg --no-default-keyring "
                   "--keyring " + constants.pub_gpg_path +
                   " --verify " + sig + " " + path)
        if not six.PY3:
            command = command.encode('utf-8', 'ignore')
        args = shlex.split(command)
        logger.debug("Executing: %s", args)
        proc = Popen(
            args, shell=False, stdout=PIPE, stderr=STDOUT, close_fds=True)
        stdout, stderr = proc.communicate()
        logger.debug("STDOUT: %s", stdout)
        logger.debug("STDERR: %s", stderr)
        logger.debug("Status: %s", proc.returncode)
        if proc.returncode:
            logger.error("ERROR: Unable to validate GPG signature: %s", path)
            return False
        else:
            logger.debug("GPG signature verified")
            return True