system.py 文件源码

def pid(self, process_name):
        """
            process_name: System Process Name
            return: Process name's pid, integer
        """
        for proc in psutil.process_iter():
            try:
                pinfo = proc.as_dict(attrs=['pid', 'name'])
                p_name = pinfo['name']
                p_pid = pinfo['pid']

                if process_name == p_name:
                    return p_pid

            except psutil.NoSuchProcess:
                pass