#coding=utf-8import subPRocessclass FetchProcess(object):    def __init__(self):        p1 = subprocess.Popen(["ps", "-aux"], stdout=subprocess.PipE)        # p2 = subprocess.Popen(["grep", "python3"], stdin=p1.stdout, stdout = subprocess.PIPE)        self._output_temp = p1.communicate()[0].decode("utf-8").split("/n")  #列表格式        self._output = self._parse(self._output_temp)        # print("this is self._output:",self._output)            @staticmethod    def _parse(alist):        result = []        for i in alist[1:]:            temp = []            for j in i.split(" "):                if j or j != "":                    temp.append(j)            # print("this is temp",temp)            result.append(temp)        return result                def get_pid(self,process_name):        pid_list = []        for process in self._output:            if process_name in process:                pid = process[1]                pid_list.append(pid)        return pid_list    def kill_process(self,process_name):        if self.is_exist(process_name):            pid_list  = self.get_pid(process_name)            for pid in pid_list:                print("killing pid:",pid)                subprocess.call("kill" + " -9 " + pid , shell = True)        else:            print("do not exist this thread,check your process name...")                                    def is_exist(self,process_name):        pid_list = self.get_pid(process_name)        if len(pid_list) > 0:            return True        else:            return False    def start_process(self,process_name):        pass    def __exist__(self):        passif __name__  == "__main__":    myprocess = FetchProcess()    pid_list = myprocess.kill_process('main_test.py')