Question

我正在尝试创建一个ZMQ订阅服务器，该订阅服务器每隔一定的时间写入CSV文件（时间无关紧要）。

我遇到的问题是我的write_csv1类甚至没有启动或初始化，并且初始化代码与ZMQ线程类相同。在添加threading.Condition和c.acquires / c.release之前，它一直在工作。

任何提示或指示都将是惊人的。

import zmq
import pandas as pd
import time
import threading


c = threading.Condition()
df = pd.DataFrame()
s = 0
m = 0
h = 0
d = 0

def counter():
    global h,s,m,d
    while True:
        s += 1
        print("Second:{}".format(s))
        if s >=60:
            m +=1
            s = 0
        if m >= 60:
            h += 1
            m = 0
        if h >= 24:
            d += 1
            h = 0        
        time.sleep(1)

class write(threading.Thread):
    def __init__(self,name):
        threading.Thread.__init__(self)
        self.name = name
    def write_csv(self):
        global df
        while True:            
            print('sleeping')            
            time.sleep(12)
            c.acquire()
            print('acquired')
            print(df)                 
            with open("FILE", 'a') as f:
                    df.to_csv(f, encoding = 'utf-8', index = False, header = False)
            c.release()
            z = zmq_thread()            
            z.run()        

class zmq_thread(threading.Thread):
    def __init__(self,name):
        threading.Thread.__init__(self)
        self.name = name
    def run(self):  
        global df
        print('DF Created')
        context = zmq.Context()
        socket = context.socket(zmq.SUB)      
        socket.connect("tcp://localhost:#####")
        socket.setsockopt_string(zmq.SUBSCRIBE, 'TOPIC') 
        print('socket connected')

        count = 0
        while True: 
            c.acquire()
            try:
                count +=1
                if count == 10:
                    print('ZMQ Break') 
                    c.notify_all()
                    c.release()
                    print('Lock released')
                    return df                
                message = socket.recv_string()
                message2 = socket.recv_string()        
                if message == 'TOPIC':
                    message2_split = message2.split(",")
                    message4 = pd.Series(message2_split)
                    df = df.append(message4, ignore_index=True)               
                    print('ZMQ Running')

            except KeyboardInterrupt:
                break              



counter = threading.Thread(target = counter)
write_csv1 = write("Write_csv")
zmq_loop = zmq_thread('Start_ZMQ')    

counter.start()
write_csv1.start()    
zmq_loop.start()

Answer 1

问题是您没有在write类上实现run()方法。您需要将write_csv(self)重命名为run(self)

线程类将无法启动或初始化

1 个答案: