Python中的Socket并发

Question

我正在使用这个库：ESCPOS Printer for Python使用Ethernet类与printer进行通信：CLASS ESCPOS ETHERNET

我尝试使用简单线程执行许多调用，如上图所示：

from time import sleep
import requests
import threading
import datetime
from escposprinter import *
from escposprinter.escpos import EscposIO, Escpos


NumeroPartenza = 0
NumeroFine = 9
NumeroStampePerStampante = 1  


printerPort = 9100
dictionaryStampanti = {'printer1' : '192.168.0.196','printer2' : '192.168.0.197',  'printer3' : '192.168.0.198'}


def printSimple(threadName, stampanteIp):
    with EscposIO(printer.Network(stampanteIp, printerPort)) as p:
        for iteration in range(NumeroStampePerStampante):
            p.set(font='a', codepage='cp1251', size='normal', align='center', bold=True)
            p.writelines('')
            p.writelines('')
            p.writelines('')
            p.writelines("{0}: {1}".format( threadName, datetime.datetime.now().strftime("%H:%M:%S.%f")))
            p.writelines('')
            p.writelines('')
            p.writelines('')



#Testa stampante semplice
for Ordine in range(NumeroPartenza, NumeroFine):
    stringToPrint = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.'
    threading.Thread(target=printSimple, args=("Thread1: " + stringToPrint, dictionaryStampanti.get('printer1')), ).start()

    threading.Thread(target=printSimple, args=("Thread2: " + stringToPrint, dictionaryStampanti.get('printer1')), ).start()

    threading.Thread(target=printSimple, args=("Thread3: " + stringToPrint, dictionaryStampanti.get('printer1')), ).start()

但它经常失败，给我一个错误：Err 60连接超时，我的意思是，为什么使用线程并发调用打印机我遇到这个问题？你知道吗

有人能帮我解决这个问题吗？你知道吗

谢谢