Python - 同时运行两个命令 [英] Python - run two commands at the same time

问题描述

我是 Python 新手，在处理这段代码时遇到了问题:

I am new to Python and am having trouble with this piece of code:

while true:
   rand = random.choice(number)
   print(rand)             
   enter_word = input("Write something: ")
   time.sleep(5)

我希望能够在控制台中输入单词，同时同时在控制台中出现随机数.但是只有在我输入一个单词后才会出现一个新数字.让这两个命令同时运行的最佳方法是什么?

I want to be able to input words in the console while, at the same time, have random numbers appear in the console. But a new number only appears once I input a word. What is the best way to make both these commands run at the same time?

我需要创建一个线程还是可以做一些更简单的事情?如果我需要创建一个线程，您能否就我如何创建它提供一些帮助?

Do I need to make a thread or is there something simpler I can do? And if I need to make a thread can you please give a little help on how I would create it?

提前致谢

推荐答案

这可以通过python中的多处理模块来实现，请看下面的代码

This can be achieved by using the multiprocessing module in python, please find the code below

#!/usr/bin/python
from multiprocessing import Process,Queue
import random
import time

def printrand():
   #Checks whether Queue is empty and runs
   while q.empty():
      rand = random.choice(range(1,100))
      time.sleep(1)
      print rand


if __name__ == "__main__":
   #Queue is a data structure used to communicate between process 
   q = Queue()
   #creating the process
   p = Process(target=printrand)
   #starting the process
   p.start()
   while True:
      ip = raw_input("Write something: ")
      #if user enters stop the while loop breaks
      if ip=="stop":
         #Populating the queue so that printramd can read and quit the loop
         q.put(ip)
         break
   #Block the calling thread until the process whose join() 
   #method is called terminates or until the optional timeout occurs.
   p.join()

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