Run two while loops without tkinter or thread modules

Question

How do I make two while loops run at the same time? Here is my code design.

while True:
    print(recieve_message()) #this waits for the message
    send_message(input()) #this also waits for the input

This will not work, because both codes do not run without waiting. So, I wanted them to run on separate loops, like this:

while True:
    print(recieve_message())
while True:
    send_message(input())

how do I make these codes run simultaneously?

recieve_message

and

send_message

uses the socket module.

you need to elaborate on question more.There is only one while loop in your pseudocode. — Anil_M, Oct 27 '17 at 03:50
I meant originally that both codes will not run simultaneously, so it should be run on separate loops, but thanks! — wkpk11235, Oct 27 '17 at 03:55
One way to do this is through the [`signal`](https://docs.python.org/3/library/signal.html) module — Patrick Haugh, Oct 27 '17 at 04:00

score 2 · Accepted Answer · answered Oct 27 '17 at 03:56

2

You can use multithreading:

import threading


def f1():
    while True:
        print(recieve_message()) #this waits for the message


def f2():
    while True:
        send_message(input()) #this also waits for the input

threading.Thread(target=f1).start()
threading.Thread(target=f2).start()

answered Oct 27 '17 at 03:56

gommb

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process from multiprocessing does a similar thing too. The differences - https://stackoverflow.com/questions/3044580/multiprocessing-vs-threading-python – Jesse Oct 27 '17 at 04:02
This doesn't really work, since the computer waits for the input, then prints the output. Try it. EDIT: I found out it works in the cmd. Thanks! – wkpk11235 Oct 29 '17 at 06:40
@HyunsooKim Since this works, would you mind accepting it? – gommb Oct 29 '17 at 06:45

Run two while loops without tkinter or thread modules

1 Answers1