How to get input from user with non- blocking function in Python?

Question

I tried a lot to find how to use msvcrt.kbhit() but all I write, it works wrong... I tried:

while True:
    msg = ''
    print("Waiting for your message.\n")
    time.sleep(1)  # I tried with and without this line...  
    if msvcrt.kbhit():
        msg = msvcrt.getch().decode()
        print(msg, end='', flush=True)
        if ord(msg) == 13:  # Client enter 'ENTER'
            break

In this line: print(msg, end='', flush=True) end and flush are red ???

(Other than that, all the code works great! When I used INPUT - everything worked fine...)

Answer 1

Ok, this code is a 'replacement' for input(), but uses msvcrt.

import msvcrt
import time

def nonblocking_input(prompt):
    print(prompt, end='', flush=True)
    msg = ''
    while True:
        if msvcrt.kbhit():
            ch = msvcrt.getch().decode()
            if ord(ch) == 13:
                print()
                return msg
            print(ch, end='', flush=True)
            msg += ch
        time.sleep(0.05)

def main():
    msg = nonblocking_input('Waiting for your message: ')
    print(f'Ok, got:"{msg}"')

main()

I used time.sleep(0.05) to reduce the average cpu load.

I tested this code with python at the windows cmd prompt because pycharm seems to have a problem with msvcrt