#!/usr/bin/env python
"""
An example that demonstrates how `patch_stdout` works.

This makes sure that output from other threads doesn't disturb the rendering of
the prompt, but instead is printed nicely above the prompt.
"""
import threading
import time

from prompt_toolkit import prompt
from prompt_toolkit.patch_stdout import patch_stdout


def main():
    # Print a counter every second in another thread.
    running = True

    def thread():
        i = 0
        while running:
            i += 1
            print("i=%i" % i)
            time.sleep(1)

    t = threading.Thread(target=thread)
    t.daemon = True
    t.start()

    # Now read the input. The print statements of the other thread
    # should not disturb anything.
    with patch_stdout():
        result = prompt("Say something: ")
    print("You said: %s" % result)

    # Stop thread.
    running = False


if __name__ == "__main__":
    main()