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#!/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.
"""
from __future__ import unicode_literals
from prompt_toolkit import prompt
from prompt_toolkit.patch_stdout import patch_stdout
import threading
import time
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()
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