patch 8.0.0925: MS-Windows GUI: channel I/O not handled right away commit https://github.com/vim/vim/commit/62426e168ef29fb941d1bd91a112fa09445322a5 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 13 15:37:58 2017 +0200 patch 8.0.0925: MS-Windows GUI: channel I/O not handled right away Problem: MS-Windows GUI: channel I/O not handled right away. Solution: Don't call process_message() unless a message is available. (Yasuhiro Matsumoto, closes #1969)

#!/usr/bin/python
#
# Program that writes a number to stdout repeatedly
#
# This requires Python 2.6 or later.

from __future__ import print_function
import sys
import time

if __name__ == "__main__":

    done = 0
    while done < 10:
        done = done + 1
        print(done)
        sys.stdout.flush()
        time.sleep(0.05)  # sleep 50 msec