patch 8.1.1775: error message may be empty in filetype test commit https://github.com/vim/vim/commit/eee9f65b2a213e9031f172d9d3b22adad6cb985d Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jul 29 21:14:42 2019 +0200 patch 8.1.1775: error message may be empty in filetype test Problem: Error message may be empty in filetype test. Solution: Use v:exception instead. (Daniel Hahler, closs https://github.com/vim/vim/issues/4744)

#!/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