1#@!#!123s

D7net

: / usr / local / src / Python-3.9.9 / Lib / test / test_asyncio /

Filename : echo3.py

back

import os

if __name__ == '__main__':
    while True:
        buf = os.read(0, 1024)
        if not buf:
            break
        try:
            os.write(1, b'OUT:'+buf)
        except OSError as ex:
            os.write(2, b'ERR:' + ex.__class__.__name__.encode('ascii'))