File: echo3.py

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file content (11 lines) | stat: -rw-r--r-- 276 bytes parent folder | download | duplicates (15) 
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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'))