pexpect_bug_event.py

#!/usr/bin/env python3
import sys
import pexpect

def callback(state):
    data = state['child'].before + state['child'].after
    print("Got: {:s}".format(repr(data)))
    
def main():
    cmd = ' '.join([
        sys.executable,
        'pexpect_bug_script.py'
    ])

    output, status = pexpect.run(
        cmd,
        events={'\r': callback}
    )

if __name__ == '__main__':
    main()