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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def main():
 global modem modem = bm(port='/dev/ttyACM0', incomingcallback=callback) if modem.state == modem.STATE_FAILED: print('Unable to initialize modem, exiting.') return """Print modem information."""

    resp = modem.sendcmd('ATI3')
    for line in resp:
        if line:
            print(line)

    try:
        input('Wait for call, press enter to exit')
    except (SyntaxError, EOFError, KeyboardInterrupt):
        pass

    modem.close()