Control Denon Receiver Volume with basic script

DenonVol.py

# requires python 3
# Author: Justin Soderberg

# tested with Denon AVR-X1200W

import sys
import requests
import argparse

# global value for the receivers ip address
receiverIP = '10.10.1.80'


def req_increase(value):
    # iterate the amount to increase the volume (for me this is .5db intervals)

    for _ in range(value):
        # setup the post request, leaving verify false for self signed certs but not currently using SSL
        req = requests.post('http://' + receiverIP + '/MainZone/index.put.asp',
                            data={'cmd0': 'PutMasterVolumeBtn/>', 'cmd1': 'aspMainZone_WebUpdateStatus/'},
                            verify=False)
        req.raise_for_status()


def req_decrease(value):
    # iterate the amount to decrease the volume (for me this is .5db intervals)

    for _ in range(value):
        # setup the post request, leaving verify false for self signed certs but not currently using SSL
        req = requests.post('http://' + receiverIP + '/MainZone/index.put.asp',
                            data={'cmd0': 'PutMasterVolumeBtn/<', 'cmd1': 'aspMainZone_WebUpdateStatus/'},
                            verify=False)
        req.raise_for_status()


if __name__ == "__main__":

    try:
        # set default to a high number that is not valid to check if it exists,
        # I am sure there is a better way than this.
        parser = argparse.ArgumentParser(description='Change Volume of Denon Receiver.')
        parser.add_argument('-up', '-u', help='Amount to increase volume', type=int, default=555555,
                            required=False)
        parser.add_argument('-down', '-d', help='Amount to decrease volume', type=int, default=444444,
                            required=False)
        args = parser.parse_args()

        # set the args
        up = args.up
        down = args.down

        if up is not 555555:
            req_increase(up)
        elif down is not 444444:
            req_decrease(down)
        else:
            parser.print_help()
    except KeyboardInterrupt:
        print("Caught KeyboardInterrupt, exiting!")