Getting and setting the chromecast volume

volume.py

#! /usr/bin/env python

import sys
import time

import pychromecast

requested_volume = float(sys.argv[1]) if len(sys.argv) > 1 else None

cast = pychromecast.get_chromecast()

time.sleep(0.5)

if requested_volume != None:
    cast.set_volume(requested_volume)
else:
    print cast.status.volume_level

Have you tried cast.wait() instead of sleeping?

What units/range is the volume? 0 to 1 or 0 to 100?

My testing is saying 0.0 to 1.0

Looks like its a double between 0 to 1. I set it at 0.45, slept 1 second, then queried, it was set at 0.44999998807907104