pyemvue 0.12.1

Unofficial library for interacting with the Emporia Vue energy monitor.

PyEmVue

A Python Library for reading data from the Emporia Vue energy monitoring system.

The library can be invoked directly to pull back some basic info but requires your email and password to be added to a keys.json file, which is then replaced with the access tokens.

The backing API documentation can be accessed here

keys.json

{
    "email": "[e-mail]",
    "password": "password"
}

Usage

Log in with username/password

vue = PyEmVue()
vue.login(username='[e-mail]', password='password', token_storage_file='keys.json')

token_storage_file is an optional file path where the access tokens will be written for reuse in later invocations. It will be updated whenever the tokens are automatically refreshed.

Log in with access tokens

with open('keys.json') as f:
    data = json.load(f)

vue = PyEmVue()
vue.login(id_token=data['idToken'],
    access_token=data['accessToken'],
    refresh_token=data['refreshToken'],
    token_storage_file='keys.json')

Get customer details

vue = PyEmVue()
vue.login(id_token='id_token',
    access_token='access_token',
    refresh_token='refresh_token')

customer = vue.get_customer_details()

Returns a Customer object with email address, name, customer_gid, and creation date

Get devices

vue = PyEmVue()
vue.login(id_token='id_token',
    access_token='access_token',
    refresh_token='refresh_token')

vue.get_devices()

Returns a list of VueDevices with device information, including device_gid and list of VueDeviceChannels associated with the device. VueDeviceChannels are passed to other methods to get information for the specific channel.

Get additional device properties

vue = PyEmVue()
vue.login(id_token='id_token',
    access_token='access_token',
    refresh_token='refresh_token')

device1 = vue.get_devices()[0]
print(device1.device_name) # prints ""
device1 = vue.populate_device_properties(device1)
print(device1.device_name) # prints "Home"

Updates and returns the passed VueDevice with additional information about the device such as the device name (as set in the app), zip code, timezone, electricity costs, etc.

Arguments

• device: A VueDevice as returned by get_devices. Will be updated and returned.

Get usages for devices

vue = PyEmVue()
vue.login(id_token='id_token',
    access_token='access_token',
    refresh_token='refresh_token')

devices = vue.get_devices()
deviceGids = []
for device in devices:
    deviceGids.append(device.device_gid)

channel_usage_list = vue.get_devices_usage(deviceGids, None, scale=Scale.DAY.value, unit=Unit.KWH.value)
for channel in channel_usage_list:
    print(channel.usage, 'kwh')

Gets the usage for the given devices (specified by device_gid) over the provided time scale. May need to scale it manually to convert it to a rate if desired.

Arguments

• deviceGids: A list of device_gid values pulled from get_devices() or a single device_gid.
• instant: What instant of time to check, will default to now if None.
• scale: The time scale to check the usage over.
• unit: The unit of measurement.

Get usage over time

vue = PyEmVue()
vue.login(id_token='id_token',
    access_token='access_token',
    refresh_token='refresh_token')

devices = vue.get_devices()

usage_over_time, start_time = vue.get_chart_usage(devices[0].channels[0], datetime.datetime.utcnow()-datetime.timedelta(days=7), datetime.datetime.utcnow(), scale=Scale.DAY.value, unit=Unit.KWH.value)

print('Usage for the last seven days starting', start_time.isoformat())
for usage in usage_over_time:
    print(usage, 'kwh')

Gets the usage in the scale and unit provided over the given time range. Returns a tuple with the first element the usage list and the second the datetime that the range starts.

Arguments

• channel: A VueDeviceChannel object, typically pulled from a VueDevice.
• start: The start time for the time period. Defaults to now if None.
• end: The end time for the time period. Default to now if None.
• scale: The time scale to check the usage over.
• unit: The unit of measurement.

Toggle outlets

vue = PyEmVue()
vue.login(id_token='id_token',
    access_token='access_token',
    refresh_token='refresh_token')

outlets = vue.get_outlets()
for outlet in outlets:
    vue.update_outlet(outlet, not outlet_on)
    # alternatively it can be set on the outlet object first
    outlet.outlet_on = not outlet.outlet_on
    outlet = vue.update_outlet(outlet)

The get_outlets call returns a list of the basic outlet structure but it is also possible to get a full VueDevice for the outlet first through the get_devices call where the OutletDevice will be an object off of the VueDevice (ie device.outlet). The call to update_outlet can either take a full OutletDevice with updated values or for simplicity can also take a True/False to turn the outlet on/off without separately modifying the initial outlet object.

Disclaimer

This project is not affiliated with or endorsed by Emporia Energy.