Home Assistant PyScript setting temperatures via pyvicare

vicare_manual_set.py

from PyViCare.PyViCare import PyViCare


COMFORT = "comfort"
NORMAL = "normal"
REDUCED = "reduced"

SLEEP = 5

@pyscript_executor
def circuit_factory():
    client_id = "{YOUR CLIENT ID FROM VIESSMAN API PORTAL}"
    email = "{YOUR VIESSMAN USER EMAIL}"
    password = "{YOUR VIESSMAN USER PASSWORD}"

    vicare = PyViCare()
    vicare.initWithCredentials(email, password, client_id, "vicare_manual_set_token.save")
    
    # if you have multiple devices or circuits, 
    # you may have to find yours in a safer way. Most people have
    # just one, so this works
    device = vicare.devices[0]
    
    boiler = device.asAutoDetectDevice()
    return boiler.circuits[0]

circuit = circuit_factory()

@pyscript_executor
def _set_program_temperature(name, temperature):
    circuit.setProgramTemperature(name, temperature)

@service
def set_default_temperatures(reduced=None, normal=None, comfort=None):
    """yaml
name: Set vicare temperature for given programs
description: Sets a temperature of specific vicare programs
fields:
  reduced:
     description: temperature of the reduced program
     example: 12
     required: false
  normal:
     description: temperature of the normal program
     example: 18
     required: false
  comfort:
     description: temperature of the comfort program
     example: 23
     required: false
    """
    
    log.info(f"Settings program temperatures: {REDUCED}={reduced}, {NORMAL}={normal}, {COMFORT}={comfort}")
    if reduced:
        _set_program_temperature(REDUCED, reduced)
        task.sleep(SLEEP)
    if normal:
        _set_program_temperature(NORMAL, normal)
        task.sleep(SLEEP)
    if comfort:
        _set_program_temperature(COMFORT, comfort)

Referenced in somm15/PyViCare#240 (comment)

Few notes:

1. pyscript adds some default global variables (such as task, log, ...)
2. it's ugly you have to have the credentials hardcoded, maybe it could be gathered from secrets somehow
3. you may have to adjust the circuit_factory to actually get the right circuit for the right device
4. the SLEEP is there because otherwise the API just disregarded the subsequent calls. Maybe you have to increase it, who knows, Viessman API is crap.