RESTful : a PUT after a GET

Configuration
1

not being very familiar with the syntax of Home Assistant, in an automation,
I cannot convert the following basic program into a rest_command called by an automation

import requests
from requests.auth import HTTPBasicAuth
import json
vacationTemperature = 0
HC2addr ="x.x.x.x"
heatingSection = "8"
headers = {'Accept': 'application/json'}
hc2auth = HTTPBasicAuth('xxx', 'xxx')
url="http://{}/api/panels/heating/{}".format(HC2addr,heatingSection)
print(url)
r = requests.get(url, headers=headers, auth=hc2auth)
if r.status_code ==200:
    data=r.json()
    print(json.dumps(data, indent=4))
    if data['properties']['vacationTemperature'] != vacationTemperature:
        data['properties']['vacationTemperature'] = vacationTemperature
        r = requests.put(url, headers=headers, auth=hc2auth, json=data)
        if r.status_code == 200:
            print("OK")
        else:
            print(r.status_code)
else:
    print(r.status_code)

is it possible, even partially ?

2

as I see that it does not seem easy (possible), I use a command “shell_command:”

3

Tried NodeRed?