decorator.py

from functools import wraps


def check_recaptcha(function):
    @wraps(function)
    def wrapped(request, *args, **kwargs):
        request.recaptcha_is_valid = None
        
        if request.method == 'POST':
            recaptcha_response = request.POST.get('g-recaptcha-response')
            data = {
                'secret': config('RECAPTCHA_SECRET_KEY'),
                'response': recaptcha_response
            }
            r = requests.post('https://www.google.com/recaptcha/api/siteverify', data=data)
            request.recaptcha_is_valid = r.json()['success']
                 
        return function(request, *args, **kwargs)
    
    return wrapped