human
Solve the following python programming problem given the following code:
@ csrf_exempt 
@ post_required 
@ non_atomic_requests 
def incoming(request) : 
    def snake_case(s) : 
        return re.sub ('[A-Z]+', '_\\g<0>', s).lower () 
try : 
        data = [(snake_case (k), v) for (k, v) in json.loads (request.body).items ()] 
except Exception : 
        return http.HttpResponseBadRequest () 
report = CompatReport (client_ip = request.META.get ('REMOTE_ADDR', '')) 
    fields = CompatReport._meta.get_all_field_names () 
    for (key, value) in data : 
        if (snake_case in fields) : 
            setattr (report, key, value) 
else : 
            return http.HttpResponseBadRequest () 
report.save () 
    return http.HttpResponse (status = 204) 

    
    

    Fix the buggy line: if (snake_case in fields) :
assistant
#Here is Python code to fix the buggy line: if (snake_case in fields) :
.

if (key in fields) :