Python json проверяет, существует ли ключ
import json
if 'id' not in dest:
dest['id'] = -1
targetId = dest['id']
Kaeffa
import json
if 'id' not in dest:
dest['id'] = -1
targetId = dest['id']json_string = """{"a": 1, "b": 2, "c": 3}"""
a_dictionary = json.loads(json_string)
b_in_dict = "b" in a_dictionary