if json exists python code example

Example 1: python check if key exist in json

json_string = """{"a": 1, "b": 2, "c": 3}"""
a_dictionary = json.loads(json_string)

b_in_dict =  "b" in a_dictionary

Example 2: how to check if json has a key python

b_in_dict =  "b" in a_dictionary