Found json={} Found json={} Found json=[] Found json=[] Found json={"1" : 1, "1" : "2"} Found json={"1": 1} Found is_json[0]: true Found is_json[1]: false Found is_json[2]: true Found is_json[3]: true Found is_json[4]: false Found is_json[5]: false Found is_json[6]: true Found is_json[7]: false