import json


def ReadJson(json_file_path, key):
    with open(json_file_path, 'r', encoding='UTF-8') as f:
        s = json.load(f)
        if not key in s:
            return None
        return s[key]


def getJsonKeys(json_str):
    return json_str.keys()


if __name__ == "__main__":
    # keystore = ReadJson("/Users/guweibing/921sdk/demo/config.json", "keystore")
    # print keystore
    pass