sherry

def users_dict_from_file(user_file):
    with open(user_file, 'r') as f:
        user_dict_list = json.load(f)
        username_dict = {}
        for user in user_dict_list:
            user_id = user['id']
            username = user['name']
            username_dict[user_id] = username
    return username_dict


# print users
def print_users(users_dict):
    for key, value in users_dict.items():
        print(key, value)


# load messages
def messages_from_file(message_file):
    with open(message_file, 'r') as f:
        message_dict_list = json.load(f)
        return message_dict_list


# print messages
def print_messages(message_dict_list, username_dict):
    for message in message_dict_list:
        username = username_dict[message['user']]
        timestamp = float(message['ts'])
        formatted_time = time.ctime(timestamp)
        print(formatted_time, ':')
        print(username, ':', message['text'])


# run code
user_file = '/Users/sherry/PycharmProjects/chat/users.json'
message_file = '/Users/sherry/PycharmProjects/chat/2015-10-15.json'

username_dict = users_dict_from_file(user_file)
print_users(username_dict)
messages = messages_from_file(message_file)
print_messages(messages, username_dict)