temperature.py 文件源码

def fetch_data(self, state):
        query = QUERY % {'state': NAMES_TO_CODES[state], 'year': YEAR}
        dataframe = run_query(query, cache_key='temperature-%s' % NAMES_TO_CODES[state])
        dataframe['date'] = pd.to_datetime(dataframe[['year', 'month', 'day']])
        dataframe['date_readable'] = dataframe['date'].apply(lambda x: x.strftime("%Y-%m-%d"))
        dataframe['left'] = dataframe.date - pd.DateOffset(days=0.5)
        dataframe['right'] = dataframe.date + pd.DateOffset(days=0.5)
        dataframe = dataframe.set_index(['date'])
        dataframe.sort_index(inplace=True)
        return dataframe