查询温度最高的城市

def solve():
    import sqlite3
    import pandas as pd
    conn = sqlite3.connect(':memory:')
    df = pd.read_csv('https://liangdaima.com/static/data/ds_weather.csv')
    df.to_sql('weather', conn, index=False)
    result = conn.execute('SELECT city, temperature FROM weather ORDER BY temperature DESC LIMIT 3').fetchall()
    conn.close()
    return result