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初级

查询天气城市

未完成
初级参考 完整示例代码供参考，建议自己理解后重新输入 
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, weather FROM weather').fetchall()
    conn.close()
    return result

示例

输入
print(solve())
期望输出
[('Beijing', 2, 'Sunny'), ('Shanghai', 8, 'Cloudy'), ('Guangzhou', 15, 'Rainy'), ('Beijing', -1, 'Snowy'), ('Shanghai', 6, 'Sunny'), ('Guangzhou', 18, 'Cloudy'), ('Beijing', 3, 'Sunny'), ('Shanghai', 10, 'Sunny'), ('Guangzhou', 20, 'Sunny'), ('Beijing', 5, 'Cloudy'), ('Shanghai', 12, 'Rainy'), ('Guangzhou', 22, 'Cloudy'), ('Beijing', 4, 'Sunny'), ('Shanghai', 9, 'Cloudy'), ('Guangzhou', 19, 'Rainy')]
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