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初级

查询鸢尾花尺寸

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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_iris.csv')
    df.to_sql('iris', conn, index=False)
    result = conn.execute('SELECT sepal_length, sepal_width, species FROM iris').fetchall()
    conn.close()
    return result

示例

输入
print(solve())
期望输出
[(5.1, 3.5, 'setosa'), (4.9, 3.0, 'setosa'), (4.7, 3.2, 'setosa'), (4.6, 3.1, 'setosa'), (5.0, 3.6, 'setosa'), (5.4, 3.9, 'setosa'), (4.6, 3.4, 'setosa'), (5.0, 3.4, 'setosa'), (4.4, 2.9, 'setosa'), (4.9, 3.1, 'setosa'), (7.0, 3.2, 'versicolor'), (6.4, 3.2, 'versicolor'), (6.9, 3.1, 'versicolor'), (5.5, 2.3, 'versicolor'), (6.5, 2.8, 'versicolor'), (5.7, 2.8, 'versicolor'), (6.3, 3.3, 'versicolor'), (4.9, 2.4, 'versicolor'), (6.6, 2.9, 'versicolor'), (5.2, 2.7, 'versicolor'), (6.3, 3.3, 'virginica'), (5.8, 2.7, 'virginica'), (7.1, 3.0, 'virginica'), (6.3, 2.9, 'virginica'), (6.5, 3.0, 'virginica'), (7.6, 3.0, 'virginica'), (4.9, 2.5, 'virginica'), (7.3, 2.9, 'virginica'), (6.7, 2.5, 'virginica'), (7.2, 3.6, 'virginica')]
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