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初级

加载用户数据并统计学习目标分布

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():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    users=pd.read_csv(StringIO(open_url("https://data.zuihe.com/dbd/ms-memcard/state_00/users.csv").read()))
    print(f"Total users: {len(users)}")
    print(f"By learning goal: {dict(users.groupby('learning_goal').size())}")
    print(f"By timezone: {dict(users.groupby('timezone').size())}")
    print(f"Avg daily new cards: {round(users['daily_new_cards'].mean(),1)}")
    print(f"Avg streak days: {round(users['streak_days'].mean(),1)}")

示例

输入
solve()
期望输出
Total users: 20
By learning goal: {'general_knowledge': np.int64(6), 'language_learning': np.int64(3), 'pass_exam': np.int64(6), 'professional_dev': np.int64(5)}
By timezone: {'America/New_York': np.int64(2), 'Asia/Shanghai': np.int64(15), 'Europe/London': np.int64(3)}
Avg daily new cards: 17.2
Avg streak days: 43.4
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