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初级

加载月度报表并统计

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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():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    rpts=pd.read_csv(StringIO(open_url("https://data.zuihe.com/dbd/ms-ledger/state_04/monthly_reports.csv").read()))
    print(f"Total: {len(rpts)} | Users: {rpts['user_id'].nunique()}")
    print(f"Avg expense: {round(rpts['total_expense'].mean(),2)} | Avg balance: {round(rpts['net_balance'].mean(),2)}")
    for _,r in rpts.head(5).iterrows():
        print(f"  {r['user_id']} {r['period_start']}: exp={r['total_expense']} bal={round(r['net_balance'],2)}")

示例

输入
solve()
期望输出
Total: 60 | Users: 30
Avg expense: 1966.35 | Avg balance: 7724.45
  USR-0001 2026-01-01: exp=2486.16 bal=2908.73
  USR-0001 2026-01-31: exp=2486.16 bal=8104.09
  USR-0002 2026-01-01: exp=1946.05 bal=7954.87
  USR-0002 2026-01-31: exp=1946.05 bal=8490.16
  USR-0003 2026-01-01: exp=2215.73 bal=7468.22
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