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初级

检查卡片数据必填字段完整性

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
    cards=pd.read_csv(StringIO(open_url("https://data.zuihe.com/dbd/ms-memcard/state_00/cards.csv").read()))
    REQUIRED=['card_id','deck_id','user_id','card_type','front','back']
    print("Card data integrity:")
    for field in REQUIRED:
        nulls=cards[field].isna().sum() if field in cards.columns else len(cards)
        empty=(cards[field].astype(str)=='').sum() if field in cards.columns and cards[field].dtype==object else 0
        issues=nulls+empty
        print(f"  {field}: {'OK' if issues==0 else f'ISSUES:{issues}'} ({len(cards)-issues}/{len(cards)})")

示例

输入
solve()
期望输出
Card data integrity:
  card_id: OK (1852/1852)
  deck_id: OK (1852/1852)
  user_id: OK (1852/1852)
  card_type: OK (1852/1852)
  front: OK (1852/1852)
  back: OK (1852/1852)
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