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中级

统计各卡组掌握度进度

未完成
中级参考 代码结构已给出，请填写 ____ 处 
def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    ds=pd.read_csv(StringIO(open_url(____).read()))
    users=pd.read_csv(StringIO(open_url(____).read()))
    merged=ds.merge(____)
    print(____)
    for _,r in merged.iterrows():
        bar='____'*int(float(____)/____)
        print(____)

示例

输入
solve()
期望输出
Deck mastery by user:
  Alice: 70.5% [xxxxxxx   ] new=7 review=31 ef=2.469
  Bob: 68.0% [xxxxxx    ] new=7 review=34 ef=2.478
  Carol: 64.0% [xxxxxx    ] new=7 review=32 ef=2.478
  David: 58.0% [xxxxx     ] new=6 review=29 ef=2.458
  Eve: 82.0% [xxxxxxxx  ] new=3 review=41 ef=2.473
  Frank: 66.0% [xxxxxx    ] new=6 review=33 ef=2.438
  Grace: 68.0% [xxxxxx    ] new=7 review=34 ef=2.462
  Henry: 54.0% [xxxxx     ] new=9 review=27 ef=2.466
  Iris: 58.0% [xxxxx     ] new=6 review=29 ef=2.496
  Jack: 78.0% [xxxxxxx   ] new=5 review=39 ef=2.467
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