分析取餐记录与未取餐情况

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    srv=pd.read_csv(StringIO(open_url(____).read()))
    print(____)
    served=len(____); total=len(____)
    print(____)
    print(____)
    by_type=srv.groupby(____).agg(total=(____),served=(____)).reset_index()
    print(____)
    for _,r in by_type.iterrows():
        rate=round(____) if r['____']>____ else ____
        print(____)