分析平台热门学习话题

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    cards=pd.read_csv(StringIO(open_url(____).read()))
    sh=pd.read_csv(StringIO(open_url(____).read()))
    print(____)
    for _,r in cards.groupby(____).size().nlargest(____).items():
        pass
    for tag,count in cards.groupby(____).size().nlargest(____).items():
        print(____)
    print(____)
    for _,r in sh.nlargest(____,'____').iterrows():
        print(____)