实现区域维度周报聚合

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    ds_csv = open_url(____).read()
    imp_csv = open_url(____).read()
    scr_csv = open_url(____).read()
    daily_stats = pd.read_csv(StringIO(____))
    impressions = pd.read_csv(StringIO(____))
    screens = pd.read_csv(StringIO(____))
    merged_imps = impressions.merge(____)
    print(____)
    for region, grp in merged_imps.groupby(____):
        total_imps = len(____)
        print("____"+str(____)+"____"+str(____))
    total_cost_by_model = daily_stats.groupby(____)['____'].sum().round(____)
    print(____)
    for model, cost in total_cost_by_model.items():
        print("____"+model+"____"+str(____)+"____")
    print("____"+str(round(daily_stats['____'].sum(),____))+"____")