加载骑行记录并统计时长、距离与费用

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    trips=pd.read_csv(StringIO(open_url("https://data.zuihe.com/dbd/ms-bikeshare/state_01/trips.csv").read()))
    print(f"Total trips: {len(trips)}")
    print(f"Member trips: {trips['is_member'].sum()} ({round(trips['is_member'].mean()*100,1)}%)")
    print(f"Avg duration_min: {round(trips['duration_min'].mean(),1)}")
    print(f"Avg distance_km: {round(trips['distance_km'].mean(),2)}")
    print(f"Avg total_fee: {round(trips['total_fee'].mean(),2)}")