冰桶挑战描述统计

def solve():
    import pandas as pd

    url = 'https://data.zuihe.com/ds/ice_bucket.csv'
    df = pd.read_csv(url)
    mean_val = df['upload_day'].mean()
    std_val = df['upload_day'].std()
    median_val = df['upload_day'].median()
    print(f'{mean_val:.2f},{std_val:.2f},{median_val:.2f}')