加载资产类别并统计预期收益分布

def solve():
    from pyodide.http import open_url
    from io import StringIO
    import pandas as pd
    csv_data = open_url('https://data.zuihe.com/dbd/ms-roboadvisor/state_01/asset_classes.csv').read()
    df = pd.read_csv(StringIO(csv_data))
    result = df['asset_id'].value_counts()
    for val, count in result.items():
        print(f'{val}: {count}')