计算集中度风险单一借款人占比

def solve():
    from pyodide.http import open_url
    clients_csv = open_url(____).read()
    loans_csv = open_url(____).read()
    loan_classifications_csv = open_url(____).read()
    loan_provisions_csv = open_url(____).read()
    import sqlite3, pandas as pd
    from io import StringIO
    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    total = pd.read_sql_query(____).iloc[____]['____'] or ____
    result = pd.read_sql_query(____)
    result['____'] = (____).round(____)
    print(result.to_string(____))
    print()
    for _, r in result.iterrows():
        warn = '____' if r['____'] > ____ else '____'
        print(____)
    conn.close()