实现重组贷款的降级处理可疑转次级

def solve():
    from pyodide.http import open_url
    clients_csv = open_url(____).read()
    loans_csv = open_url(____).read()
    loan_repayment_schedule_csv = open_url(____).read()
    reschedule_requests_csv = open_url(____).read()
    import sqlite3, pandas as pd
    from io import StringIO
    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    result = pd.read_sql_query(____)
    for _, r in result.iterrows():
        print(____)
        print(____)
    conn.close()