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中级

实现拨备金额月末自动重算

未完成
中级参考 代码结构已给出，请填写 ____ 处 
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()
    loan_charges_csv = open_url(____).read()
    accrual_records_csv = open_url(____).read()
    import sqlite3, pandas as pd
    from io import StringIO
    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    rates = {'____':____,'____':____,'____':____,'____':____}
    overdue = pd.read_sql_query(____)
    for _, r in overdue.iterrows():
        rate = rates.get(str(____), ____)
        new_prov = round(float(____) * rate, ____)
        print(____)
    conn.close()

示例

输入
solve()
期望输出
LN20260005  WATCH  余额:52000.00  新拨备(2%): 1040.00
LN20260006  SUBSTANDARD  余额:1350000.00  新拨备(25%): 337500.00
LN20260009  SUBSTANDARD  余额:28000.00  新拨备(25%): 7000.00
LN20260011  DOUBTFUL  余额:22000.00  新拨备(50%): 11000.00
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