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中级

计算抵押品覆盖率抵押品价值除以贷款余额

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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()
    collaterals_csv = open_url(____).read()
    guarantors_csv = open_url(____).read()
    collateral_valuations_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(____)
    result = pd.read_sql_query(____)
    print(result.to_string(____))
    conn.close()

示例

输入
solve()
期望输出
loan_no  outstanding_balance  appraised_value  coverage_ratio
LN20260006              1350000          2000000          1.4815
LN20260002               795000          1200000          1.5094
LN20260007              1190000          1800000          1.5126
LN20260003               500000           800000          1.6000
LN20260008              1800000          3000000          1.6667
LN20260004               145000           350000          2.4138
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