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中级

统计批处理作业平均执行时长

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
    offices_csv = open_url(____).read()
    staff_csv = open_url(____).read()
    savings_products_csv = open_url(____).read()
    clients_csv = open_url(____).read()
    savings_accounts_csv = open_url(____).read()
    savings_account_transactions_csv = open_url(____).read()
    gl_accounts_csv = open_url(____).read()
    journal_entries_csv = open_url(____).read()
    cob_job_logs_csv = open_url(____).read()
    account_balance_snapshots_csv = open_url(____).read()
    import sqlite3, pandas as pd
    from io import StringIO
    from datetime import datetime
    conn = sqlite3.connect(____)
    pd.read_csv(StringIO(____)).to_sql(____)
    df = pd.read_sql_query(____)
    df['____'] = df.apply(lambda r: int((datetime.fromisoformat(____)-datetime.fromisoformat(____)).total_seconds()), axis=____)
    result = df.groupby(____)['____'].mean().round(____).astype(____).reset_index()
    result.columns = ['____','____']
    result = result.sort_values(____)
    print(result.to_string(____))
    conn.close()

示例

输入
solve()
期望输出
job_name  avg_duration_seconds
    INTEREST_ACCRUAL                   351
   REPORT_GENERATION                   140
    BALANCE_SNAPSHOT                    86
   CHARGE_DUE_UPDATE                    75
    GL_BALANCE_CHECK                    58
DORMANT_ACCOUNT_SCAN                    45
      MATURITY_CHECK                    30
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