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中级

分析告警触发与处置统计

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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
    from io import StringIO
    import pandas as pd
    alerts_csv = open_url(____).read()
    alerts = pd.read_csv(StringIO(____))
    print("____" + str(len(____)))
    print(____)
    for level, grp in alerts.groupby(____):
        print("____" + level + "____" + str(len(____)))
    unack = alerts[alerts['____'].isna() | (____)]
    print("____" + str(len(____)))
    resolved = alerts[alerts['____'].notna() & (____)]
    if len(____) > ____:
        resolved = resolved.copy()
        resolved['____'] = pd.to_numeric(____) - resolved['____']
        print("____" + str(len(____)) + "____" + str(round(resolved['____'].mean()/____,____)) + "____")
    print(____)
    for did, grp in alerts.groupby(____):
        print("____" + did + "____" + str(len(____)) + "____" + str(list(grp['____'].unique())))

示例

输入
solve()
期望输出
Total alerts: 5
By level:
  critical: 3
  warning: 2
Unacknowledged: 2
Resolved: 3, avg time: 31.1 min
By device:
  DEV001: 1 alerts, metrics=['temperature']
  DEV004: 1 alerts, metrics=['vibration_rms']
  DEV007: 1 alerts, metrics=['temperature']
  DEV008: 1 alerts, metrics=['pressure']
  DEV009: 1 alerts, metrics=['temperature']
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