COCOA exposure_data.json の集計

cocoa.py

import json
import datetime

with open("exposure_data.json") as f:
    exposure = json.load(f)

result = {}

for x in exposure["exposure_windows"]:
    t = int(x['DateMillisSinceEpoch']) / 1000
    if t not in result:
        result[t] = 0

    # COCOAログチェッカーは ScanInstances の数は見てなさそう
    # result[t] += 1
    result[t] += len(x["ScanInstances"])

for t in sorted(result.keys()):
    dt = datetime.datetime.fromtimestamp(t)
    print(f"{dt},{result[t]}")