from datetime import datetime import json data = json.load(open("inbox/XXXXXXXX/message_1.json")) prev_date = "" for m in reversed(data["messages"]): date = datetime.fromtimestamp(m['timestamp_ms'] // 1000) str_date = date.strftime("%Y-%m-%d") if str_date != prev_date: print(str_date) prev_date = str_date if "content" in m: sender = "T:" if m["sender_name"].startswith("Nishio"): sender = "N:" print(sender, m["content"].encode("latin-1").decode("utf-8"))