import json
import subprocess
from datetime import datetime

## creating the JSON

## grabbing the logged in users since yesterday
last_here = subprocess.run(["last", "-s", "today"], capture_output=True)
logged_in_today = subprocess.run(["sudo journalctl -S yesterday _COMM=systemd-logind -o json"], capture_output=True)
output = json.loads(last_here)

print(output)

today =  datetime.today().strftime('%Y-%m-%d-%H:%M:%S')

with open("data_" + today + ".json", 'w') as f:
    print(output, file = f)