How to use dictionaries/JSON in Python + calculating a past (+ does future) date using DeltaTime

import date
import time
import datetime
import timedelta
today = datetime.datetime.now()
dict1 = {
    "name": "player_1"
    "date": "27/12/2020"
}
age = str(datetime.now() - timedelta(days=27, weeks=0, months=11, year=0)) #will always calculate the day the script is ran on, minus the date the account was made
print(dict1["name"])
print(dict1["date"])
print(age)