To get the time live, you can use this code:
import time
time = str(time.strftime("%M")) + ":" + str(time.strftime("%S"))
print(time)
This will give you the current time in Minutes and Seconds, and if you put it in a loop, it will keep updating itself.
If you want the day and month, you can use
print(time.strftime("%A, %B %e")) -
With this code, you can then subtract the Xmas date from the current date, and retrieve what you want.
This would be your final code:
import time
month = time.strftime("%m")
day = time.strftime("%d")
hour = time.strftime("%H")
minute = time.strftime("%M")
second = time.strftime("%S")
chrmonth = 12
chrday = 23
chrhour = 12
chrminute = 60
chrsecond = 60
print("The time until christmas is, ", int(chrmonth) - int(month), "months", int(chrday) - int(day), "days", int(chrhour) - int(hour), "hours", int(chrminute) - int(minute), "minutes", int(chrsecond) - int(second), "seconds")
Hopefully this helps!