TypeError: Cannot Subtract date from datetime

Why This Happens

datetime.date and datetime.datetime are different types. You cannot subtract one from the other. Convert both to the same type first.

The Problem

from datetime import date, datetime
today = date.today()
now = datetime.now()
delta = now - today

The Fix

from datetime import date, datetime
today = date.today()
now = datetime.now()
delta = now.date() - today  # Convert datetime to date

Step-by-Step Fix

1. 1

   Convert to same type

   Use .date() on datetime, or datetime.combine(date, time.min).

2. 2

   Check data types

   Use type() to verify date vs datetime.

3. 3

   Be consistent

   Use datetime throughout, convert to date only for display.