will this work

[deanhystad]

I don't think you can use random.randint() to draw a card, at least not if you want it to mimic drawing a card from a physical deck. What you've written is more like rolling a die. The difference is that when you draw cards from a deck you remove the cards. Those particular cards cannot be drawn again, and drawing a card changes the probability of what card is drawn next. When rolling a die the next roll is not affected in any way by the previous roll

To draw cards from a deck you should create a deck of cards, shuffle the deck, take cards off the top of the deck.

import random

# Create deck of cards that contains 8 infantry, 8 tanks, 4 planes
deck = ["infantry"] * 8 + ["tank"] * 8 + ["plane"] * 4
random.shuffle(deck)
print(deck)

Output:
['tank', 'plane', 'tank', 'infantry', 'tank', 'tank', 'infantry', 'infantry', 'tank', 'infantry', 'plane', 'tank', 'infantry', 'infantry', 'infantry', 'plane', 'plane', 'tank', 'infantry', 'tank']

To draw a card from the deck just pop() off the first card. Now the deck contains 1 less card.