Simulate dice rolls and see probability between 2 to 12.

diceRoll.py

from random import randint


# Simulate 2 dice being rolled
def dieRoll():
    return randint(1, 6) + randint(1, 6)


# Store results in a dictionary
results = {n: 0 for n in range(2, 13)}

# Ask user how many tests they want to run
rolls = int(input("How many die rolls do you want to simulate? "))

# Roll the dice 1,000,000 times
for x in range(0, rolls):
    results[dieRoll()] += 1

# Calculate percentages
for key, value in results.items():
    print(key, ':', "{:.1%}".format(value/rolls))