Pascal's Triangle Extra Credit Assingment

After doing some research, I finally finished another extra credit assignment. We have to create a small program that would make a given amount of rows in Pascal's Triangle.

I went a step further and made it so the user can actually decide how many rows they want generated. And it gives the user a chance to run the program again and choose how many rows again.

That's all for now, thanks for reading!

Here is my code:

	# PascalsTriangle.py
	# Christian Munoz
	# 04/15/2015
	import math
	import sys
	import time
	def combination(n, r):
	"""Calculates the combinations for the numbers entered."""
	return int((math.factorial(n)) / ((math.factorial(r)) * math.factorial(n - r)))
	def pascals_triangle(rows):
	"""This is the actual Pascal's Triangle function that will generate the amount of rows passed in."""
	result = []
	for count in range(rows):
	row = []
	for element in range(count + 1):
	row.append(combination(count, element))
	result.append(row)
	return result
	def delay():
	"""This function suspend the thread for around 1 second and gives the illusion of loading."""
	time.sleep(1.0)
	def run_again():
	"""This function will run the next game if the player wants to start again."""
	decision = input("\nWould you like to run the program again? Y/N ")
	print(" ")
	decision = decision.lower()
	if decision == "yes" or decision == "y":
	main()
	else:
	print("See you later!")
	delay()
	sys.exit()
	def main():
	"""This function will first ask how many lines of the triangle they want to see."""
	user_choice = eval(input("How many rows of Pascal's Triangle do you want? "))
	print(" ")
	# This makes sure that the number will always be an integer.
	user_choice = math.floor(user_choice)
	# This checks to make sure the entry is a valid entry.
	if user_choice < 1:
	print("That is not a valid entry!\n")
	main()
	# If the entry was valid, then execute code.
	else:
	for row in pascals_triangle(user_choice):
	print(row)
	run_again()
	if __name__ == "__main__":
	main()
	sys.exit()

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