Pascal Triangle Generator (Python 3.3)

Shebang · 05-14-2014, 03:41 PM

On my way to improving my Python, I made this:

Code:
import sys
import random
from math import factorial

f = factorial

def doTriangle(t):
	for a in range(0, t + 1):
		for b in range(0, a + 1):
			x = f(a) / (f(b) * f(a - b))
			print(int(x),end=" ")
		print("")
	print("Done!")

def main():
	try:
		if len(sys.argv) == 2:
			doTriangle(int(sys.argv[1]))
		else:
			doTriangle(int(input("Compute up to: ")))
	except ValueError:
		x = int(random.randrange(2, 20))
		print("Invalid input, randomly chose " + str(x) + ".")
		doTriangle(x)

main()

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