Generate a Pascal triangle of n rows.

pascal.py

# pascal traingle generator - generates n rows of triangle

if __name__ == "__main__":
	n = int(input("n: ")) # num rows
	triangle = [] # pascal triangle
	for x in range(0, n):
		# no references for the 1's at the edges
		# hard code them, generate the rest
		if x == 0:
			triangle.append([1])
		elif x == 1:
			triangle.append([1,1])
		else:
			row = []
			row.append(1)
			for y in range(0, x-1):
				row.append(triangle[x-1][y] + triangle[x-1][y+1])
			row.append(1)
			triangle.append(row)
		print(triangle[x])