one-file-projects/pascaltriangle.py
2014-08-31 06:14:41 +02:00

24 lines
472 B
Python

#python 3
def pascaltriangle(length):
l = [1]
yield l
for i in range(length-1):
nl = [1]
for j in range(len(l)-1):
nl.append(l[j]+l[j+1])
nl.append(1)
yield nl
l = nl
def prettyprint(l,w):
s = " ".join(map(str,l))
indent = int((w - len(s))/2)
s = (indent * " ") + s
print(s)
length = int(input('Length of pascal triangle: '))
for n in pascaltriangle(length):
prettyprint(n,length*3)