[Python] Membuat segitiga dengan menggunakan python

#!/usr/bin/python
# title : segitiga
# author : poticous

n = input("Masukan n: ");
i = 0
j = n
print " " * j + "*"
while(1<=n):
 print " " * (n-1) + "*" * (i+1) + "*" + "*" * (i+1)
 n = n-1
 i = i+1