python:打印直角三角形

coding=utf-8

方式一

i = 1
while i <= 5:
    j = 1
    while j <=i:
        print '*',
        j+=1
    print '\n'
    i+=1

方式二

for i in range(1, 6):
    for j in range(1, i+1):
        print "*",
    print '\n'