python三角形

1.三角形

n=9
for i in range(n):
    for j in range(i):
        print(' ',end='')
    for k in range(i,n):
        print('@ ',end='')
    print()

2.等边三角形

for i in range(1,6):
    for j in range(1,6-i):
        print(" ",end="")
    for k in range(1,i+1):
        print("* ",end="")
    print("")

3.直角三角形

for i in range(1,6):
    for j in range(1,6-i):
        print("*",end=" ")
    print("")