Python3打印正方形，三角形

#打印空心三角形
for i in range(6):
    for o in range(6):
        if i ==5 :
            print(' * ',end='')
        elif o == 0 :
            print(' * ', end='')
        elif o == i -0:
            print(' * ', end='')
        else:
            print('   ', end='')
    print(' ')

#打印空心正方形
for i in range(4):
    for o in range(4):
        if i == 0 or i == 3:
            print(' * ',end=''),
        elif o == 0 or o == 3:
            print(' * ',end='')
        else:
            print('   ',end='')
    print("  ")

#打印实心正方形
for i in range(5):
    for o in range(4):
        print(' * ',end='')
    print(' * ')

#打印实心三角形
for i in range(1,6):
    for o in range(0,i-1):
       print(' * ',end='')
    print(' * ')