python中while循环打印星星的四种形状

#1.定义一个行计数器row = 1while row <= 5:    #定义一个列计数器

    col = 1

    #开始循环

    while col <= row:

        print('*',end='')

        col += 1

    print('')

    row += 1

#1.定义一个行计数器row = 1while row <= 5:    #定义一个列计数器

    col = 5

    #开始循环

    while col >= row:

        print('*',end='')

        col -= 1

    print('')

    row += 1