python 输出菱形（两种方法）

方法一

rows = int(input("请输入菱形的边长：")) row = 1 """打印上层""" while row <= rows: col = 1 while col <= rows - row: print(' ',end = '') col += 1 for i in range(row): print('*',end = '') print(' ',end = '') print() row += 1 """打一下层""" bottom = rows - 1 while bottom > 0: col = 1 while bottom + col <= rows: print(' ',end = '') col += 1 for i in range(bottom): print('*',end = '') print(' ',end = '') print() bottom -= 1

方法二

rows = int(input("请输入菱形的边长：")) """打印上层""" for i in range(1, rows + 1): print(('* ' * i).center(rows * 2)) """打印下层""" for i in range(rows - 1, 0, -1): print(('* ' * i).center(rows * 2))

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