如何在python中反转星号三角形

使用字符串方法

str.rjust

>>> num = int(input("Enter the number of rows: "))>>> for i in range(1, num + 1):...     print(" ".join("*" * i).rjust(num * 2))Enter the number of rows: 5         *       * *     * * *   * * * * * * * * *