Python函数打印图案：按输入参数生成对称星号图案

def print_pattern(n):\n for i in range(1, n+1):\n for j in range(1, 2i):\n print("", end="")\n print("")\n for i in range(n-1, 0, -1):\n for j in range(1, 2i):\n print("", end="")\n print("")\n\n# 测试示例\nprint_pattern(1)\nprint("-----------------")\nprint_pattern(2)\nprint("-----------------")\nprint_pattern(3)\nprint("-----------------")\nprint_pattern(4)