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star_list2 的第二种处理形式：
star_list2.append(' ' * ((i + 1) // 2) + '*' * (n - i - 1) + ' ' * ((i + 1) // 2)) if n % 2 else star_list2 = reversed(star_list1)

# -*- coding: UTF-8 -*-
# @Author: Sai_Python12
# @Email: 932934045@qq.com
# @File: StarStar.py

class MyStar:
    '''星星类'''
    def __init__(self, n):
        self.n = n
        self.data_1 = [] #存放上半部左侧空格数量
        self.data_2 = [] #存放上半部星号数量

    def my_star(self):
        K = int((self.n+1)/2) #K 为上部一半
        for i in range(1, K+1):#i 为行数
            self.data_1.append(K-i)
            self.data_2.append(2*i-1)
            print(' '*self.data_1[i-1] + '*'*self.data_2[i-1])

        if self.n % 2 == 0:
            for i in range(1, K+1):
                print(' '*self.data_1[-i] + '*'*self.data_2[-i])
        else:
            for i in range(1, K):
                print(' '*self.data_1[-i-1] + '*'*self.data_2[-i-1])
        print(self.data_1)
        print(self.data_2)

if __name__ == '__main__':
    MyStar(6).my_star()

if name == 'main':
num = int(input('input a number:'))
newLi = []
li = [x for x in range(1,num,2)]
if num % 2 != 0:
newLi = li + [num] +li[::-1]
else:
newLi = li + li[::-1]
print(newLi)
for i in newLi:
print(i*'*')