1 #1.回文数
 2 number = input("请输入数字：")
 3 r-num = number[::-1]
 4 if number == r-num :
 5     print(f"{number}是回文数")
 6 #######################
 7 #2.水仙花
 8 for i in range(100,1000):
 9     a = i // 100
10     b = i //10 % 10
11     c = i %10
12     if i == a**3 + b**3 + c**3:
13         print(f"{i}是水仙花数")
14 
15 ########################
16 num = input()
17 lenth = len(n)
18 if sum(map(lambda x:int(x)**lenth ,num)) ==  int(num):
19     print("Y")
20 else:
21     print("N")
22 #3.10*10矩阵，边界全1，中间全0
23 import numpy as np
24 A = np.zeros((10,10))
25 A[:,9]=1
26 A[:,0]=1
27 A[0,:]=1
28 A[9,:]=1
29 print(A)
30 ###########################
31 #4.矩阵对角线
32 import numpy as np
33 B = np.diag([1,2,3,4,5,6,7,8,9,10])
34 print(B)
35 ###########################
36 #5.矩阵计算
37 import numpy as np
38 C = np.dot(A,B)
39 print(C)
40 ############################
41 #6.矩阵特征值，特征向量
42 import numpy as np
43 D = np.array([[1,2],[3,4]])
44 D_W,D_V = np.linalg.eig(D)
45 print(D_W)
46 print(D_V)
47 #########################