1 #!usr/bin/env python3

 2 # -*- coding:utf-8 -*-

 3

 4 #开始定义函数

 5 def add(x):

 6     x += 3 #等同于x = x + 3,把x的值加3后再赋值给x

 7     return x #函数返回值

 8

 9 #定义lambda函数

10 lam = lambda x : x + 3 #和上面的自定义函数等效以备后用

11 numbers = range(10) #定义一个numbers

12

13 #定义四个空列表以备后用

14 newNumbers1 = []

15 newNumbers2 = []

16 newNumbers3 = []

17 newNumbers4 = []

18 newNumbers5 = []

19

20 #循环读取numbers并将i的值依次传递给函数add获取返回值

21 for i in numbers:

22     newNumbers1.append(add(i)); #填充列表newNumbers1

23 print("New Number 1: \n\t", newNumbers1); #输出:[3, 4, 5, 6, 7, 8, 9, 10, 11, 12]

24

25 #列表解析1,循环读取i在numbers里的值并作为实参传递给函数add

26 newNumbers2 = [add(i) for i in numbers]

27 print("New Number 2: \n\t", newNumbers2) #输出:[3, 4, 5, 6, 7, 8, 9, 10, 11, 12]

28

29 #列表解析2, 循环读取i在numbers里的值并作为实参传递给函数lam

30 for i in numbers:

31     newNumbers3.append(lam(i));

32 print("New Number 3: \n\t", newNumbers3)

33

34 #列表解析3,循环读取x在numbers里的值

35 newNumbers4 = [i+3 for i in numbers]

36 print("New Number 4: \n\t", newNumbers4) #输出:[3, 4, 5, 6, 7, 8, 9, 10, 11, 12]

37

38 #lambda函数调用,循环读取i在numbers里的值并作为参数传递给lambda

39 for i in numbers:

40     newNumbers5.append(lam(i)); #填充列表4

41 print("New Number 4: \n\t", newNumbers5) #输出:[3, 4, 5, 6, 7, 8, 9, 10, 11, 12]