Python循环控制（下）

三.循环

1. a = 0
2. while a < 5:
3. print(a)
4.     a = a + 1
5. if a == "sad":
6. break #跳过
7. continue #返回到头
8. else:
9. print("这里是break没有跳过，则执行这个')
10. for i in range(5):
11.     print(i)
12. a='123'
13. b='123'
14. a is b
15. for i,t in zip(a,b): #zip会在2个数组其中最短的那个用完停止

四.推导式

1. name = [i for i in range(1,6)] #第一个i生成值
2. name = [in for i in range(1,6) if i % 2 == 1] #判断
3. name = [(row, col) for row in range(3) for col in range(4)] #出数组
4. for row,col in name: #拆解
5. name = {i: "init" for letter in range(8)} #字典
6. name = {number for number in range(1,6) if number % 3 == 1} #集合