python习题3

1.每一行上面用#为自己写个注释，说一下这一行作用

 1 print("I will now count my chickens:")#打印I will now count my chickens:
 2 
 3 print("Hens",25+30/6)#打印出 hens 和25+30/6结果
 4 print("Roosters",100-25*3*4)同上
 5 
 6 print("Now I will count the eggs:")
 7 
 8 print(3+2+1-5+4%2-1/4+6)#计算结果并打印
 9 
10 print("Is it true that 3+2<5-7?")#打印
11 
12 print(3+2<5-7)
13 
14 print("What is 3+2?",3+2)
15 print("What is 5-7?",5-7)
16 
17 print("Oh,that's why it's False.")
18 
19 print("Is it greater?",5>-2) #判断5>-2真假
20 print("Is it greater or equal?",5>=-2)
21 print("Is it less or equal?",5<=-2)

 

 

笔记：

%：求余数

运算优先级：括号（）、指数、乘除、加减

posted @ 2018-11-15 15:33  yuriya  阅读(284)  评论(0)  编辑  收藏  举报