python第二章练习题

2-1string = "I am a fresh man!!!"
print(string)输出结果：
I am a fresh man!!!

2-2temp = 2
print(temp)
temp = "haha"
print(temp)输出结果：
2
haha

2-3name = "Eric"
print("Hello " + name + ", would you like to learn some Python today?")
输出结果：
Hello Eric, would you like to learn some Python today?

2-4name = "luffy"
print(name.lower())
print(name.upper())
print(name.title())输出结果：
luffy
LUFFY
Luffy

2-8print(3 + 5)
print(10 - 2)
print(2 * 4)
print(16 / 2)输出结果：
8
8
8
8.0

2-9my_favorite_num = 7
my_favorite_num = "my favorite num is " + str(my_favorite_num) + "."
print(my_favorite_num)输出结果：
my favorite num is 7.