input () ——提示输入，输入对象为string格式，返回值为string格式。

python脚本示例如下：

#!/usr/bin/python3 （注：#!后面的路径可通过在terminal中输入which python确定）

myname = input ('What is your name?')

print ('Hello ' + myname)

print (myname + ', Let's add two numbers')

a = input ('Enter the first number: ') # a 是string格式

b = input ('Enter the second number: ') # b 是string格式

cc = a + b

print (cc)

print ('The sum of a and b is ' + cc)

c = int(a) + int (b) # int () 将对象转化成整数格式

print (repr(c))

print ('The sum of a and b is ' + repr (c))

运行结果如下：

What is your name? (提示输入)YY

Hello YY

YY, Let's add two numbers

Enter the fitst number: (提示输入)2.3

Enter the fitst number: (提示输入)2

'2.32'

The sum of a and b is 2.32

'4'

The sum of a and b is 4