Day4:Input 输入

在Python 2中raw_input( )将所有输入作为字符串(String)看待，返回字符串类型input( )只接收“数字”的输入，在对待纯数字输入时具有自己的特性，它返回所输入的数字的类型（ int, float ）

在Python 3中已取消raw_input之函数并把raw_input和input()整合，将所有输入默认为字符串(String)处理，并返回字符串类型。

那让我们来个程序码练习今天的input()函数。

[In]
print ("How old are you?"),
age=input()
print('How much is this?'),
price=input()
result=f"So,you are {age} years olds and this thing is {price} dollars"
#day3学到的字串格式化
#记住前面要f然後两边要加"{}"
result
[Out]
How old are you?
55
How much is this?
55
'So,you are 55 years olds and this thing is 55 dollars'

然後可以在input()函数的括号里面添加提示字，像是这样。

e.g

[In]
age=input("What is your name?")
price=input("How much is this?")
result=f"So,you are {age} years olds and this thing is {price} dollars"
#day3学到的字串格式化
#记住前面要f然後两边要加"{}"
result
[Out]
What is your name? 6
How much is this? 9
'So,you are 6 years olds and this thing is 9 dollars'

今天我的笔记就到这边XD

source:https://ppt.cc/fHC3kx