Python Basic introduction （ A full set of nanny level tutorials ）

Chapter one

Section 9 ： The simplest user interaction

We often use programs that interact with users , For example, web login , You need to enter your own account , User interaction functions such as passwords . Let's write a simple program code for user input and output ：
Follow and experience
The user login

username = input(' Please enter your user name ：')
password = input(' Please enter your password ：')
print(int(username))
print(int(password))

Calculator

a = input(" Please enter the first number :")
# print(type(a)) #  use type To see the data type of a variable 
b = input(" Please enter the second number :")

a = int(a)
b = int(b)

print(a + b)

summary ：
Variable = input( Hint )
First, the prompt will be displayed on the screen , User input content . Then give the user's input to the previous variable
pit : input() The result must be a string

How to convert a string into a numeric type
py Basic data type :
Want to put xxx To whom , Just use someone to cover it
str => int int(str)