Variables
Variables are a way to store and use data within a program. Variables must be declared within the program and assigned to be used.
Key Points
Each variable is stored as a specific data type.
Variables can either be assigned directly or by user input.
Creating a Variable
Creating a variable is easy. The following code will create three variables; name, age and budget Each will be assigned a value.
#This assigns name to John. name is a string. name = "John" #This assigns age to 21. age is an integer. age = 21 #This assigns price to 9.99. price is a float/real price = 9.99
Creating a Variable from User Input
Variables can also be assigned directly by user input.
#This allows a user to store a name. name is still a string.
name = str(input("Please enter your name: "))
#This allows a user to enter their age. age is still an integer.
age = int(input("Please enter your age: "))
#This allows a user to store a price. price is still a float/real.
price = float(input("Please enter a price: "))
Using a Variable
With variables declared you can now use them throughout your code.
name = "John"
if name == "John":
print("Hello John")