- Input
- Output
- Storing values in variables
- A combination of the above.
Variables are used to hold data within the program. In python you do not need to assign it to a certain data type as this is done automatically.
Example Use:
a = 5 #This would be defined as an integer
b = "Hello, World" #This would be defined as a string
c = 5.000 #This would be defined as a float
Input
To allow the users to input data into the program we use the
input() function. Most of the time this will be paired up with assigning it to a variable to store the data.Example Use:
name = input("Please enter your name: ")
The "Please enter your name: " is the prompt that tells the user what the program is asking for.
Output
To allow the program to output data from the program.
Example Use:
print("Hello, World!")
print(name) In this case the contents of the variable "name" will be printed to the screen
Combination of all three
We will now create a program that uses variables input and output.
First off we will get the user to input some data.
name = input("Please enter your name: ")
age = input("How old are you?: ")
We have now got two things from them, their name(stored in the variable "name") and their age(stored in the variable "age").
We can now print this variables out with a print statement.
print("Hello",name,"you are",age, "years old")
You now have a program that will ask the user their name and age and print out the output of both of these in a sentence.
