2️⃣

2.2 Variables

Variables

Variables are things you can store data in. For example, if I want the computer to remember the number 5, I can assign it to a variable as data. You do that by coming up with a variable name (let’s call our variable x) and saying x = 5.

Now when you say x in your code, the computer will remember you saved 5 into x, and recall it. Here are some examples and their corresponding type name in Python:

  • x = 5 → integer (int)
  • a = 9.2 → floating point number (float)
  • hey = ‘hello’ → string (str)
  • ohmygod = ‘ random string’ → string (str)
  • green = True → boolean (bool)

Example code:

# use variables to store data
first_name = "Jane"
last_name = 'Doe'

age = 25

price = 16.54

is_raining = True
can_vote = False

# variables can be assigned different values
print(first_name) # prints Jane
first_name = "John"
print(first_name) # prints John

View code on GitHub.

Practice

Store Data

Set a variable named message to "Hi it's a good day" and a variable named x to 24.

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