4.1 Output and Variables

Notes

The print() function displays output. A variable is a name that stores a value. You create one with the assignment operator =.

• Variable names use letters, digits and underscores, cannot start with a digit, and are case sensitive (score and Score are different).
• Assignment copies the value on the right into the name on the left. A variable can be changed later.
• # starts a comment, which Python ignores.

name = "Mia"
points = 10
points = points + 5
print(name, points)

• This prints Mia 15. First points is 10, then it is reassigned to 10 + 5.