← Back to Python Course Foundations

Python Variables

Learning Objectives

• Apply valid variable naming rules.
• Use dynamic typing and multiple assignment.
• Distinguish local and global scope.

Example

x, y = 10, 20
name = "Asha"

count = 0

def increment():
    global count
    count += 1

increment()
print(x, y, name, count)

Dry Run

• x=10, y=20, name=Asha
• increment() updates global count to 1

Common Mistakes

• Using keywords as variable names.
• Expecting local function variable to update global value without global.

Practice

1. Demonstrate type change in same variable.
2. Create function with local and global variable comparison.