Python Identity Operators

1. What are Identity Operators?

Identity operators are used to check whether two variables point to the same object in memory.

In simple words:
👉 They check “Are both variables the same thing?”

Python has two identity operators:

• is

• is not

2. Identity vs Equality (Very Important)

• == checks value

• is checks identity (memory location)

Example

3. The is Operator

is returns True if both variables refer to the same object.

Example

Output:

Here:

• y points to the same list as x

4. The is not Operator

is not returns True if both variables do not refer to the same object.

Example

Output:

Even though values look same, they are different objects.

5. Identity with Numbers (Simple Note)

Small numbers may behave the same because Python saves memory.

Example

Output:

👉 Do not depend on this behavior.

6. Identity with Lists (Important)

Lists with same values are not the same object.

Example

7. Identity Operator in if Statement

Example

👉 This is a very common and correct use of is.

8. Common Beginner Mistakes

❌ Using is Instead of ==

✔ Correct:

❌ Comparing Values Instead of Objects

It works, but it is not good practice.

9. Simple Practice Examples

Example 1: Check None

Example 2: Same List Check

Example 3: Different Objects

10. Summary (Identity Operators)

✔ Identity operators check memory location
✔ is means same object
✔ is not means different object
✔ Use == for value check
✔ Use is for None check

📘 Perfect for Beginner eBook

This chapter is ideal for:

• Python beginner books

• School & college students

• Self-learners

If you want next, I can write:

• Python Membership Operators

• Operator Exercises

• if–else statements

• MCQs with answers

Just tell me 😊