What is the difference between = and == in Python?

What is the difference between = and == in Python?

In Python, = and == look similar but serve completely different purposes. Confusing them is a common beginner mistake and often leads to logical errors.

✅ = (Assignment Operator)

The = operator is used to assign a value to a variable.

Example:

x = 10
name = "Mohi"

Here:

• x is assigned the value 10
• name is assigned the string "Mohi"

❌ You cannot use = in conditions:

if x = 10:   # ❌ SyntaxError

✅ == (Comparison Operator)

The == operator is used to compare two values and check if they are equal.

Example:

x = 10

if x == 10:
    print("x is equal to 10")

This comparison returns a Boolean value:

• True if values are equal
• False if values are not equal

✅ Key differences at a glance

✅ Real-life example

price = 50        # assignment
price == 50       # comparison

• First line stores the value
• Second line checks the value

⚠️ Common beginner mistake

if age = 18:   # ❌ Wrong

Correct:

if age == 18:  # ✅ Correct

🔑 Summary

• Use = to store data
• Use == to compare data
• Mixing them causes errors or incorrect logic

Understanding this difference is essential for writing correct Python programs.