Steps to using 'not' operator in Python with examples

📚 Quick Study Guide

• 🔍 The not operator in Python is a unary operator that performs logical negation.
• 💡 It reverses the truth value of a boolean expression. If an expression is True, not makes it False, and vice versa.
• 📝 The syntax is simple: not expression.
• 💻 It's commonly used in conditional statements (if, elif, else) and loops (while) to control program flow.
• ✅ Example: not (5 > 3) evaluates to False because (5 > 3) is True.
• 🧠 Remember that not has lower precedence than most other operators, so use parentheses for clarity.

Practice Quiz

1. What is the result of not True?

   1. True
   2. False
   3. None
   4. Error

2. What is the result of not False?

   1. True
   2. False
   3. None
   4. Error

3. What will be printed when the following code is executed?

   x = 5
   if not x > 10:
       print("Hello")
   else:
       print("World")

   1. Hello
   2. World
   3. Error
   4. Nothing

4. What is the result of not (10 == 5)?

   1. True
   2. False
   3. None
   4. Error

5. Which of the following is the correct syntax for using the not operator?

   1. not expression
   2. expression not
   3. !expression
   4. expression!

6. What will be printed when the following code is executed?

   x = True
   y = False
   if not x and not y:
       print("Both are False")
   else:
       print("At least one is True")

   1. Both are False
   2. At least one is True
   3. Error
   4. Nothing

7. What is the result of not (not True)?

   1. True
   2. False
   3. None
   4. Error