Python Coding Challenge - Question with Answer (ID 081126)

 

800 Days Python Coding Challenges with Explanation

Explanation:

Step 1: Initialize Variable

x = 5

- A variable x is created.

- Its initial value is 5.

Step 2: Understand the Walrus Operator (:=)

(x := x + 3)

- := is called the Walrus Operator or Assignment Expression.

- It calculates the value and assigns it to the variable at the same time.

Calculation:

x = 5 + 3x = 8

So, the first expression returns 8.

Step 3: Evaluate the Second Expression

(x := x - 2)

- Now x is already 8.

- We subtract 2 and assign the result back to x.

Calculation:

x = 8 - 2x = 6

So, the second expression returns 6.

Step 4: Perform Multiplication

8 * 6

Both expressions are evaluated from left to right.

\[

8 \times 6 = 48

\]

3. Final Output

48

4. Key Concepts to Remember

Concept Explanation

:= Assigns and returns a value in an expression

x + 3 Updates x from 5 to 8

x - 2 Updates x from 8 to 6

* Multiplies the two returned values

Final Answer: 48

800 Days Python Coding Challenges with Explanation