Python Coding Challange - Question With Answer(01301224)

 

Step-by-Step Explanation:

1. Assign x = 5:

   • The variable x is assigned the value 5.

2. Assign y = (z := x ** 2) + 10:

   • The expression uses the walrus operator (:=) to:
     • Compute x ** 2 (the square of x), which is 5 ** 2 = 25.
     • Assign this value (25) to the variable z.
   • The entire expression (z := x ** 2) evaluates to 25, which is then added to 10.
   • So, y = 25 + 10 = 35.

   After this line:

   z = 25y = 35

3. Print Statement:

   • The print function uses an f-string to display the values of x, y, and z:
     • {x=} outputs: x=5
     • {y=} outputs: y=35
     • {z=} outputs: z=25

4. Output: The program prints:

   
   x=5 y=35 z=25

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Key Points:

• Walrus Operator (:=):

  • Assigns x ** 2 (25) to z and evaluates to 25 in the same expression.
  • This reduces the need for a separate assignment line for z.

• Order of Operations:

  • First, z is assigned the value x ** 2 (25).
  • Then, y is computed as z + 10 (25 + 10 = 35).

• Unrelated Variables:

  • x is not affected by the assignments to y or z. It remains 5 throughout.

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Equivalent Code Without the Walrus Operator:

If we didn’t use the walrus operator, the code could be written as:

x = 5
z = x ** 2
y = z + 10print(f"{x=} {y=} {z=}")

This would produce the same output:

x=5 y=35 z=25

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Why Use the Walrus Operator Here?

Using the walrus operator is helpful for:

• Conciseness: It combines the assignment of z and the computation of y in one line.
• Efficiency: It eliminates redundant code by directly assigning z during the computation.