Free PCEP Operator Precedence and Binding Questions and Answers

Question 1

What is the result of the following expression?

`print(2 + 3 * 4)`

Accepted Answer

14

Answer

In Python, the multiplication operator (`*`) has higher precedence than the addition operator (`+`). Therefore, `3 * 4` is evaluated first, resulting in 12. Then, `2 + 12` is evaluated, giving the final result of 14.

Question 2

What will be printed to the console after executing this code?

`print(-4 ** 2)`

Accepted Answer

-16

Answer

The exponentiation operator (`**`) has a higher precedence than the unary minus operator (`-`). The expression is evaluated as `-(4 ** 2)`, which calculates to `-(16)`, resulting in -16.

Question 3

What is the output of the following expression?

`print(10 // 3 % 2)`

Accepted Answer

1

Answer

The floor division (`//`) and modulo (`%`) operators have the same precedence and are evaluated from left to right. First, `10 // 3` is calculated, which results in 3. Then, `3 % 2` is calculated, which results in 1.

Question 4

What is the result of this expression?

`print(2 ** 3 ** 2)`

Accepted Answer

512

Answer

The exponentiation operator (`**`) has right-to-left associativity. This means the expression is evaluated as `2 ** (3 ** 2)`. First, `3 ** 2` is calculated to be 9, and then `2 ** 9` is calculated, which is 512.

Question 5

What is the output of the following code?

`print(5 * 2 > 8 and 3 + 4 == 7)`

Accepted Answer

True

Answer

First, the arithmetic and comparison expressions are evaluated. `5 * 2 > 8` becomes `10 > 8`, which is `True`. `3 + 4 == 7` becomes `7 == 7`, which is also `True`. Finally, the logical `and` operator evaluates `True and True`, resulting in `True`.

(PCEP) Certified Entry-Level Python Programmer Practice Test

(PCEP) Certified Entry-Level Python Programmer Practice Test

Free PCEP Operator Precedence and Binding Questions and Answers