Question

Python Quiz 1: Question 5

Practice Python Quiz 1 Question 5 by tracing division operators and identifying the exact code output.

Question 5: Predict the code output

Read the following Python code and determine exactly what it prints:

x = 7
y = 2
print(x // y, x / y)

Answer format: Write the output exactly as it appears, including the order of the values and the space between them. Do not include quotation marks or an explanation in the answer.

Correct answer

3 3.5

Python concept being assessed

This question tests Python's division operators and basic expression evaluation:

  • // is floor division. It divides two numbers and keeps the floor of the result.
  • / is true division. In Python 3, it produces a floating-point result, even when both operands are integers.
  • print() evaluates its arguments from left to right and separates multiple arguments with a single space by default.

Explanation

  1. x is assigned the integer 7, and y is assigned the integer 2.
  2. The expression x // y becomes 7 // 2. The exact division result is 3.5, so floor division produces 3.
  3. The expression x / y becomes 7 / 2. True division produces the floating-point value 3.5.
  4. print() displays both results in their written order and places a space between them.

Therefore, the code output is:

3 3.5

Why common alternatives are incorrect

3.5 3.5 is incorrect because // does not perform ordinary true division; it performs floor division.

3 3 is incorrect because / produces 3.5, not an integer result.

3, 3.5 is incorrect because print() separates arguments with a space by default, not a comma.

Verify with a minimal example

print(7 // 2)
print(7 / 2)

This prints:

3
3.5

Troubleshooting your reasoning

Assuming another language's division rule

Some languages use integer division when both operands are integers. In Python 3, the operator determines the behavior: use // for floor division and / for true division. Test each operator in a minimal Python program instead of relying on rules from another language.

Misreading execution order or formatting

Trace the assignment statements first, then evaluate the two arguments to print() from left to right. Finally, apply Python's default output separator: one space between arguments.