[Solved] What will be the result of this test code?def test_value(): value = 0.1 + 0.2 assert value == pytest.approx(0.3) | PyTest

PyTest - Writing Assertions

What will be the result of this test code?

def test_value():
    value = 0.1 + 0.2
    assert value == pytest.approx(0.3)

ATest passes because 0.1 + 0.2 is exactly 0.3

BTest fails due to floating-point precision error

CTest passes because pytest.approx allows small differences

DSyntaxError because pytest.approx is used incorrectly

Step-by-Step Solution

Solution:

Step 1: Understand floating-point addition
0.1 + 0.2 is not exactly 0.3 due to floating-point precision limits.
Step 2: Effect of pytest.approx in assertion
pytest.approx allows a small tolerance, so the assertion passes despite tiny difference.
Final Answer:
Test passes because pytest.approx allows small differences -> Option C
Quick Check:
Floating-point sum ≈ 0.3 passes with approx [OK]

Quick Trick: Use approx to handle float rounding errors [OK]

Common Mistakes:

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