PCPP2 Software Testing Practice Question
Which 'unittest' assertion is best suited to verify that two floating-point numbers are equal within a certain tolerance?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
assertAlmostEqual
assertAlmostEqual is specifically designed to handle floating-point precision issues by comparing values within a specified delta.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
assertAlmostEqual
Why this is correct
This supports a 'places' or 'delta' argument for tolerance.
- ✗
assertGreater
Why it's wrong here
This only checks magnitude, not equality.
- ✗
assertEqual
Why it's wrong here
This checks for strict equality and fails on minor precision differences.
- ✗
assertSequenceEqual
Why it's wrong here
This is for lists or strings, not single floats.
About these practice questions
Courseiva writes every PCPP2 question from scratch — 194 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP2 practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCPP2 exam.