PCEP Practice Question: Data Types, Variables, Basic I/O and Operators
What is the result of 'bool(0) and bool(1)'?
⚠ Common exam trap
Python Institute often tests the distinction between boolean values and their integer equivalents (0 and 1), tricking candidates into thinking the result is an integer like `0` or `1` instead of the boolean `False` or `True`.
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
✓
False
The expression `bool(0) and bool(1)` evaluates to `False` because `bool(0)` converts the integer 0 to `False` (since 0 is falsy in Python), and `bool(1)` converts 1 to `True`. The `and` operator returns `True` only if both operands are truthy; here, `False and True` yields `False`.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
False
Why this is correct
False and True = False.
- ✗
True
Why it's wrong here
bool(0) is False, so the and operation is False.
- ✗
1
Why it's wrong here
The result is boolean False.
- ✗
0
Why it's wrong here
The result is a boolean, not an int.
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Same concept, more angles
2 more ways this is tested on PCEP
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. What is the result of bool(0) in Python?
easy- A.0
- B.None
- C.True
- ✓ D.False
Why D: The bool() function in Python converts any value to a Boolean. The integer 0 is considered a falsy value, so bool(0) returns False. This is because Python defines 0, None, empty collections, and False itself as falsy.
Variation 2. Which TWO of the following expressions evaluate to True?
medium- A.bool('')
- B.bool([])
- ✓ C.bool(1)
- ✓ D.bool('False')
- E.bool(0)
Why C: `bool(1)` converts the integer 1 to a Boolean, and in Python any non-zero numeric value is considered truthy, so `bool(1)` returns `True`. Option D is correct because `bool('False')` converts the non-empty string `'False'` to a Boolean; in Python, any non-empty string is truthy, regardless of its textual content, so it returns `True`.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCEP 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 PCEP exam.