Quick Answer
The correct answer is int, as it is one of Python’s core immutable numeric types, representing whole numbers without a fractional component. Python’s built-in data types are categorized into numeric, sequence, mapping, set, boolean, and binary types, and int is the primary type for integer arithmetic, distinct from float which handles decimals. On the Certified Entry-Level Python Programmer PCEP exam, this question tests your ability to distinguish valid Python type names from invalid ones or from type names used in other languages—a common trap is confusing ‘string’ or ‘char’ with the correct Python type str. Remember that Python uses short, lowercase names for its built-in types: int, float, str, list, tuple, dict, set, and bool. A helpful memory tip is to think of Python’s “type names as four-letter or fewer words”—int, str, list, dict, set, bool, and float all fit this pattern, making it easier to spot impostors like ‘string’ or ‘integer’ on the exam.
This PCEP practice question tests your understanding of data types, variables, basic i/o and operators. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are valid Python data types?
real
Why wrong: No such type; float is used.
str
String type.
array
Why wrong: Not a built-in type; list is used.
int
Integer type.
char
Why wrong: Python has no char type; single characters are strings.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
str
Option B (str) is correct because Python uses 'str' as its built-in type for textual data, which is a sequence of Unicode characters. This is a fundamental data type in Python, distinct from other languages that might use 'string' or 'char'.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
real
Why it's wrong here
No such type; float is used.
str
Why this is correct
String type.
Related concept
Read the scenario before looking for a memorised answer.
array
Why it's wrong here
Not a built-in type; list is used.
int
Why this is correct
Integer type.
Related concept
Read the scenario before looking for a memorised answer.
char
Why it's wrong here
Python has no char type; single characters are strings.
Common exam traps
Python Institute often tests the distinction between Python's built-in types and types from other languages or modules, so candidates mistakenly choose 'real' (from mathematics) or 'char' (from C/Java) because they assume Python uses the same terminology.
Detailed technical explanation
Python's 'str' type is immutable and stores Unicode code points, allowing it to handle a wide range of characters from different languages. Under the hood, Python 3 uses either a 1-byte, 2-byte, or 4-byte representation per character depending on the largest code point in the string, optimizing memory usage. This design contrasts with languages like C or Java that have separate 'char' types for single characters.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PCEP exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Data Types, Variables, Basic I/O and Operators — This question tests Data Types, Variables, Basic I/O and Operators — Read the scenario before looking for a memorised answer..
The correct answer is: str — Option B (str) is correct because Python uses 'str' as its built-in type for textual data, which is a sequence of Unicode characters. This is a fundamental data type in Python, distinct from other languages that might use 'string' or 'char'.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
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.
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