This PCAP practice question tests your understanding of modules and packages. 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 statements about Python packages are true?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A package can contain subpackages.
Option A is correct because Python packages are directories that can contain subpackages (nested directories with their own __init__.py files), forming a hierarchical namespace. This allows for organized module grouping, such as `package.subpackage.module`, which is a core feature of Python's module system.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
A package can contain subpackages.
Why this is correct
Packages can be nested.
Related concept
Read the scenario before looking for a memorised answer.
✓
An __init__.py file can be empty.
Why this is correct
An empty __init__.py is sufficient to mark a directory as a package.
Related concept
Read the scenario before looking for a memorised answer.
✗
Packages cannot be imported using the import statement with dot notation.
Why it's wrong here
Packages and submodules can be imported using dot notation.
✗
An __init__.py file is required in every directory to make it a package.
Why it's wrong here
Python 3.3+ introduced namespace packages that do not require __init__.py.
✗
A package is a single .py file.
Why it's wrong here
A single .py file is a module, not a package.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Python Institute often tests the misconception that an __init__.py file is always required for a directory to be a package, but since Python 3.3, namespace packages without __init__.py are valid, making option D a classic trap.
Detailed technical explanation
How to think about this question
Under the hood, Python's import system uses `__path__` to resolve subpackages, and the `__init__.py` file (when present) initializes the package namespace. In real-world projects, packages like `numpy` contain subpackages such as `numpy.linalg`, demonstrating hierarchical imports. A subtle behavior: an empty `__init__.py` is valid and simply marks the directory as a regular package, while omitting it entirely creates a namespace package that can span multiple directories on the filesystem.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Modules and Packages — This question tests Modules and Packages — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A package can contain subpackages. — Option A is correct because Python packages are directories that can contain subpackages (nested directories with their own __init__.py files), forming a hierarchical namespace. This allows for organized module grouping, such as `package.subpackage.module`, which is a core feature of Python's module system.
What should I do if I get this PCAP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This PCAP 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 PCAP exam.
Question Discussion
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