Quick Answer
The correct answer is that both from pkg.bar import foo and from pkg import bar followed by bar.foo are valid ways to import a function from a subpackage. The first method directly binds the function foo into the current namespace by specifying the full dotted path from the package to the module, which is the most explicit and commonly used approach. The second method works because importing the module bar from pkg makes bar an attribute of pkg, and then foo is accessed as an attribute of that module object, which Python resolves at runtime. On the PCAP exam, this tests your understanding of Python’s import system and the distinction between importing a module versus importing a specific name from it. A common trap is assuming that from pkg import bar.foo is valid syntax, but Python does not allow chaining attributes after the import keyword. For a quick memory tip, remember that the dot in an import statement always stops at the last module or package name; anything after that must be accessed as an attribute.
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 methods are valid ways to import a function named 'foo' from a module 'bar' that is part of a package 'pkg'?
import bar
Why wrong: Ignores the package; would import a top-level bar module if exists, not pkg.bar.
from pkg.bar import foo
Correct absolute import.
import pkg; pkg.bar.foo
Why wrong: Requires pkg.bar to be loaded, which is not done by 'import pkg' alone unless imported elsewhere.
from pkg import bar; bar.foo
Works after importing the module.
import pkg.bar.foo
Why wrong: Invalid syntax; function cannot be imported directly like that.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
from pkg.bar import foo
Option B is correct because the 'from pkg.bar import foo' syntax directly imports the 'foo' function from the 'bar' submodule within the 'pkg' package, making 'foo' available in the current namespace. Option D is also correct because it first imports the 'bar' module from 'pkg' using 'from pkg import bar', then accesses 'foo' as an attribute of 'bar' (bar.foo), which is a valid two-step approach.
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.
import bar
Why it's wrong here
Ignores the package; would import a top-level bar module if exists, not pkg.bar.
from pkg.bar import foo
Why this is correct
Correct absolute import.
Related concept
Read the scenario before looking for a memorised answer.
import pkg; pkg.bar.foo
Why it's wrong here
Requires pkg.bar to be loaded, which is not done by 'import pkg' alone unless imported elsewhere.
from pkg import bar; bar.foo
Why this is correct
Works after importing the module.
Related concept
Read the scenario before looking for a memorised answer.
import pkg.bar.foo
Why it's wrong here
Invalid syntax; function cannot be imported directly like that.
Common exam traps
Python Institute often tests the distinction between importing a module versus importing an attribute from a module, and the trap here is that candidates mistakenly think 'import pkg.bar.foo' (Option E) is valid syntax, when in fact you can only import modules or packages with the dotted-path import statement, not functions or classes.
Detailed technical explanation
In Python, packages are directories containing an __init__.py file, and submodules are .py files within that directory. The 'from pkg.bar import foo' syntax triggers Python's import machinery to locate 'pkg/bar.py', execute it, and bind the name 'foo' from its namespace into the current scope. The two-step approach in D works because 'from pkg import bar' adds 'bar' to the local namespace as a module object, and then 'bar.foo' accesses the attribute from that module. A common real-world scenario is when you want to avoid namespace pollution or when you need to use the module object for dynamic attribute access.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
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FAQ
Modules and Packages — This question tests Modules and Packages — Read the scenario before looking for a memorised answer..
The correct answer is: from pkg.bar import foo — Option B is correct because the 'from pkg.bar import foo' syntax directly imports the 'foo' function from the 'bar' submodule within the 'pkg' package, making 'foo' available in the current namespace. Option D is also correct because it first imports the 'bar' module from 'pkg' using 'from pkg import bar', then accesses 'foo' as an attribute of 'bar' (bar.foo), which is a valid two-step approach.
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.
About these practice questions
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Same concept, more angles
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. Which THREE of the following are valid ways to import a function named 'calculate' from a module named 'math_ops' located in a subpackage 'operations' of a package 'app'?
hardWhy A: Option A is correct because it uses the standard Python import syntax to directly import the 'calculate' function from the 'math_ops' module, which is located in the 'operations' subpackage of the 'app' package. This is the most straightforward and recommended way to import a specific attribute from a module.
Last reviewed: Jun 30, 2026
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