PCPP2 Design Patterns Practice Question
Which THREE of the following are standard ways to implement the 'Strategy' pattern in Python?
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
✓
Injecting the strategy instance at runtime
Using functions, classes, or dependency injection are all valid strategies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Injecting the strategy instance at runtime
Why this is correct
Dependency injection is standard for the Strategy pattern.
- ✓
Defining classes with a common interface
Why this is correct
This is the classic object-oriented approach.
- ✗
Hardcoding the strategy selection logic in the context
Why it's wrong here
This creates coupling and violates the pattern intent.
- ✗
Using a global variable to change strategy behavior
Why it's wrong here
Global state is generally avoided.
- ✓
Passing a function as an argument
Why this is correct
Functions are first-class citizens in Python and serve as simple strategies.
About these practice questions
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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.