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Why does a fixture factory return a function instead of a direct value in pytest?

hard🧠 Conceptual Q10 of 15
PyTest - Fixtures
Why does a fixture factory return a function instead of a direct value in pytest?
ABecause pytest requires all fixtures to return functions
BTo allow passing parameters dynamically to customize fixture behavior
CTo delay execution until all tests finish
DTo automatically cache results for faster tests
Step-by-Step Solution
Solution:
  1. Step 1: Understand fixture factory design

    Returning a function allows passing parameters when calling the fixture, customizing behavior.
  2. Step 2: Eliminate incorrect reasons

    Pytest does not require fixtures to return functions; delaying execution or caching is unrelated.
  3. Final Answer:

    To allow passing parameters dynamically to customize fixture behavior -> Option B
  4. Quick Check:

    Fixture factory returns function for parameter flexibility [OK]
Quick Trick: Return function to accept parameters dynamically [OK]
Common Mistakes:
MISTAKES
  • Thinking pytest requires fixtures to return functions
  • Confusing fixture factories with caching mechanisms
  • Assuming delayed execution purpose

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