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Which of the following is the correct way to use pytest.warns as a context manager?

easy🧠 Conceptual Q2 of 15
PyTest - Writing Assertions
Which of the following is the correct way to use pytest.warns as a context manager?
Awith pytest.warns(WarningType): code_to_test()
Bpytest.warns(WarningType, code_to_test())
Cpytest.warns(code_to_test(), WarningType)
Dwith pytest.warns(): code_to_test()
Step-by-Step Solution
Solution:
  1. Step 1: Recall pytest.warns syntax as context manager

    The correct syntax is to use with pytest.warns(WarningType): followed by the code block that should raise the warning.
  2. Step 2: Eliminate incorrect argument orders and missing arguments

    Options B and C misuse argument order, and D misses the warning type argument.
  3. Final Answer:

    with pytest.warns(WarningType): code_to_test() -> Option A
  4. Quick Check:

    Context manager syntax [OK]
Quick Trick: Use 'with pytest.warns(WarningType):' before the code block [OK]
Common Mistakes:
MISTAKES
  • Passing the function call instead of using a context block
  • Omitting the warning type argument
  • Swapping argument order

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