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Python: Which practice avoids a common mistake with Variables, References, and Mutability?

Difficulty:

Medium

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which practice avoids a common mistake with Variables, References, and Mutability?

  1. Ignore the Variables, References, and Mutability issue and rely on team discipline instead of clearer APIs or invariants.
  2. Silence the Variables, References, and Mutability problem by using broad catches, hidden globals, or extra shared mutable state.
  3. Prefer the version of Variables, References, and Mutability that makes behavior less predictable as long as the code still runs.
  4. Do not confuse rebinding a name with mutating a shared object, because the two actions produce different downstream behavior.

Hint

Look for the option that protects correctness instead of hiding the problem.

Answer and rationale

Correct answer: D. Do not confuse rebinding a name with mutating a shared object, because the two actions produce different downstream behavior.

Do not confuse rebinding a name with mutating a shared object, because the two actions produce different downstream behavior. This is a common failure mode in real Python code and a frequent interview follow-up.

Track: Python