Test your knowledge: dates and times

Review

1. Which type represents only a calendar date?

   Use date when there is no clock time in the value.
2. What does subtracting two date objects return?

   The timedelta exposes the day difference through its days attribute when the result is date subtraction.
3. Which method is appropriate for parsing a supported ISO 8601 datetime string?

   fromisoformat() parses supported ISO 8601 forms; isoformat() converts the object to text.
4. What happens when you compare a naive datetime and an aware datetime with < ?

   Python cannot infer the intended timezone of a naive datetime during ordering.
5. Which operation converts an aware datetime to the same instant in a different timezone?

   astimezone() converts clock fields for the destination zone while preserving the instant.
6. Why is adding 24 hours not a universal replacement for “same local time tomorrow” across timezone changes?

   Local calendar scheduling and elapsed duration have different semantics near offset transitions.