Why can a calculation with the float `0.1` show a tiny discrepancy from the expected decimal result?
Python randomly changes the final decimal digit.
Binary float cannot represent every decimal fraction exactly.✓Правильный ответ
A float always performs integer division before storage.
The value is exact, so any discrepancy must be a display bug.
Объяснение
A binary floating-point value usually stores the closest representable approximation to one tenth rather than that decimal fraction exactly. The discrepancy is therefore a representation effect, not evidence that integer division secretly occurred.