两次之间的时间单位是什么？

Question

import time
start = time.time()
diff = int((time.time() - start) * 1000)

The time() function 'Return the current time in seconds since the Epoch'. When two seconds subtract, what's the time unit of diff?

Answer 1

The unit of measure is the same for both values, so the unit of measure after subtracting one value from another would still be seconds. However, since you're multiplying by 1000, the unit of measure for diff would be milliseconds (although this does not make diff any more precise).