time.sleep works erratically, a bug in Python?

[buran]

from the docs (3.8):

time.sleep(secs)

Suspend execution of the calling thread for the given number of seconds. The argument may be a floating point number to indicate a more precise sleep time. The actual suspension time may be less than that requested because any caught signal will terminate the sleep() following execution of that signal’s catching routine. Also, the suspension time may be longer than requested by an arbitrary amount because of the scheduling of other activity in the system.

Changed in version 3.5: The function now sleeps at least secs even if the sleep is interrupted by a signal, except if the signal handler raises an exception (see PEP 475 for the rationale).

i.e. that behavior is described in the docs, no guarantees for precision

similar discussion on SO: https://stackoverflow.com/questions/1133...time-sleep

also who are we