pygame - python sched program possible timing issues -

so have number of events schedule varying delays such :

delays = [1,3,5,30, 40, 35, 12, 46, 52] 

i schedule delays as:

s = sched.scheduler(time.time, time.sleep) lagtime in delays:     s.enter(lagtime, 1, self.drawoncanvas, (arg1, arg2, arg3)) 

the function drawoncanvas doing pygame/opengl operations

the issue python time module has precision in seconds , want move in milliseconds. can set delays be:

delays = [x/1000 x in delays] 

the scheduler takes arugment of time.time , time.sleep. can use datetime here instead , accomodate it?

second doing operations mouse , feels mouse being blocked scheduler. there way stop mouse being blocked?

edit: figured need non-blocking scheduler, threading method described here creates new thread ever timer event. there way make single thread invocation?

python time module has precision in seconds

not on modern platforms -- timestamps have fractional part, while unit of measure seconds, precision typically better milliseconds.

delays = [x/1000 x in delays] 

that's ok in python 3, / non-truncating. safety wrt python 2, you'd better off with

delays = [x/1000.0 x in delays] 

apart that, existing scheduler should work fine. datetime module has no sleep functionality bit of work shoehorn in here (though feasible, don't see motivation work).