[Tkinter] progressbar

[DPaul]

It appears i was looking in the wrong place for info on progressbar.
I have it working now, but still have a question.

For updates (bar moves forward) there seem to be 2 possibilities:
a) progbar.config(value= 12345)
or
b) use a kind of stringvar() (root, ...,...,variable = myVar, ...)

I collect the update values first in a list + validate them.
The simplest update would be alternative (a):

v = [100,200,300]
for x in v:
    progBar.config(value=x)

But this goes too fast, i want it to move "slowly". like a real progressbar.
I can throw in a time.sleep(...), and also a root.update(). This does the job.

But is this the best way? Should i investigate alternative (b) in some way?

thx,
Paul