global threading.Lock not locking correctly?

[Tim Peters]

[Afanasiy]
> I am replying to this just to answer your question. My question was
> already answered. However, I am now curious what I should have said
> instead of "P.S. this is simplified example code". I am finding it
> difficult to communicate here and I consider my English excellent.

Grant explained it well.  Your "P.S. this is simplified example code" added
no information, so it's natural to question why you wrote it.  The usual
answer to that is (as Grant explained) that it's not actually code you've
run.