Gabriel Genellina gagsl-...@yahoo.com.ar added the comment:
Yes, this is exactly the problem. The execution never goes beyond print
('here'); if you print frame.f_lineno you'll see it blocks at io.py
line 1036, waiting for a Lock for the second time.
So the trace function cannot use print, not
Antoine Pitrou pit...@free.fr added the comment:
Thanks for the investigation! The problem has already been reported in
#3618. Closing this one.
--
resolution: - duplicate
status: open - closed
superseder: - possible deadlock in IO library (Lib/io.py)
New submission from Fabio Zadrozny fab...@users.sourceforge.net:
In Python 3.0, the interpreter will not shutdown properly after setting
a tracing function and something goes into stdout.
The code attached shows the problem in action: just execute it and
notice how the interpreter will be kept
Antoine Pitrou pit...@free.fr added the comment:
I haven't investigated, but in py3k print() has currently bits written
in Python, which means it will get (recursively) traced when called from
the trace function. It can of course have all kinds of funny implications!
--
nosy: +pitrou
