Richard Oudkerk added the comment:
Here is a reproduction without using multiprocessing:
create.py:
import threading, os
def foo():
print("Trying import")
import sys
print("Import successful")
pid = os.fork()
if pid == 0:
try:
t = threading.Thread(target=foo)
t.start()
t.join()
finally:
os._exit(0)
os.waitpid(pid, 0)
print("create.py complete")
run.py:
import create
print("run.py complete")
Using python2.7 and python3.3 this works as expected, but with python3.2 I get
user@mint-vm /tmp $ python3 create.py
Trying import
Import successful
create.py complete
user@mint-vm /tmp $ python3 run.py
Trying import
<Hang>
^CTraceback (most recent call last):
File "run.py", line 1, in <module>
import create
File "/tmp/create.py", line 17, in <module>
os.waitpid(pid, 0)
KeyboardInterrupt
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<http://bugs.python.org/issue15914>
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