PyCharm: How can I use breakpoints in multithreaded code?

Question

I want to use PyCharm, but I really need to use breakpoints in threads other than the main thread.

In this example code, PyCharm does not break within the threaded function. Is there a way to fix that?

import time, threading
def f():
    while True:
        time.sleep(1.0)
        print 'tick-tock' # Put a breakpoint here...

th = threading.Thread(target=f)
th.start()
time.sleep(30)
print 'done.'

Edit: Platform details: Mac OS 10.9, Python 2.7.6, PyCharm 3.4.1

Answer 1

This seems to work for me:

#!/usr/bin/python

import time
import threading
import pdb

def f():
    while True:
        time.sleep(1.0)
        print 'tick-tock' # Put a breakpoint here...
        pdb.set_trace()

th = threading.Thread(target=f)
th.start()
time.sleep(30)
print 'done.'

During execution:

┌───┤/tmp├──────────────────────────────────────┤0.43├──────┤20140612.211049├───
└─┤goncalog@darkside:pts/1│ret=1├────> python test.py 
tick-tock
> /tmp/test.py(8)f()
-> while True:
(Pdb) list
  3     import time
  4     import threading
  5     import pdb
  6     
  7     def f():
  8  ->     while True:
  9             time.sleep(1.0)
 10             print 'tick-tock' # Put a breakpoint here...
 11             pdb.set_trace()
 12     
 13     th = threading.Thread(target=f)
(Pdb) c
tick-tock
> /tmp/test.py(8)f()
-> while True:
(Pdb)