| :mod:`dummy_threading` --- Drop-in replacement for the :mod:`threading` module | 
 | ============================================================================== | 
 |  | 
 | .. module:: dummy_threading | 
 |    :synopsis: Drop-in replacement for the threading module. | 
 |  | 
 | **Source code:** :source:`Lib/dummy_threading.py` | 
 |  | 
 | -------------- | 
 |  | 
 | This module provides a duplicate interface to the :mod:`threading` module.  It | 
 | is meant to be imported when the :mod:`_thread` module is not provided on a | 
 | platform. | 
 |  | 
 | Suggested usage is:: | 
 |  | 
 |    try: | 
 |        import threading | 
 |    except ImportError: | 
 |        import dummy_threading as threading | 
 |  | 
 | Be careful to not use this module where deadlock might occur from a thread being | 
 | created that blocks waiting for another thread to be created.  This often occurs | 
 | with blocking I/O. | 
 |  |