> > > try: > > > import threading > > > except ImportError: > > > threading = None # use non-threaded behaviour > > > > But then you'd have to sprinkle the rest of the code with > > "if threading is not None" tests. Brett's dummy_thread is an attempt > > to reduce this clutter. > > the problem (if there is one) is that the proposed integration may > break code that uses the above pattern. I don't propose to automate this. I propose this: try: import threading except ImportError: import dummy_threading as threading > deadlocks doesn't always happen when you want them to, so it > may not be obvious to developers and testers that their program > isn't as reliable as it was before the upgrade. So require testing on a system that has threads. --Guido van Rossum (home page: http://www.python.org/~guido/)
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