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Drop-in replacement for the thread module.

Meant to be used as a brain-dead substitute so that threaded code does
not need to be rewritten for when the thread module is not present.

Suggested usage is::

    try:
        import thread
    except ImportError:
        import dummy_thread as thread

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Dummy implementation of thread.start_new_thread().

    Compatibility is maintained by making sure that ``args`` is a
    tuple and ``kwargs`` is a dictionary.  If an exception is raised
    and it is SystemExit (which can be done by thread.exit()) it is
    caught and nothing is done; all other exceptions are printed out
    by using traceback.print_exc().

    If the executed function calls interrupt_main the KeyboardInterrupt will be
    raised when the function returns.

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Class implementing dummy implementation of thread.LockType.

    Compatibility is maintained by maintaining self.locked_status
    which is a boolean that stores the state of the lock.  Pickling of
    the lock, though, should not be done since if the thread module is
    then used with an unpickled ``lock()`` from here problems could
    occur from this class not having atomic methods.

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Dummy implementation of acquire().

        For blocking calls, self.locked_status is automatically set to
        True and returned appropriately based on value of
        ``waitflag``.  If it is non-blocking, then the value is
        actually checked and not set if it is already acquired.  This
        is all done so that threading.Condition's assert statements
        aren't triggered and throw a little fit.

        N(RRRR(Rtwaitflag((s1/opt/alt/python27/lib64/python2.7/dummy_thread.pytacquire_s
	
	
	
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    KeyboardInterrupt upon exiting.N(RRRR(((s1/opt/alt/python27/lib64/python2.7/dummy_thread.pyR�s
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