Overview

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`timer` is a C extension that provides a `Timer` class that operates similar to the `threading` module's `Timer` factory. Provided a duration in microseconds and a callable, the timer can be constructed and started.: >>> callback = lambda: print("Time up!") >>> t = timer.Timer(1000000, callback) # One second timer >>> t.start() Time up! `Timer` objects can also be constructed with optional arguments and keyword arguments to be passed to the callback.: >>> def callback(*args, **kwargs): ... print(args, kwargs) ... >>> t = timer.Timer(1000000, callback, 1, 2, 3, hurf="durf") >>> t.start() (1, 2, 3) {'hurf': 'durf'} `Timer` objects provide microsecond resolution when stopped. The value is returned from the `stop` method, and also available in the `elapsed` attribute.: >>> t = timer.Timer(10000000, callback) # Ten second timer >>> t.start() >>> # Call stop after about three seconds >>> t.stop() 3534569 >>> # Close enough, that's 3.534569 seconds >>> t.elapsed 3534569 For an idea of how this works, check out the source code and/or read http://msdn.microsoft.com/en-us/magazine/cc163996.aspx. A number of Win32 APIs are used to supplement `QueryPerformanceCounter <http://msdn.microsoft.com/en-us/library/ms644904(VS.85).aspx>`_ to keep the timing high resolution and accurate. This is fairly stable but doesn't have a lot of tests and hasn't been used all that much. I've tested it on Python 3.1 and backported it to work with Python 2.7. It probably works from other versions but I haven't tried. Development occurs at https://bitbucket.org/briancurtin/timer.