Class Timer

IPython/core/magics/execution.py:162–188

Timer class that explicitly uses self.inner which is an undocumented implementation detail of CPython, not shared by PyPy.

class Timer(timeit.Timer):
    """Timer class that explicitly uses self.inner

    which is an undocumented implementation detail of CPython,
    not shared by PyPy.
    """

    # Timer.timeit copied from CPython 3.4.2
    def timeit(self, number=timeit.default_number):
        """Time 'number' executions of the main statement.

        To be precise, this executes the setup statement once, and
        then returns the time it takes to execute the main statement
        a number of times, as a float measured in seconds.  The
        argument is the number of times through the loop, defaulting
        to one million.  The main statement, the setup statement and
        the timer function to be used are passed to the constructor.
        """
        it = itertools.repeat(None, number)
        gcold = gc.isenabled()
        gc.disable()
        try:
            timing = self.inner(it, self.timer)
        finally:
            if gcold:
                gc.enable()
        return timing


@magics_class