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docs: improve timeit autorange description #144825

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9 changes: 4 additions & 5 deletions Doc/library/timeit.rst
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Expand Up @@ -145,13 +145,12 @@ The module defines three convenience functions and a public class:

.. method:: Timer.autorange(callback=None)

Automatically determine how many times to call :meth:`.timeit`.
Call :meth:`.timeit` automatically determined number of times.

This is a convenience function that calls :meth:`.timeit` repeatedly
so that the total time >= 0.2 second, returning the eventual
(number of loops, time taken for that number of loops). It calls
:meth:`.timeit` with increasing numbers from the sequence 1, 2, 5,
10, 20, 50, ... until the time taken is at least 0.2 seconds.
with increasing numbers from the sequence 1, 2, 5, 10, 20, 50, ...
until the time taken is at least 0.2 seconds, returning the eventual
(number of loops, time taken for that number of loops).

If *callback* is given and is not ``None``, it will be called after
each trial with two arguments: ``callback(number, time_taken)``.
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