[Patches] [ python-Patches-1533909 ] Let timeit accept functions

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Patches item #1533909, was opened at 2006-08-03 14:32
Message generated for change (Comment added) made by gbrandl
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Category: Library (Lib)
Group: Python 2.6
>Status: Closed
>Resolution: Accepted
Priority: 5
Private: No
Submitted By: Erik Demaine (edemaine)
Assigned to: Nobody/Anonymous (nobody)
Summary: Let timeit accept functions

Initial Comment:
I see that there is a history of proposed (and
rejected) patches to allow timeit to see various module
global namespaces, etc.  But I'm surprised that no one
has proposed the obvious functional solution: allow the
arguments (particularly 'stmt') to be functions that
get called, instead of strings that get parsed and
executed.  This does increase the measurement overhead
slightly, adding in the function call, but in many
cases it is far more useful within scripts.  To time
some part of the code, you can replace a function call
'foo()' with 'timeit.Timer(foo).timeit()'.

I also propose helper functions for use within scripts:
timeit.timeit(...) is shorthand for
timeit.Timer(...).timeit(...), and timeit.repeat(...)
is shorthand for timeit.Timer(...).repeat(...).  Now
you can replace a function call 'foo()' with
'timeit.timeit(foo)', e.g., 'print "foo takes",
timeit.timeit(foo), "seconds"'.

Attached is a simple patch implementing both of these
changes.  Documentation would need updating too.

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>Comment By: Georg Brandl (gbrandl)
Date: 2007-03-13 19:32

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Reformatted the patch, bugfixed it, added documentation and committed as
rev. 54348.

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Comment By: Georg Brandl (gbrandl)
Date: 2006-08-03 18:12

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Please use four-space indents when contributing library
code. Perhaps unicode "stmt" arguments should also be
allowed. Perhaps other arguments should be checked with
callable() to exclude lists or something like that.

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