Capture the result of an IPython magic function

Question

I\'m trying to capture the resulting object of IPython Notebook magic function. Specifically %timeit

So the following code...

import tim         


        

Answer 1

In the source file you linked to, the docstring shows the options for running the timeit magic function; one of which is returning an object result:

-o: return a TimeitResult that can be stored in a variable to inspect
        the result in more details.

So, if you run

obj = %timeit -o somefunc()

obj will reference the result object that was returned (hint: use tab completion on the object, that will show you the attributes it has).

Answer 2

Complementing @dsemi's answer: Use -o to save the timeit result into a variable, e.g.:

obj = %timeit -o somefunc()

The docstring documentation of the TimeitResult when using tab completion shows the available attributes:

Object returned by the timeit magic with info about the run.

Contains the following attributes :

loops: (int) number of loops done per measurement
repeat: (int) number of times the measurement has been repeated
best: (float) best execution time / number
all_runs: (list of float) execution time of each run (in s)
compile_time: (float) time of statement compilation (s)

Answer 3

An example of consuming the TimeItResult output:

myarray = (3,2,1)
sorttime = %timeit -n1 -r3 -o myarray.sort() 
print(sorttime.best)

Look here for the other TimeItResult attributes: https://ipython.org/ipython-doc/2/api/generated/IPython.core.magics.execution.html