I understand the concept of what timeit
does but I am not sure how to implement it in my code.
How can I compare two functions, say insertion_sort
and tim_sort
, with timeit
?
The “%timeit” is a line magic command in which the code consists of a single line or should be written in the same line for measuring the execution time. In the “%timeit” command, the particular code is specified after the “%timeit” is separated by a space.
timeit is used to measure the execution time for the small python code snippets. This module runs the code a million times (by default) to get the most precise value for the code execution time.
timeit() runs the setup statement one time, then calls the main statement count times. It returns a single floating point value representing the cumulative amount of time spent running the main statement.
If you want to use timeit
in an interactive Python session, there are two convenient options:
Use the IPython shell. It features the convenient %timeit
special function:
In [1]: def f(x): ...: return x*x ...: In [2]: %timeit for x in range(100): f(x) 100000 loops, best of 3: 20.3 us per loop
In a standard Python interpreter, you can access functions and other names you defined earlier during the interactive session by importing them from __main__
in the setup statement:
>>> def f(x): ... return x * x ... >>> import timeit >>> timeit.repeat("for x in range(100): f(x)", "from __main__ import f", number=100000) [2.0640320777893066, 2.0876040458679199, 2.0520210266113281]
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