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Questions tagged [timeit]

A Python built-in module for measuring execution time of small code snippets.

A Python built-in module for measuring execution time of small code snippets. It provides a Timer class which can be used to measure execution times.

According to the documentation, it "avoids a number of common traps for measuring execution times".

Documentation: https://docs.python.org/3/library/timeit.html

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Timeit not returning actual time

I am testing an implementation of Heap using the timeit module, but I can't get it to print time in float: def testCustomHeapStartUp(*args): h = MinHeap(args[0]) return True if __name__ == "__main__": for i in range(3): testList…
Liumx31
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Don't understand how Timeit works. Need an explanation

I don't understand how I get timeit to work. I've made an example, where I want to calculate the difference in processing times. I would be eternally grateful if someone have the time to break it down for me. Basse def main(): prod_nums =…
user4016255
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How to use timeit for multiple values

I've written a code which solves the linear equation Ax=b using LU decomposition and I am asked to compute the running times of this for various dimensions of the matrix A. I can compute the running time of the code, be it for given A and b or for…
Drn004
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Global name "x" not defined using timeit

I've got a simple Fibonacci function that uses memoisation and it works just fine on its own. However when I want to time it using timeit, I get "NameError: global name 'memo' is not defined", even though it is. #!/usr/bin/python import sys import…
imgoingmad
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Unable to pass list to this Python function when using timeit

I wrote a small script to generate the running times of a function with varying input. My intent was to plot the numbers and prove to myself that the function indeed had a quadratic running time. Here's the code: import timeit seq = [875011,…
ankush981
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NameError for using timeit in python

I got NameError when I try to run this codes."global name j is not defined". How can I fix it? def test(j): for i in range(j): j = i**2 if __name__=='__main__': from timeit import Timer j = 30 t = Timer("test(j)","from…
masti
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Timing del operator on dictionaries, KeyError?

I've been working on a python assignment for a class I'm taking and I just can't figure out how to get past this KeyError. I'm trying to time the use of the del operator on dictionaries in python, here is my code: from timeit import Timer def…
Miguel Castorena
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Profiling Serial communication using timeit

I need to communicate with an embedded system over RS232. For this I want to profile the time it takes to send a response to each command. I've tested this code using two methods: datetime.now() and timeit() Method #1 def resp_time(n,msg): …
Kshitij Agrawal
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getting inconsistent results when trying to find string's length in python (using timeit)

I'm trying to find the length of a string by comparing the string to different strings. Python compares strings as follows: if (op == Py_EQ) { /* Supporting Py_NE here as well does not save much time, since Py_NE is rarely used. */ …
pystudent
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timeit module hangs with bigger values of pow()

I am trying to calculate the time taken by pow function to calculate exponential modulo. With the values of g,x,p hardcoded the code gives error and with the values placed in the pow function, the code hangs. The same piece of code is working…
fahad
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How to call this function

How to measure the time of this code with timeit?(all functions have been defined) for i in range (1,10): bh = BinHeap() facc=[random.randrange(1,101,1) for _ in range (10+i)] bh.buildHeap(facc) …
christ
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I am trying to calculate the time of a code using timeit module in python but could not possible do it

I have taken the setup variable as setup='''import subprocess \ from java_compile import func ''' Definition of function whose time i want to measure is: def func(uid,ppid,j,fn): global fwrite curr_working_path=os.getcwd() …
Vipul
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Strange results when measuring Radix sort

I am measuring time of execution of Radix and Counting sort using timeit module. I am using 100 sets of random integers lying on the interval <0; 1000000>. All integers are unique within the set. First set consists of 10000 integers, last set…
jirinovo
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Why is using a local constant faster than accessing a global constant

In [8]: %paste PRIME = 16777619 UINT32_MAX = 4294967295 # (2 ** 32) - 1 def fnv1a_32_global(string): hashval = 2166136261 for character in string: hashval ^= ord(character) hashval = (hashval * PRIME) & UINT32_MAX return…
Lelouch Lamperouge
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How to pass a method to timeit in python?

So I am working on comparing the iterative and recursive ways of finding fibonacci numbers. I wanted to pass them both into timeit, but am having trouble formatting my calls to timeit. Good someone give me a little guidance please? Thanks! …
T.Def
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