CODEWITHSUNDEEP
pythonpython-3.xpython-2.7
Jon Doe
Jon Doe

Reputation: 21

How to print python execution time with specific numbers from a random list to output both time and the random number generated?

I have been trying to calculate Python's execution time with this code, I've got the time but I don't know which number is being used from the list to be measured any help with how to print it would be helpful and much appreciated

import time
import random

def algorithm(c):
    b = []
    for i in c:
        b.append(i*2)

def data():
    c=[]
    for x in range(10000000):
        c.append(random.randint(1,100000))
timer(c)

def timer(c):
    time_start = time.time()
    algorithm(c)
    time_end = time.time()
    time_taken = time_end - time_start
    print(time_taken)
data()

Upvotes: 2

Views: 43

Answers (3)

Patrick Artner
Patrick Artner

Reputation: 51683

You could leverage the timeit module:

import timeit

codeToExecute = """

def algorithm(c):
    b = []
    for i in c:
        b.append(i*2)

algorithm(range(500))
"""

# 
setupCode = "pass"

meas =  timeit.timeit(stmt=codeToExecute, setup=setupCode, number=100000)

print(meas)

Output:

17.0021979809

This will execute the given function number times and print your time in seconds for it. You can use the setup to provide "data" or "imports" to your test that only has to be executed once and not on each run.

Upvotes: 1

Jon Doe
Jon Doe

Reputation: 21

import time
import random
import timeit
randomNumbersAndTime = {}
def algorithm(c):

    b = []
    for i in c:
        b.append(i*2)

def data():
    c=[]
    setupCode = "pass"
    print ("Random Number , Time Taken to Generate\n")
    for x in range(10000000):
        codeToExecute = str(random.randint(1,100000))
        randomNumb = timeit.timeit(stmt=codeToExecute, setup=setupCode, number=1000000)
        randomNumbersAndTime[codeToExecute] =  randomNumb

        for randomNumber in randomNumbersAndTime.keys() :            
            print ("{0} , {1} \n".format(randomNumber,randomNumbersAndTime[randomNumber]))

data()

Upvotes: 0

toheedNiaz
toheedNiaz

Reputation: 1445

I believe your code is fine you just need to restructure the code a bit.

import time
import random
import timeit
randomNumbersAndTime = {}
def algorithm(c):

    b = []
    for i in c:
        b.append(i*2)

def data():
    c=[]
    setupCode = "pass"
    print ("Random Number , Time Taken to Generate\n")
    for x in range(10000000):
        codeToExecute = str(random.randint(1,100000))
        randomNumb = timeit.timeit(stmt=codeToExecute, setup=setupCode, number=1000000)
        randomNumbersAndTime[codeToExecute] =  randomNumb

        for randomNumber in randomNumbersAndTime.keys() :            
            print ("{0} , {1} \n".format(randomNumber,randomNumbersAndTime[randomNumber]))

data()

this will give you the desired results.

This is a sample output :

Random Number , Time Taken to Generate

44806 , 0.433061423485 

44806 , 0.433061423485 

38079 , 0.44243301193 

44806 , 0.433061423485 

66713 , 0.435066187359 

38079 , 0.44243301193 

85426 , 0.422678350883 

44806 , 0.433061423485 

66713 , 0.435066187359 

38079 , 0.44243301193 

85426 , 0.422678350883

I hope i understood correctly .

Upvotes: 1

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