I want to calculate the execution time of code of various languages such as java, python, javascript. How to get the execution time of these codes. Is there any tool available in python packages or any other to calculate the execution time by passing the file(any file java or python) path. Please share your suggestion.
I am aware of getting execution time by using time module in python code. How to execute Javascript and java codes in python and get the execution time in common function.
I tried in below method.
import time
def get_exectime(file_path): # pass path of any file python,java,javascript, html, shell
start_time=time.time()
# execute the file given here. How to execute all file types here?
end_time=time.time()
exec_time=end_time-start_time
print(exec_time)
Is there any other method available to achieve this?
You can do that using the time module:
import time
start_time = time.time()
# your code
end_time = time.time()
print("Total execution time: {} seconds".format(end_time - start_time))
Contrary to other answers, I suggest using timeit, which was designed with the very purpose of measuring execution times in mind, and can also be used as a standalone tool: https://docs.python.org/3/library/timeit.html
It will give you not only the real time of execution, but also CPU time used, which is not necessarily the same thing.
import time
start_time = time.time()
#code here
print("--- %s seconds ---" % (time.time() - start_time))
I think you might need time module. This is the simplest way to measure execution time inn python. Take a look at my example.
import time
start_time = time.time()
a=1
for i in range(10000):
a=a+1
end_time = time.time()
total_time = end_time-start_time
print("Execution time in seconds: %s ",total_time)
Output:
Execution time in seconds: %s 0.0038547515869140625
>>>
First install "humanfriendly" package in python by opening Command Prompt (CMD) as administrator and type -
pip install humanfriendly
Code:
from humanfriendly import format_timespan
import time
begin_time = time.time()
# Put your code here
end_time = time.time() - begin_time
print("Total execution time: ", format_timespan(end_time))
Output:
Related
I am working on a Python script that is going to be run in the command line. The idea is to get a command from the user, run it and then provide the wall-clock time and the CPU time of the command provided by the user. See code below.
#!/usr/bin/env python
import os
import sys
def execut_cmd(cmd_line):
utime = os.system('time '+cmd_line)
# Here I would like to store the wall-clock time in the Python variable
# utime.
cputime = os.system('time '+cmd_line)
# Here the CPU time in the cputime variable. utime and cputime are going to
# be used later in my Python script. In addition, I would like to silence the
# output of time in the screen.
execut_cmd(sys.argv[1])
print ('Your command wall-clock time is '+utime)
print ('Your command cpu time is '+ cputime)
How can I accomplish this? Also, if there is a better method than using 'time' I am open to try it.
From Python Documentation for wall time:
... On Windows, time.clock() has microsecond granularity, but time.time()’s granularity is 1/60th of a second. On Unix, time.clock() has 1/100th of a second granularity, and time.time() is much more precise. On either platform, default_timer() measures wall clock time, not the CPU time. This means that other processes running on the same computer may interfere with the timing.
For wall time you can use timeit.default_timer() which gets the timer with best granularity described above.
From Python 3.3 and above you can use time.process_time() or time.process_time_ns() . Below is the documentation entry for process_time method:
Return the value (in fractional seconds) of the sum of the system and user CPU time of the current process. It does not include time elapsed during sleep. It is process-wide by definition. The reference point of the returned value is undefined, so that only the difference between the results of consecutive calls is valid.
To provide the current wall time, time.time() can be used to get the epoch time.
To provide the elapsed wall time, time.perf_counter() can be used at the start and end of the operation with the difference in results reflecting the elapsed time. The results cannot be used to give an absolute time as the reference point is undefined. As mentioned in other answers, you can use timeit.default_time() but this will always return time.perf_counter() as of python 3.3
To provide the elapsed CPU time, time.process_time() can be used in a similar manner to time.perf_counter(). This will provide the sum of the system and user CPU time.
With the little time I have spent using the timing functions on Linux systems. I have observed that
timeit.default_timer() and time.perf_counter() numerically gives the same result.
Also, when measuring the duration of a time interval, timeit.default_timer(), time.perf_counter() and time.time() all virtually gives the same result. So this means that any of these functions can be used to measure the elapsed time or wall time for any process.
I think I should also mention that the difference between time.time() and others is that it gives the current time in seconds from epoch which is from 1 January 1970 12:00AM
time.clock() and time.process_time() also gives the same numerical value
time.process_time() is most suitable for measuring the cpu time since time.clock() is already deprecated in python 3
How do you create a timer in python? My project is a speed typing test and the timer is there to time the length it takes the user to type. The first task the user types is the alphabet, as fast as they can and then the second task is to type as quickly as possible again for a group of words in set in a random order
The time module
The time module allows the user to directly get the time, in seconds, since 1970 (See: https://docs.python.org/3/library/time.html). This means that we can subtract the time before from time after to see how long it has been, namely how long it took the user to finish the typing test. From there, it is as easy as printing the result. You can round the time using int to get a purely seconds result without milliseconds.
The code
# Import the time library
import time
# Calculate the start time
start = time.time()
# Code here
# Calculate the end time and time taken
end = time.time()
length = start - end
# Show the results : this can be altered however you like
print("It took", start-end, "seconds!")
You can use the build in time libary:
import time
strToType="The cat is catching a mouse."
start_time = time.perf_counter()
print("Type: '"+strToType+"'.")
typedstring=input()
if typedstring==strToType:
end_time = time.perf_counter()
run_time = end_time - start_time
print("You typed '"+strToType+"' in "+str(run_time)+" seconds.")
By implementing the line
start_time = time.time()
at the start of my code and
print("%f seconds" % (time.time() - start_time))
at the end of my code I have been measuring the performance of my script (which can take hours to run). I have heard that this may not be the best method due to it being inaccurate. How accurate is it and is there a better alternative?
Try this, timeit from the standard library:
from timeit import default_timer as timer
start_time = timer()
end_time = timer()
print(end_time - start_time)
logger.info("Duration was {}".format(end_time - start_time))
The documentation for default_timer is of interest, and should really be quoted in the answer: "Define a default timer, in a platform-specific manner. On Windows, time.clock() has microsecond granularity, but time.time()’s granularity is 1/60th of a second. On Unix, time.clock() has 1/100th of a second granularity, and time.time() is much more precise. On either platform, default_timer() measures wall clock time, not the CPU time. This means that other processes running on the same computer may interfere with the timing."
Try usng datetime
from datetime import datetime
startTime = datetime.now()
#CODE
print("Time taken:",datetime.now() - startTime)
I have two python scripts Des.py and DDes.py and I want to calculate their execution time difference using a sage script.
I don't really see why you would want to do this with sage. Just use the time module:
import time
Start_Time = time.time()
#execute script
Execution_Time = time.time() - Start_Time
Execution_Time gives the total execution time in seconds.
Regards,
Harm
Through a python program, sending a command to specific device and that device is responding on the behalf of the command. Now I have to calculate timing between send and receive (means how much time taking to response of the command ).
Ex.
device ip - 10.0.0.10
transmitting 'L004' command through our local system to 10.0.10.
Receving 'L' response from 10.0.0.10.
So now I have to calculate time difference between start time and end time.
Please provide an API through that I can calculate.
import time
t1 = time.time()
# some time-demanding operations
t2 = time.time()
print "operation took around {0} seconds to complete".format(t2 - t1)
time.time() returns the current unix timestamp as a float number. Store this number at given points of your code and calculate the difference. You will get the time difference in seconds (and fractions).
The timeit standard module makes it easy to do this kind of task.
Just Use "timeit" module. It works with both Python 2 And Python 3
import timeit
start = timeit.default_timer()
#ALL THE PROGRAM STATEMETNS
stop = timeit.default_timer()
execution_time = stop - start
print("Program Executed in "+execution_time) #It returns time in sec
It returns in Seconds and you can have your Execution Time. Simple but you should write these in Main Function which starts program execution. If you want to get the Execution time even when you get error then take your parameter "Start" to it and calculate there like
`def sample_function(start,**kwargs):
try:
#your statements
Except:
#Except Statements
stop = timeit.default_timer()
execution_time = stop - start