How do you calculate program run time in python?
Question:
How do you calculate program run time in python?
Answers:
You might want to take a look at the timeit module:
http://docs.python.org/library/timeit.html
or the profile module:
http://docs.python.org/library/profile.html
There are some additionally some nice tutorials here:
http://www.doughellmann.com/PyMOTW/profile/index.html
http://www.doughellmann.com/PyMOTW/timeit/index.html
And the time module also might come in handy, although I prefer the later two recommendations for benchmarking and profiling code performance:
@JoshAdel covered a lot of it, but if you just want to time the execution of an entire script, you can run it under time on a unix-like system.
kotai:~ chmullig$ cat sleep.py
import time
print "presleep"
time.sleep(10)
print "post sleep"
kotai:~ chmullig$ python sleep.py
presleep
post sleep
kotai:~ chmullig$ time python sleep.py
presleep
post sleep
real 0m10.035s
user 0m0.017s
sys 0m0.016s
kotai:~ chmullig$
Quick alternative
import timeit
start = timeit.default_timer()
#Your statements here
stop = timeit.default_timer()
print('Time: ', stop - start)
I don’t know if this is a faster alternative, but I have another solution –
from datetime import datetime
start=datetime.now()
#Statements
print datetime.now()-start
How do you calculate program run time in python?
You might want to take a look at the timeit module:
http://docs.python.org/library/timeit.html
or the profile module:
http://docs.python.org/library/profile.html
There are some additionally some nice tutorials here:
http://www.doughellmann.com/PyMOTW/profile/index.html
http://www.doughellmann.com/PyMOTW/timeit/index.html
And the time module also might come in handy, although I prefer the later two recommendations for benchmarking and profiling code performance:
@JoshAdel covered a lot of it, but if you just want to time the execution of an entire script, you can run it under time on a unix-like system.
kotai:~ chmullig$ cat sleep.py
import time
print "presleep"
time.sleep(10)
print "post sleep"
kotai:~ chmullig$ python sleep.py
presleep
post sleep
kotai:~ chmullig$ time python sleep.py
presleep
post sleep
real 0m10.035s
user 0m0.017s
sys 0m0.016s
kotai:~ chmullig$
Quick alternative
import timeit
start = timeit.default_timer()
#Your statements here
stop = timeit.default_timer()
print('Time: ', stop - start)
I don’t know if this is a faster alternative, but I have another solution –
from datetime import datetime
start=datetime.now()
#Statements
print datetime.now()-start