How to measure time of program execution and store that inside a variable up vote 34 down vote favorite 12. To get the time you can also use date +%s.%N, so take it before and after execution and calculate the diff: START=$(date +%s.%N) command END Python - How to calculate the difference of two time strings with timezone in Python Results 1 to 1 of 1 Thread: Python - How to calculate the difference of two time strings with timezone in Python LinkBack. How to calculate Execution time in milliseconds? What about clock function? Profiling execution time in Python. Profiling is the process of monitoring your code as it runs in order to figure out which bits of it take the most time. Calculate time for execution of statement in python?. How exactly do you think you'll show a gauge for a fraction of 0.00107097625732 seconds for example, which is a reasonably big statement to evaluate? Python Programming Count execution time Thread: Count execution time Share This Thread Tweet This + 1 this Post To Linkedin Subscribe to this Thread. On Thu, 01:11:58 am Vineeth Rakesh wrote: > Hello all, > > I want to calculate the execution time of a program. If you have RepAdd in a file 'test.py', then from the command line: python -m timeit -s 'from test import RepAdd' 'RepAdd(10)' should. Thisis a vital step if we want to make a program run faster. In general, it is very hard to look at a program and guesswhich parts of it take the most time. There’s no point trying to optimize a program before we know this – if a particular function only takes a tiny amount of the total run time, then we will be wasting our time trying to speed it up. How to profile your code: first import the c. Profile module. import c. Profile. then write a function which executes your code, and call c. Profile. run() with your function name as a string as its argument. This is a good candidatefor profiling, because the code is split up into several functions. Note that in the run() function we translate the same piece of DNA 1. This is because the translation function is already very quick – we want the script to run for at least a couple of seconds in order to get accurate profiling results, otherwise the results can be biased by overhead from starting/stopping the script. Profiling results can vary considerably between computers, operating systems, versions of Python, etc. This includes the input data – try to make your profiling runs as similar as possible to your real- life datasets. As we expect, translate. This is probably the most important stat. Functions that take up a large total time are the best ones to try to speed up, as they will have the most effect on the overall program speed. However, this function is so simple that it’s not really obvious how we could speed it up! The next function is reverse. This is quite a complicated function, so we could experiment with differentways of writing it in order to speed it up. Interestingly, the program spends a long time in the list. Python. We cannot try to speed this up (it is probably very efficient already, since it is a core part of the Python language) but maybe we could try to rewrite our code to use fewer list append operations. Let’s look at another example – this time we will use the sequence similarity search program from day one. Again, we will write a run() method that carries out the same search many times, in order to get an accurate reading. Let’s try tospeed up extend. Look at the first few lines of the function: def extend. We know that thesubject sequence and query sequence are not going to change inside this function so let’s store the length in variables thenwe only have to calculate them once: def extend. How does this affect the profiling results?
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