How can I count how many times this program has been executed in Python?

Question

    from itertools import permutations
    import random
    import pprint
    import timeit

    start_time = timeit.default_timer()
    count = 0
    def gird(board_size):

        print ("\n".join('# ' * inrange + 'Q ' + '# ' * (8-inrange-1)\

    for inrange in board_size) + "\n\n= = new board  \n")
    count+=1
    coloms  = range(8)
    for board_size in permutations(coloms):
        if 8 == len(set(board_size[inrange]+inrange for inrange in coloms)):
            if 8 == len(set(board_size[inrange]-inrange for inrange in coloms)):
                gird(board_size)


                elapsed = timeit.default_timer() - start_time
                print(elapsed)
                print(count)

I want to see how many times this code has run. I have to measure the search cost (number of iterations until it hits a minimum) and percentage of solved problems. This is an 8 queen problem.

Case of [XY Problem](http://meta.stackexchange.com/questions/66377/what-is-the-xy-problem)? — James Mills, Jun 21 '15 at 04:50
@JamesMills this is a 8 queen problem, i just want to how many time it does run till stops — odisho eivazi, Jun 21 '15 at 05:08
@IanAuld i already have that in my code, it does print one for whole thing — odisho eivazi, Jun 21 '15 at 05:17
Please correct the indentation of the code. It is confusing to read. — Obscure Geek, Jun 21 '15 at 05:42
I suggest you read [the style guide](https://www.python.org/dev/peps/pep-0008/) - for one thing, you're mixing implicit and (redundant) explicit logical line continuation. — jonrsharpe, Jun 21 '15 at 05:52
@odishoeivazi the XY problem refers to a problem in which the "solution" you're asking for isn't the one you want (it's the wrong way to solve the problem at hand) — Snakes and Coffee, Jun 21 '15 at 08:19

score 6 · Accepted Answer · answered Jun 21 '15 at 05:52

how can i count how many time program has been executed in python

The only way I can think of to satisfy your problem as you've described it rather then running your function N times is something like this:

Example:

from __future__ import print_function


import atexit
from os import path
from json import dumps, loads


def read_counter():
    return loads(open("counter.json", "r").read()) + 1 if path.exists("counter.json") else 0


def write_counter():
    with open("counter.json", "w") as f:
        f.write(dumps(counter))


counter = read_counter()
atexit.register(write_counter)


def main():
    print("I have been run {} times".format(counter))


if __name__ == "__main__":
    main()

Sample Run(s):

$ python foo.py
I have been run 1 times
$ python foo.py
I have been run 2 times
$ python foo.py
I have been run 3 times

However I must point out that this is not a very good way to "measure" the performance of a program or the functions you've written. You should be looking at things like hotshot or timeit or running your function internally a number of times and measuring the "right things".

So only way I can keep track of number of times a file has been run is not possible without writing to a file I guess? There can't be a like a permanent variable in the script that can keep track of this? — user3326078, Jul 27 '18 at 19:26
Writing a variable out to your source files is no different to writing to some other arbitrary file on disk. The hard part is that you have to parse your source file and correctly write a new version or you'll end up with `SyntaxError`(s) on your next run. — James Mills, Jul 29 '18 at 06:13

How can I count how many times this program has been executed in Python?

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