Ytukyg

I would like to change hardcoded values in my code. I would like the code to replace and change hardcoded values based on the number of times it runs. Beginning with:

x=1

The next time, after I run it, in the code itself, I would like to see in the code editor:

x=2

It will automatically change the values of the code without human input, so the third time its run:

x=3

And this is all done just by the script running, no human interaction whatsoever. Is there an easy way?

You can simply write to a well-defined auxiliary file:

# define storage file path based on script path (__file__)

import os

counter_path = os.path.join(os.path.dirname(__file__), 'my_counter')

# start of script - read or initialise counter

try:

    with open(counter_path, 'r') as count_in:

        counter = int(count_in.read())

except FileNotFoundError:

    counter = 0



print('counter =', counter)



# end of script - write new counter

with open(counter_path, 'w') as count_out:

        count_out.write(str(counter + 1))

This will store an auxiliary file next to your script, which contains the counter verbatim.

 $ python3 test.py

 counter = 0

 $ python3 test.py

 counter = 1

 $ python3 test.py

 counter = 2

 $ cat my_counter

 3

Use config parser to store run counter in a file

import configparser



config = configparser.ConfigParser()

config_fn = 'program.ini'



try:

    config.read(config_fn)

    run_counter = int(config.get('Main', 'run_counter'))

except configparser.NoSectionError:

    run_counter = 0

    config.add_section('Main')

    config.set('Main', 'run_counter', str(run_counter))

    with open(config_fn, 'w') as config_file:

        config.write(config_file)



run_counter += 1

print("Run counter {}".format(run_counter))

config.set('Main', 'run_counter', str(run_counter))

with open(config_fn, 'w') as config_file:

        config.write(config_file)