How to switch the configuration file to be read by Python


It is a method to change the configuration file to be read by adding an option when executing a program in Python.

file organization

├── config
│   ├── config_dev.ini
│   └── config_prod.ini

setting file


USER = "user_prod"
PWD = "password_prod"


USER = "user_dev"
PWD = "password_dev"

Executable file

import argparse
import configparser

def parser_conf():
    parser = argparse.ArgumentParser()
        help="use prod config")
        help="use dev config")
    args = parser.parse_args()
    config = configparser.ConfigParser()
        config_file_name = "config/config_prod.ini"
        config_file_name = "config/config_dev.ini", encoding='utf-8')
    return config

if __name__ == '__main__':
    config = parser_conf()

Execution result

$ python -d

$ python --dev

$ python -p

$ python --prod

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