How to Read, Update and Delete Options

Explore how to read, update, and delete configuration options in Python using the configparser module. Learn to handle config files by creating self-contained functions that read values, modify settings, and remove entries, while following best coding practices.

We'll cover the following...

Python

import configparser
import os
def createConfig(path):
    """
    Create a config file
    """
    config = configparser.ConfigParser()
    config.add_section("Settings")
    config.set("Settings", "font", "Courier")
    config.set("Settings", "font_size", "10")
    config.set("Settings", "font_style", "Normal")
    config.set("Settings", "font_info",
               "You are using %(font)s at %(font_size)s pt")
 
    with open(path, "w") as config_file:
        config.write(config_file)
def crudConfig(path):
    """
    Create, read, update, delete config
    """
    if not os.path.exists(path):
        createConfig(path)
    config = configparser.ConfigParser()
    config.read(path)
    # read some values from the config
    font = config.get("Settings", "font")
    font_size = config.get("Settings", "font_size")
    # change a value in the config
    config.set("Settings", "font_size", "12")
    # delete a value from the config
    config.remove_option("Settings", "font_style")
    # write changes back to the config file
    with open(path, "w") as config_file:
        config.write(config_file)
if __name__ == "__main__":
    path = "settings.ini"
    crudConfig(path)