Now we’re ready to learn how to read the config file, update its options and even how to delete options. In this case, it’s easier to learn by actually writing some code! Just add the following function to the code that you wrote above.

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)

How to Read, Update and Delete Options