code: def edit_config(filename, settings, dry_run=False):
      """Edit a configuration file to include `settings`
  
      `settings` is a dictionary of dictionaries or ``None`` values, keyed by
      command/section name.  A ``None`` value means to delete the entire section,
      while a dictionary lists settings to be changed or deleted in that section.
      A setting of ``None`` means to delete that setting.
      """
      log.debug("Reading configuration from %s", filename)
      opts = configparser.RawConfigParser()
      opts.optionxform = lambda x: x
      opts.read([filename])
      for section, options in settings.items():
          if options is None:
              log.info(
                  "Deleting section [%s] from %s", section, filename
              )
              opts.remove_section(section)
          else:
              if not opts.has_section(section):
                  log.debug(
                      "Adding new section [%s] to %s", section, filename
                  )
                  opts.add_section(section)
              for option, value in options.items():
                  if value is None:
                      log.debug(
                          "Deleting %s.%s from %s",
                          section,
                          option,
                          filename,
                      )
                      opts.remove_option(section, option)
                      if not opts.options(section):
                          log.info(
                              "Deleting empty [%s] section from %s",
                              section,
                              filename,
                          )
                          opts.remove_section(section)
                  else:
                      log.debug(
                          "Setting %s.%s to %r in %s",
                          section,
                          option,
                          value,
                          filename,
                      )
                      opts.set(section, option, value)
  
      log.info("Writing %s", filename)
      if not dry_run:
          with open(filename, "w") as f:
              opts.write(f)
  
file_path: catboost/contrib/python/setuptools/py3/setuptools/command/setopt.py
imports: from distutils.util import convert_path
  from distutils import log
  from distutils.errors import DistutilsOptionError
  import distutils
  import os
  import configparser
  from setuptools import Command
label_desc: Use image node_id 2 for calling a global function with example usage: edit_config(filename, settings, dry_run) without return types