old_contents: import os
  import yaml
  
  config_path = ''  # Custom config filepath
  # ^ For example: '/home/arthurdent/configs/l293d.yaml'
  
  # If no custom path, user's home directory is used
  if not config_path:
      # Get user home location and append filename.extension
      config_path = os.path.expanduser('~') + '/l293d-config.yaml'
  
  config_path_exists = os.path.exists(config_path)
  if (not config_path_exists):
      # Load default config
      default_file_path = str(os.path.realpath(__file__))
      # Get path of this file, and remove filename
      while default_file_path[-1] != '/':
          default_file_path = default_file_path[:-1]
      # Add default config filename
      default_file_path += 'default_l293d-config.yaml'
      # Open default config file
      default_file = open(default_file_path, 'r')
      # Read file to config contents, then close
      config_contents = default_file.read()
      default_file.close()
  
      # Write to user config at config path
      new_file = open(config_path, 'w')
      new_file.write(config_contents)
      new_file.close()
  
  # https://martin-thoma.com/configuration-files-in-python/#yaml
  # Open and load YAML config file
  try:
      # Open config file and load as YAML
      with open(config_path, 'r') as ymlfile:
          config = yaml.load(ymlfile)
  except:
      raise IOError('Error loading config from: {}. Check config exists.'.format(
          config_path))
  
  # Assign loaded YAML to config variables
  # These are loaded outside of config.py as, e.g. config.verbose
  verbose = config['verbose']
  test_mode = config['test_mode']
  pin_numbering = config['pin_numbering']
  
new_contents: import os
  import yaml
  
  config_path = ''  # Custom config filepath
  # ^ For example: '/home/arthurdent/configs/l293d.yaml'
  
  # If no custom path, user's home directory is used
  if not config_path:
      # Get user home location and append filename.extension
      config_path = os.path.expanduser('~') + '/l293d-config.yaml'
  
  config_path_exists = os.path.exists(config_path)
  if not config_path_exists:
      # Load default config
      default_file_path = str(os.path.realpath(__file__))
      # Get path of this file, and remove filename
      while default_file_path[-1] != '/':
          default_file_path = default_file_path[:-1]
      # Add default config filename
      default_file_path += 'default_l293d-config.yaml'
      # Open default config file
      default_file = open(default_file_path, 'r')
      # Read file to config contents, then close
      config_contents = default_file.read()
      default_file.close()
  
      # Write to user config at config path
      new_file = open(config_path, 'w')
      new_file.write(config_contents)
      new_file.close()
  
  # https://martin-thoma.com/configuration-files-in-python/#yaml
  # Open and load YAML config file
  try:
      # Open config file and load as YAML
      with open(config_path, 'r') as ymlfile:
          config = yaml.load(ymlfile)
  except:
      raise IOError('Error loading config from: {}. Check config exists.'.format(
          config_path))
  
  # Assign loaded YAML to config variables
  # These are loaded outside of config.py as, e.g. config.verbose
  verbose = config['verbose']
  test_mode = config['test_mode']
  pin_numbering = config['pin_numbering']
  
subject: Remove redundant parenthesis