old_contents: from warnings import warn
  from os import path
  import json
  
  
  class Substitution:
      def __init__(self, local_path, language="en"):
          file_path = path.join(local_path, language, "substitutions.json")
          try:
              with open(file_path) as f:
                  self.substitutions = json.load(f)
          except FileNotFoundError:
              warn("substitution for language `{}` not Implemented".format(language),
                   ResourceWarning)
              self.substitutions = {}
          if type(self.substitutions) != dict:
              raise TypeError("Expected dictionary `{}` in but found {}".format(
                  file_path, type(self.substitutions)))
  
      def __getattr__(self, item):
          try:
              return self.substitutions[item]
          except KeyError:
              warn("substitutions does not have {}".format(item), Warning)
          return {}
  
new_contents: from warnings import warn
  from os import path
  import json
  
  
  class Substitution:
      def __init__(self, local_path, language="en"):
          file_path = path.join(local_path, language, "substitutions.json")
          try:
              with open(file_path) as f:
                  self.substitutions = json.load(f)
          except FileNotFoundError:
              warn("substitution for language `{}` not Implemented".format(language),
                   ResourceWarning)
              self.substitutions = {}
          if not isinstance(self.substitutions, dict):
              raise TypeError("Expected dictionary `{}` in but found {}".format(
                  file_path, type(self.substitutions)))
  
      def __getattr__(self, item):
          try:
              return self.substitutions[item]
          except KeyError:
              warn("substitutions does not have {}".format(item), Warning)
          return {}
  
subject: refactor code