old_contents: """Functions for autoload generation."""
  
  
  import os
  import importlib
  
  from distance.prober import BytesProber, _load_impls_to_probers
  
  
  value_types = int, float, bytes, str, bool, type(None),
  sequence_types = tuple,
  mapping_types = dict,
  
  
  def write_autoload_module(module_name, impl_modules, keys):
      parent_modname, sep, mod_basename = module_name.rpartition('.')
      parent_mod = importlib.import_module(parent_modname)
      dirname = os.path.dirname(parent_mod.__file__)
      filename = os.path.join(dirname, mod_basename + ".py")
      content = _generate_autoload_content(module_name, impl_modules, keys)
      with open(filename, 'w') as f:
          f.write(content)
  
  
  def _generate_autoload_content(module_name, impl_modules, keys):
      text = [
          '''"""Auto-generated module for autoload definitions."""\n''',
          "\n",
          "# This is generated code. Do not modify.\n",
          "\n",
          "content_map = ",
      ]
      probers = {k: BytesProber(key=k) for k in keys}
      _load_impls_to_probers(probers, impl_modules)
      content = {k: p._generate_autoload_content()
                 for k, p in probers.items()}
      text.extend(_generate_source(content, 0))
      text.append("\n")
      return ''.join(text)
  
  
  def _generate_source(content, indent):
      typ = type(content)
      if typ in value_types:
          yield repr(content)
      elif typ in sequence_types:
          yield "("
          for i, v in enumerate(content):
              if i:
                  yield " "
              yield from _generate_source(v, indent + 1)
              yield ","
          yield ")"
      elif typ in mapping_types:
          yield "{\n"
          for k, v in content.items():
              yield "    " * (indent + 1)
              yield from _generate_source(k, indent + 1)
              yield ": "
              yield from _generate_source(v, indent + 1)
              yield ",\n"
          yield "    " * indent + "}"
      else:
          raise TypeError(f"Autolaod content of invalid type (a {typ.__name__!r}): {content}")
  
  
  # vim:set sw=4 et:
  
new_contents: """Functions for autoload generation."""
  
  
  import os
  import importlib
  
  from distance.prober import BytesProber, _load_impls_to_probers
  
  
  value_types = int, float, bytes, str, bool, type(None),
  sequence_types = tuple,
  mapping_types = dict,
  
  
  def write_autoload_module(module_name, impl_modules, keys):
      parent_modname, sep, mod_basename = module_name.rpartition('.')
      parent_mod = importlib.import_module(parent_modname)
      dirname = os.path.dirname(parent_mod.__file__)
      filename = os.path.join(dirname, mod_basename + ".py")
      content = _generate_autoload_content(module_name, impl_modules, keys)
      with open(filename, 'w') as f:
          f.write(content)
  
  
  def _generate_autoload_content(module_name, impl_modules, keys):
      text = [
          '''"""Auto-generated module for autoload definitions."""\n''',
          "\n",
          "# This is generated code. Do not modify.\n",
          "\n",
          "content_map = ",
      ]
      probers = {k: BytesProber(key=k) for k in keys}
      _load_impls_to_probers(probers, impl_modules)
      content = {k: p._generate_autoload_content()
                 for k, p in probers.items()}
      text.extend(_generate_source(content, 0))
      text.append("\n")
      return ''.join(text)
  
  
  def _generate_source(content, indent):
      typ = type(content)
      if typ in value_types:
          yield repr(content)
      elif typ in sequence_types:
          yield "("
          for i, v in enumerate(content):
              if i:
                  yield " "
              yield from _generate_source(v, indent + 1)
              yield ","
          yield ")"
      elif typ in mapping_types:
          yield "{\n"
          for k, v in content.items():
              yield "    " * (indent + 1)
              yield from _generate_source(k, indent + 1)
              yield ": "
              yield from _generate_source(v, indent + 1)
              yield ",\n"
          yield "    " * indent + "}"
      else:
          raise TypeError(f"Autoload content of invalid type (a {typ.__name__!r}): {content}")
  
  
  # vim:set sw=4 et:
  
subject: fix typo