code: def translate_markers(pipfile_entry):
      
      if not isinstance(pipfile_entry, Mapping):
          raise TypeError("Entry is not a pipfile formatted mapping.")
      from .vendor.distlib.markers import DEFAULT_CONTEXT as marker_context
      from .vendor.packaging.markers import Marker
      from .vendor.vistir.misc import dedup
  
      allowed_marker_keys = ["markers"] + [k for k in marker_context.keys()]
      provided_keys = list(pipfile_entry.keys()) if hasattr(pipfile_entry, "keys") else []
      pipfile_markers = [k for k in provided_keys if k in allowed_marker_keys]
      new_pipfile = dict(pipfile_entry).copy()
      marker_set = set()
      if "markers" in new_pipfile:
          marker = str(Marker(new_pipfile.pop("markers")))
          if 'extra' not in marker:
              marker_set.add(marker)
      for m in pipfile_markers:
          entry = "{0}".format(pipfile_entry[m])
          if m != "markers":
              marker_set.add(str(Marker("{0}{1}".format(m, entry))))
              new_pipfile.pop(m)
      if marker_set:
          new_pipfile["markers"] = str(Marker(" or ".join(
              "{0}".format(s) if " and " in s else s
              for s in sorted(dedup(marker_set))
          ))).replace('"', "'")
      return new_pipfile
docs: Take a pipfile entry and normalize its markers
  
      Provide a pipfile entry which may have 'markers' as a key or it may have
      any valid key from `packaging.markers.marker_context.keys()` and standardize
      the format into {'markers': 'key == "some_value"'}.
  
      :param pipfile_entry: A dictionariy of keys and values representing a pipfile entry
      :type pipfile_entry: dict
      :returns: A normalized dictionary with cleaned marker entries