def _set_in_exp(self, v, load=False):
    """
    Setter method for in_exp, mapped from YANG variable /qos_mpls/map/inexp_outexp/in_exp (list)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_in_exp is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_in_exp() directly.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=YANGListType("in_exp_in_values",in_exp.in_exp, yang_name="in-exp", rest_name="in-exp", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='in-exp-in-values', extensions={u'tailf-common': {u'info': u'Map Inexp value to Outexp value', u'cli-suppress-mode': None, u'cli-incomplete-no': None, u'cli-suppress-list-no': None, u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'callpoint': u'QosMplsInexpOutexpCallpoint'}}), is_container='list', yang_name="in-exp", rest_name="in-exp", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Map Inexp value to Outexp value', u'cli-suppress-mode': None, u'cli-incomplete-no': None, u'cli-suppress-list-no': None, u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'callpoint': u'QosMplsInexpOutexpCallpoint'}}, namespace='urn:brocade.com:mgmt:brocade-qos-mpls', defining_module='brocade-qos-mpls', yang_type='list', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """in_exp must be of a type compatible with list""",
          'defined-type': "list",
          'generated-type': """YANGDynClass(base=YANGListType("in_exp_in_values",in_exp.in_exp, yang_name="in-exp", rest_name="in-exp", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='in-exp-in-values', extensions={u'tailf-common': {u'info': u'Map Inexp value to Outexp value', u'cli-suppress-mode': None, u'cli-incomplete-no': None, u'cli-suppress-list-no': None, u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'callpoint': u'QosMplsInexpOutexpCallpoint'}}), is_container='list', yang_name="in-exp", rest_name="in-exp", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Map Inexp value to Outexp value', u'cli-suppress-mode': None, u'cli-incomplete-no': None, u'cli-suppress-list-no': None, u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'callpoint': u'QosMplsInexpOutexpCallpoint'}}, namespace='urn:brocade.com:mgmt:brocade-qos-mpls', defining_module='brocade-qos-mpls', yang_type='list', is_config=True)""",
        })

    self.__in_exp = t
    if hasattr(self, '_set'):
      self._set()