pylint fixes

Author: rmarren1

dash/development/validator.py

@@ -28,21 +28,22 @@ def _validator_options_with_unique_values(self, field, value):
             if not isinstance(option_dict, dict):
                 self._error(
                     field,
-                    "The option at index {} is not a dictionary!"\
+                    "The option at index {} is not a dictionary!"
                     .format(i)
                 )
             if 'value' not in option_dict:
                 self._error(
                     field,
-                    "The option at index {} does not have a 'value' key!"\
+                    "The option at index {} does not have a 'value' key!"
                     .format(i)
                 )
             curr = option_dict['value']
             if curr in values:
                 self._error(
                     field,
                     ("The options list you provided was not valid. "
-                     "More than one of the options has the value {}.".format(curr))
+                     "More than one of the options has the value {}."
+                     .format(curr))
                 )
             values.add(curr)