old_contents: from flask import json
  import speaklater
  import datetime
  
  
  class JSONEncoder(json.JSONEncoder):
      """A JSONEncoder which always activates the for_json feature
      """
      def __init__(self, *args, **kwargs):
          kwargs["for_json"] = True
          super(JSONEncoder, self).__init__(*args, **kwargs)
  
      def default(self, o):
          if isinstance(o, speaklater._LazyString):
              return o.value
          if isinstance(o, set):
              return list(o)
          if isinstance(o, datetime.time):
              return str(o)
          return json.JSONEncoder.default(self, o)
  
new_contents: from flask import json
  import speaklater
  import datetime
  
  
  class JSONEncoder(json.JSONEncoder):
      """A JSONEncoder which always activates the for_json feature
      """
      def __init__(self, *args, **kwargs):
          kwargs["for_json"] = True
          super(JSONEncoder, self).__init__(*args, **kwargs)
  
      def default(self, o):
          if isinstance(o, speaklater._LazyString):
              return o.value
          if isinstance(o, (set, map)):
              return list(o)
          if isinstance(o, datetime.time):
              return str(o)
          return json.JSONEncoder.default(self, o)
  
subject: Handle map type in json_decoder