code: def get_post_data(self):
          '''
          Get all the arguments from post request. Only get the first argument by default.
          '''
          post_data = {}
          for key in self.request.arguments:
              post_data[key] = self.get_arguments(key)[0]
          return post_datf get_post_data(self):
          '''
          Get all the arguments from post request. Only get the first argument by default.
          '''
          post_data = {}
          for key in self.request.arguments:
              post_data[key] = self.get_arguments(key)[0]
          return post_data
docs: Get all the arguments from post request. Only get the first argument by default.