code: def get_providers(self):
          
          if self.providers:
              return self.providers
  
          providers = dict()
          for provider in self.config:
              configurator = provider.lower() + '_config'
              if not hasattr(self, configurator):
                  err = 'Provider [{}] not recognized'.format(provider)
                  raise ValueError(err)
  
              provider_config = self.config[provider]
              configurator = getattr(self, configurator)
              providers[provider] = configurator(
                  id=provider_config.get('id'),
                  secret=provider_config.get('secret'),
                  scope=provider_config.get('scope'),
                  offline=provider_config.get('offline')
              )
  
          self.providers = providers
          return self.providers
docs: Get OAuth providers
          Returns a dictionary of oauth applications ready to be registered with
          flask oauth extension at application bootstrap.