code: def verify(self, verifier):
          "Verify an OAuth token"
  
          # Construct the credentials for the verification request
          oauth = OAuth1(
              self.consumer_key,
              client_secret=self.consumer_secret,
              resource_owner_key=self.oauth_token,
              resource_owner_secret=self.oauth_token_secret,
              verifier=verifier,
              rsa_key=self.rsa_key,
              signature_method=self._signature_method
          )
  
          # Make the verification request, gettiung back an access token
          url = self.base_url + ACCESS_TOKEN_URL
          headers = {'User-Agent': self.user_agent}
          response = requests.post(url=url, headers=headers, auth=oauth)
          self._process_oauth_response(response)
          self.verified = Truf verify(self, verifier):
          "Verify an OAuth token"
  
          # Construct the credentials for the verification request
          oauth = OAuth1(
              self.consumer_key,
              client_secret=self.consumer_secret,
              resource_owner_key=self.oauth_token,
              resource_owner_secret=self.oauth_token_secret,
              verifier=verifier,
              rsa_key=self.rsa_key,
              signature_method=self._signature_method
          )
  
          # Make the verification request, gettiung back an access token
          url = self.base_url + ACCESS_TOKEN_URL
          headers = {'User-Agent': self.user_agent}
          response = requests.post(url=url, headers=headers, auth=oauth)
          self._process_oauth_response(response)
          self.verified = True
docs: Verify an OAuth token