fix: improve garbage collection via #698

Author: lepture

authlib/oauth1/client.py

@@ -170,3 +170,6 @@ def parse_response_token(self, status_code, text):
     @staticmethod
     def handle_error(error_type, error_description):
         raise ValueError(f'{error_type}: {error_description}')
+
+    def __del__(self):
+        del self.session

authlib/oauth2/auth.py

@@ -103,3 +103,7 @@ def prepare(self, uri, headers, body):
             uri, headers, body = hook(uri, headers, body)
 
         return uri, headers, body
+
+    def __del__(self):
+        del self.client
+        del self.hooks

authlib/oauth2/client.py

@@ -438,6 +438,9 @@ def _http_post(self, url, body=None, auth=None, headers=None, **kwargs):
             url, data=dict(url_decode(body)),
             headers=headers, auth=auth, **kwargs)
 
+    def __del__(self):
+        del self.session
+
 
 def _guess_grant_type(kwargs):
     if 'code' in kwargs: