Fix PEP8 issues with latest pycodestyle (#6636)

web/pgadmin/tools/erd/__init__.py

@@ -663,7 +663,7 @@ def tables(params):
                                                params.get('tid', None))
 
         if not status:
-            tables = tables.json if type(tables) == Response else tables
+            tables = tables.json if isinstance(tables, Response) else tables
             socketio.emit('tables_failed', tables,
                           namespace=SOCKETIO_NAMESPACE,
                           to=request.sid)

web/pgadmin/tools/schema_diff/__init__.py

@@ -446,8 +446,8 @@ def compare_database(params):
                                params['target_sid'])
     if not status:
         socketio.emit('compare_database_failed',
-                      error_msg.json if type(
-                          error_msg) == Response else error_msg,
+                      error_msg.json if isinstance(
+                          error_msg, Response) else error_msg,
                       namespace=SOCKETIO_NAMESPACE, to=request.sid)
         return error_msg
 
@@ -585,8 +585,8 @@ def compare_schema(params):
                                params['target_sid'])
     if not status:
         socketio.emit('compare_schema_failed',
-                      error_msg.json if type(
-                          error_msg) == Response else error_msg,
+                      error_msg.json if isinstance(
+                          error_msg, Response) else error_msg,
                       namespace=SOCKETIO_NAMESPACE, to=request.sid)
         return error_msg
 

web/pgadmin/tools/user_management/__init__.py

@@ -467,7 +467,7 @@ def validate_user(data):
     if 'auth_source' in data and data['auth_source'] != "":
         new_data['auth_source'] = data['auth_source']
 
-    if 'locked' in data and type(data['locked']) == bool:
+    if 'locked' in data and isinstance(data['locked'], bool):
         new_data['locked'] = data['locked']
         if data['locked']:
             new_data['login_attempts'] = config.MAX_LOGIN_ATTEMPTS