From 01f4ef3e5d59b9afe30654a0ccef6a2a6bf10098 Mon Sep 17 00:00:00 2001
From: Bill Xi <86190295+BillyLikesHacking@users.noreply.github.com>
Date: Sun, 31 Oct 2021 20:02:30 +0800
Subject: [PATCH] Create mobject.py

---
 manimlib/mobject/mobject.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/manimlib/mobject/mobject.py b/manimlib/mobject/mobject.py
index 5dd8dff0..16a4fc5c 100644
--- a/manimlib/mobject/mobject.py
+++ b/manimlib/mobject/mobject.py
@@ -1595,7 +1595,9 @@ class Group(Mobject):
             raise Exception("All submobjects must be of type Mobject")
         Mobject.__init__(self, **kwargs)
         self.add(*mobjects)
+        
     def __add__(self, other : 'Mobject' or 'Group'):
+        assert(isinstance(other(Mobject))
         return self.add(other)