Make VGroup and VDict printable

Author: nilaybhatia

manim/mobject/mobject.py

@@ -62,9 +62,6 @@ def __init__(self, **kwargs):
         self.generate_points()
         self.init_colors()
 
-    def __str__(self):
-        return str(self.name)
-
     def reset_points(self):
         self.points = np.zeros((0, self.dim))
 

manim/mobject/types/vectorized_mobject.py

@@ -876,6 +876,14 @@ def __init__(self, *vmobjects, **kwargs):
         VMobject.__init__(self, **kwargs)
         self.add(*vmobjects)
 
+    def __repr__(self):
+        return (
+            __class__.__name__
+            + "("
+            + ", ".join(str(mob) for mob in self.submobjects)
+            + ")"
+        )
+
     def add(self, *vmobjects):
         """Checks if all passed elements are an instance of VMobject and then add them to submobjects
 
@@ -934,6 +942,9 @@ def __init__(self, mapping_or_iterable={}, show_keys=False, **kwargs):
         self.submob_dict = {}
         self.add(mapping_or_iterable)
 
+    def __repr__(self):
+        return __class__.__name__ + "(" + repr(self.submob_dict) + ")"
+
     def add(self, mapping_or_iterable):
         """Adds the key-value pairs to the :class:`VDict` object.