refactor: merge isinstance calls

You can pass a tuple of types you want to check as the second argument to `isinstance`. If the object matches with any of the types, it will return `True` else `False`.

python/demo_code.py

@@ -115,11 +115,7 @@ def tar_something():
 def bad_isinstance(initial_condition, object, other_obj, foo, bar, baz):
     if (
         initial_condition
-        and (
-            isinstance(object, int)
-            or isinstance(object, float)
-            or isinstance(object, str)
-        )
+        and isinstance(object, (int, float, str))
         and isinstance(other_obj, float)
         and isinstance(foo, str)
         or (isinstance(bar, float) or isinstance(bar, str))