Description: Add try-except clause for importing Iterable pre/post Python 3.9.
Origin: https://github.com/dendrograms/astrodendro/commit/3fde58f1e06bf7f966ed52712d1bf8929282be41.patch
Author: nbrunett <nate.brunetti@gmail.com>
Date: Tue, 15 Feb 2022 13:55:09 -0500
Last-Update: 2022-04-10


--- a/astrodendro/dendrogram.py
+++ b/astrodendro/dendrogram.py
@@ -5,7 +5,12 @@
 # - An ancestor is the largest structure that a structure is part of
 
 import numpy as np
-from collections import Iterable
+try:
+    # Python <= 3.9
+    from collections import Iterable
+except ImportError:
+    # Python > 3.9
+    from collections.abc import Iterable
 import copy
 import warnings