Fix deprecated import from colletions

aleju · Dec 17, 2019 · 3cabaf9 · 3cabaf9
1 parent c268d36
commit 3cabaf9
Show file tree

Hide file tree

Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/changelogs/master/fixed/20191217_collections_abc.md b/changelogs/master/fixed/20191217_collections_abc.md
@@ -0,0 +1,4 @@
+# Fixed Abstract Base Classes Import #527
+
+* Fixed a deprecation warning and potential crash in python 3.8
+  related to the use of `collections` instead of `collections.abc`.
diff --git a/imgaug/imgaug.py b/imgaug/imgaug.py
@@ -8,7 +8,11 @@
 import json
 import types
 import functools
-import collections
+# collections.abc exists since 3.3 and is expected to be used for 3.8+
+try:
+    from collections.abc import Iterable
+except ImportError:
+    from collections import Iterable
 
 import numpy as np
 import cv2
@@ -305,7 +309,7 @@ def is_iterable(val):
         ``True`` if the variable is an iterable. Otherwise ``False``.
 
     """
-    return isinstance(val, collections.Iterable)
+    return isinstance(val, Iterable)
 
 
 # TODO convert to is_single_string() or rename is_single_integer/float/number()