From 1cd24026e9cf6d63d539b359f8ba5155fd48ae21 Mon Sep 17 00:00:00 2001
From: Stefan Behnel <stefan_ml@behnel.de>
Date: Fri, 15 Mar 2019 00:10:05 +0100
Subject: [PATCH] Import "Iterable" ABC class from "collections.abc" in Py3
 instead of deprecated "collections" package.

---
 Cython/Build/Dependencies.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Cython/Build/Dependencies.py b/Cython/Build/Dependencies.py
index a4e5c60bee..eb03004e24 100644
--- a/Cython/Build/Dependencies.py
+++ b/Cython/Build/Dependencies.py
@@ -18,6 +18,11 @@
 from distutils.util import strtobool
 import zipfile
 
+try:
+    from collections.abc import Iterable
+except ImportError:
+    from collections import Iterable
+
 try:
     import gzip
     gzip_open = gzip.open
@@ -749,7 +754,7 @@ def create_extension_list(patterns, exclude=None, ctx=None, aliases=None, quiet=
         exclude = []
     if patterns is None:
         return [], {}
-    elif isinstance(patterns, basestring) or not isinstance(patterns, collections.Iterable):
+    elif isinstance(patterns, basestring) or not isinstance(patterns, Iterable):
         patterns = [patterns]
     explicit_modules = set([m.name for m in patterns if isinstance(m, Extension)])
     seen = set()