From a91662affeb0aae2515cdc5e8f82269337105bf4 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Fri, 12 Jan 2018 02:47:36 -0800
Subject: bpo-32473: Improve ABCMeta._dump_registry() readability (GH-5091)

(cherry picked from commit ae12f5d4c98f2095c2aadd58981453e955044697)
---
 Lib/abc.py                                                        | 4 +++-
 Misc/NEWS.d/next/Library/2018-01-10-20-37-59.bpo-32473.mP_yJG.rst | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Library/2018-01-10-20-37-59.bpo-32473.mP_yJG.rst

diff --git a/Lib/abc.py b/Lib/abc.py
index 43a34a0..a092db2 100644
--- a/Lib/abc.py
+++ b/Lib/abc.py
@@ -170,9 +170,11 @@ class ABCMeta(type):
         """Debug helper to print the ABC registry."""
         print("Class: %s.%s" % (cls.__module__, cls.__qualname__), file=file)
         print("Inv.counter: %s" % ABCMeta._abc_invalidation_counter, file=file)
-        for name in sorted(cls.__dict__.keys()):
+        for name in sorted(cls.__dict__):
             if name.startswith("_abc_"):
                 value = getattr(cls, name)
+                if isinstance(value, WeakSet):
+                    value = set(value)
                 print("%s: %r" % (name, value), file=file)
 
     def __instancecheck__(cls, instance):
diff --git a/Misc/NEWS.d/next/Library/2018-01-10-20-37-59.bpo-32473.mP_yJG.rst b/Misc/NEWS.d/next/Library/2018-01-10-20-37-59.bpo-32473.mP_yJG.rst
new file mode 100644
index 0000000..95b9d45
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-01-10-20-37-59.bpo-32473.mP_yJG.rst
@@ -0,0 +1 @@
+Improve ABCMeta._dump_registry() output readability
-- 
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