From 105535b36226aef9e52b844f02a285268c4d1b50 Mon Sep 17 00:00:00 2001
From: Thomas Leonard <thomas@loftorbital.com>
Date: Wed, 10 Mar 2021 14:18:24 +0100
Subject: [PATCH] Fix for python 2.7

---
 graphene_django/converter.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/graphene_django/converter.py b/graphene_django/converter.py
index 63cc35d..b744e51 100644
--- a/graphene_django/converter.py
+++ b/graphene_django/converter.py
@@ -69,7 +69,11 @@ def convert_choices_to_named_enum_with_descriptions(name, choices):
         def description(self):
             return named_choices_descriptions[self.name]
 
-    return Enum(name, list(named_choices), type=EnumWithDescriptionsType)
+    if named_choices == []:
+        # Python 2.7 doesn't handle enums with lists with zero entries, but works okay with empty sets
+        named_choices = set()
+
+    return Enum(name, named_choices, type=EnumWithDescriptionsType)
 
 
 def generate_enum_name(django_model_meta, field):