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-rw-r--r--rest_framework/utils/encoders.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/rest_framework/utils/encoders.py b/rest_framework/utils/encoders.py
index b26a2085..7efd5417 100644
--- a/rest_framework/utils/encoders.py
+++ b/rest_framework/utils/encoders.py
@@ -42,6 +42,8 @@ class JSONEncoder(json.JSONEncoder):
return str(o.total_seconds())
elif isinstance(o, decimal.Decimal):
return str(o)
+ elif hasattr(o, 'tolist'):
+ return o.tolist()
elif hasattr(o, '__iter__'):
return [i for i in o]
return super(JSONEncoder, self).default(o)