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Improve is_node error message

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This commit is contained in:
Markus Padourek 2016-10-13 14:08:28 +01:00 committed by GitHub
parent 88ccaec8fa
commit ef18eb5ce3
1 changed files with 2 additions and 2 deletions
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4
graphene/relay/node.py
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@ -13,8 +13,8 @@ def is_node(objecttype):
Check if the given objecttype has Node as an interface
'''
assert issubclass(objecttype, ObjectType), (
'Only ObjectTypes can have a Node interface.'
)
'Only ObjectTypes can have a Node interface. Received %s'
) % objecttype
for i in objecttype._meta.interfaces:
if issubclass(i, Node):
return True