Message11148

Author	refi64
Recipients	refi64
Date	2017-02-28.23:57:35
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1488326255.86.0.533754845485.issue2560@psf.upfronthosting.co.za>
In-reply-to

Content
class A(type): pass class B(type): def __instancecheck__(): pass class C(A, B): pass print(isinstance(object(), C)) gives: Traceback (most recent call last): File "tst.py", line 8, in <module> print(isinstance(object(), C)) RuntimeError: maximum recursion depth exceeded (Java StackOverflowError) Originally reported as https://github.com/python/typing/issues/395.

class A(type): pass

class B(type):
    def __instancecheck__(): pass

class C(A, B): pass

print(isinstance(object(), C))


gives:


Traceback (most recent call last):
  File "tst.py", line 8, in <module>
    print(isinstance(object(), C))
RuntimeError: maximum recursion depth exceeded (Java StackOverflowError)


Originally reported as https://github.com/python/typing/issues/395.

History
Date	User	Action	Args
2017-02-28 23:57:35	refi64	set	recipients: + refi64
2017-02-28 23:57:35	refi64	set	messageid: <1488326255.86.0.533754845485.issue2560@psf.upfronthosting.co.za>
2017-02-28 23:57:35	refi64	link	issue2560 messages
2017-02-28 23:57:35	refi64	create