[issue26092] doctest should allow custom sys.displayhook

[Sergey B Kirpichev]

New submission from Sergey B Kirpichev:

The purpose of doctest's - verify interactive examples.  But if
your users will use custom displayhook all the time (consider, as
examples CAS like SymPy or https://github.com/skirpichev/omg/) - why
you must show them examples with the builtin's displayhook?

After https://bugs.python.org/issue8048, sys.displayhook can't be
customized for doctest.  I think, that decision was wrong and we
should have a better solution.

PS: In fact, right now this issue can be workarrounded if you instead
override sys.__displayhook__ before doctest call.  But I believe
this "solution" has own problems.

----------
components: Library (Lib)
messages: 258115
nosy: Sergey.Kirpichev
priority: normal
severity: normal
status: open
title: doctest should allow custom sys.displayhook
type: behavior

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26092>
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