#15034: Raise a NotImplementedError, not a NotImplemented, in _lazy_attribute
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Reporter: SimonKing | Owner:
Type: PLEASE CHANGE | Status: new
Priority: trivial | Milestone: sage-5.12
Component: performance | Keywords:
Merged in: | Authors: Simon King
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Dependencies: | Stopgaps:
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In #14615, lazy attributes became cythoned. For technical reasons, there
is a Cython class doing fast stuff in the background (_lazy_attribute),
but the thing that is really used is a Python class lazy_attribute
inheriting from the Cython class.
The mock init method of the Cython class tried to state that only wrappers
of this class should be instantiated. Unfortunately, it does not raise an
error, but tries to raise the value `NotImplemented`. This is fixed in my
patch.
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Ticket URL: <http://trac.sagemath.org/ticket/15034>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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