#10906: lazy import can break unique representation
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Reporter: nthiery | Owner: jason
Type: defect | Status: new
Priority: major | Milestone:
Component: misc | Keywords: lazy import, unique representation
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by lftabera):
I am having hard time inserting lazy_imports into some libraries. They
break coercions and parents.
In the example above the problem cannot really be solved. QQ and a lazy_QQ
will always have different id because they are different objects, "is" is
comparing the memory addresses that of course are different.
My advise: never use lazy_imports for QQ, ZZ, CC, RR, SR, all the symbolic
constants, Infinity...
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10906#comment:1>
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