Helloooo everybody !
Here is the problem I met today:
sage: F = FiniteEnumeratedSet(("a","b","c")); F
{'a', 'b', 'c'}
sage: isinstance(F,Parent)
True
sage: F[0]
'a'
sage: F[0].parent()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-15-142f29211c68> in <module>()
----> 1 F[Integer(0)].parent()
AttributeError: 'str' object has no attribute 'parent'
Soooooooo sometimes you write code that applies to parents, and sometimes
the elements know what their parents are, sometimes they don't....
1) Is that normal ?
2) If not, what do we do against it ?
Have fun !
Nathann
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