On Monday, November 14, 2016 at 12:49:17 PM UTC-8, Paul Masson wrote: > > Doesn't the explicit alias to abs_symbolic put abs into the global name > space as a symbolic function? Why does an import of abs create more > problems than the alias? Is this a general Python problem or something > specific to SageMath? >
No, it doesn't. The "abs" in the global namespace is just the generic python one: abs(a) dispatches to a.__abs__() sage: class A(object): ....: def __abs__(self): ....: return "abs" ....: sage: a=A() sage: abs(a) 'abs' sage: sage.functions.all.abs_symbolic(a) TypeError: cannot coerce arguments: no canonical coercion from <class '__main__.A'> to Symbolic Ring -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
