Hello, I noticed the following discrepancy:
sage: ZZ(RR(3)) 3 sage: RR(3) in ZZ True sage: ZZ(CC(3, 0)) TypeError: unable to coerce <type 'sage.rings.complex_number.ComplexNumber'>to an integer sage: CC(3, 0) in ZZ False It's useful in some contexts to be able to recognize integer-like objects, and it seems that doing x in ZZ is the most convenient method. For example, in a symbolic function I'm implementing I have to detect singularities inside the _evalf_ method, which occur at negative integers for this particular function. However, the input is sometimes coerced into CC, and thus if I check whether it's in ZZ I will get false, even though it's integer-like. Should I write a patch to make integer-like complex numbers coerce-able into ZZ? Thank you. -- 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 http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
