Hello,

`is there a simple way to check in Sage that something is a real number`

`in some form? That is, I am looking for a predicate which returns True`

`on all the following things:`

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int(2) ZZ(2) float(2.3) QQ(23/10) RR(2.3) RDF(2.3) SR(2.3) 2*pi but not on things like "2.3" CC(2.3, 0) SR.symbol("x") -- 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.