conversion from symbolic expression to laurent polynomial #21833
Description
sage: L = LaurentPolynomialRing(QQ, 'x')
sage: L(x + 3/x)
3*x^-1 + x
should work, but doesn't.
Component: algebra
Author: Daniel Krenn
Branch/Commit: ba5f230
Reviewer: Ralf Stephan
Issue created by migration from https://trac.sagemath.org/ticket/21833