Comment #2 on issue 3085 by matt...@gmail.com: poly() does not respect the given order of generators
http://code.google.com/p/sympy/issues/detail?id=3085
It is. Example: Groebner bases. Poly doesn't change the order of variables, because it is an important element of ordering of monomials (for example in Maple order of variables is a part of monomial order, not a separate argument to polynomial manipulation functions). The only time when Poly does reorder (at least partially) variables is when you take two or more polynomials with different variables (in this case order of variables of the first polynomial is still kept).
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