Hi Mateusz,
This works with the high-level code but does not work with the low-
level code in polys9:
from sympy.polys.monomialtools import monomial_lex_key as O_lex
from sympy.polys.groebnertools import *
from sympy.polys.polytools import basic_from_dict
gens = [x,y]
u = 1
f = sdp_from_dict(Poly(x, *gens).rep.to_dict(), O_lex)
g = sdp_from_dict(Poly(y, *gens).rep.to_dict(), O_lex)
In [9]: sdp_quo(sdp_mul(f, g, u, O_lex, QQ), g, u, O_lex, QQ) # f
expected
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/tmp/mattpap-sympy-polys-9994e86/<ipython console> in <module>()
/tmp/mattpap-sympy-polys-9994e86/sympy/polys/groebnertools.pyc in
sdp_quo(f, g, u, O, K)
393 def sdp_quo(f, g, u, O, K):
394 """Returns polynomial quotient in `K[X]`. """
--> 395 q, r = sdp_div(f, g, u, O, K)
396
397 if not r:
/tmp/mattpap-sympy-polys-9994e86/sympy/polys/groebnertools.pyc in
sdp_div(f, G, u, O, K)
374 while f:
375 for i, g in enumerate(G):
--> 376 tq = term_div(sdp_LT(f, u, K), sdp_LT(g, u, K), K)
377
378 if tq is not None:
/tmp/mattpap-sympy-polys-9994e86/sympy/polys/groebnertools.pyc in
_term_ff_div(a, b, K)
340 b_lm, b_lc = b
341
--> 342 monom = monomial_div(a_lm, b_lm)
343
344 if monom is not None:
/tmp/mattpap-sympy-polys-9994e86/sympy/polys/monomialtools.pyc in
monomial_div(A, B)
180
181 """
--> 182 C = [ a - b for a, b in zip(A, B) ]
183
184 if all([ c >= 0 for c in C ]):
TypeError: zip argument #2 must support iteration
Thanks,
Ben
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