Bug in conversion from gp elements to p-adics #3865
Description
David Loeffler ran into the following:
sage: v = gp.polrootspadic(x^2-2, 7, 20)[1]
sage: R = Zp(7, 10, "capped-rel")
sage: R(v)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/Users/craigcitro/<ipython console> in <module>()
/Users/craigcitro/three-one/local/lib/python2.5/site-packages/sage/rings/padics/padic_generic.py in __call__(self, x, absprec, relprec)
82 Casts x into self. Uses the constructor of self._element_class.
83 """
---> 84 return self._element_class(self, x, absprec, relprec)
85
86 def _coerce_impl(self, x):
/Users/craigcitro/padic_capped_relative_element.pyx in sage.rings.padics.padic_capped_relative_element.pAdicCappedRelativeElement.__init__ (sage/rings/padics/padic_capped_relative_element.c:4872)()
/Users/craigcitro/rational.pyx in sage.rings.rational.Rational.__init__ (sage/rings/rational.c:3767)()
/Users/craigcitro/rational.pyx in sage.rings.rational.Rational.__set_value (sage/rings/rational.c:4567)()
/Users/craigcitro/three-one/local/lib/python2.5/site-packages/sage/interfaces/expect.py in _rational_(self)
1393 def _rational_(self):
1394 import sage.rings.all
-> 1395 return sage.rings.all.Rational(repr(self))
1396
1397 def name(self, new_name=None):
/Users/craigcitro/rational.pyx in sage.rings.rational.Rational.__init__ (sage/rings/rational.c:3767)()
/Users/craigcitro/rational.pyx in sage.rings.rational.Rational.__set_value (sage/rings/rational.c:4533)()
TypeError: unable to convert 3 + 7 + 2*7^2 + 6*7^3 + 7^4 + 2*7^5 + 7^6 + 2*7^7 + 4*7^8 + 6*7^9 + 6*7^10 + 2*7^11 + 7^12 + 7^13 + 2*7^15 + 7^16 + 7^17 + 4*7^18 + 6*7^19 + O(7^20) to a rational
The trouble is that the code in the __init__ method for pAdicCappedRelativeElements only looks for Pari gen objects, not GpElements. The fix should be trivial, but I'm going to look at it tomorrow.
Component: interfaces
Keywords: sd51
Author: David Loeffler
Reviewer: Jan Tuitman
Merged: sage-5.12.beta2
Issue created by migration from https://trac.sagemath.org/ticket/3865