OK, so it is not the same as the other Pari recursion bug which was fixed. I saw the ticket. I have never used the .n() method on anything, and when I want to embed a number field K into RR or CC I use K.embeddings(). Otherwise I might have noticed this before.
I note that A.?? does *not* show the source code, which is not in the file shown as the source of the A.n() function. On 18 March 2015 at 15:34, kcrisman <kcris...@gmail.com> wrote: >> Still happens with beta5. Do you want to open a ticket? >> > > Confirmed and see http://trac.sagemath.org/ticket/17985 > > >> >> ┌────────────────────────────────────────────────────────────────────┐ >> │ Sage Version 6.6.beta5, Release Date: 2015-03-13 │ >> │ Type "notebook()" for the browser-based notebook interface. │ >> │ Type "help()" for help. │ >> └────────────────────────────────────────────────────────────────────┘ >> ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ >> ┃ Warning: this is a prerelease version, and it may be unstable. ┃ >> ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛ >> sage: GaussianIntegers = NumberField(x^2+1, 'I').ring_of_integers() >> sage: A = GaussianIntegers([2,1]) >> sage: A.n() >> >> --------------------------------------------------------------------------- >> RuntimeError Traceback (most recent call >> last) >> <ipython-input-3-f924bd0d29c9> in <module>() >> ----> 1 A.n() >> >> /mnt/disk/home/release/Sage/src/sage/structure/element.pyx in >> sage.structure.element.Element.numerical_approx >> (build/cythonized/sage/structure/element.c:7435)() >> 743 """ >> 744 from sage.misc.functional import numerical_approx >> --> 745 return numerical_approx(self, prec=prec, digits=digits, >> 746 algorithm=algorithm) >> 747 n = numerical_approx >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/misc/functional.pyc >> in numerical_approx(x, prec, digits, algorithm) >> 1333 # The issue is not precision, try conversion instead >> 1334 try: >> -> 1335 return RR(x) >> 1336 except (TypeError, ValueError): >> 1337 pass >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.NamedConvertMap._call_ >> (build/cythonized/sage/structure/coerce_maps.c:5819)() >> 236 raise TypeError("Cannot coerce {} to {}".format(x, C)) >> 237 cdef Map m >> --> 238 cdef Element e = method(C) >> 239 if e is None: >> 240 raise RuntimeError("BUG in coercion model: {} method >> of {} returned None".format(self.method_name, type(x))) >> >> >> /mnt/disk/home/release/Sage/src/sage/rings/number_field/number_field_element.pyx >> in sage.rings.number_field.number_field_element.NumberFieldElement._mpfr_ >> (build/cythonized/sage/rings/number_field/number_field_element.cpp:15017)() >> 1383 return R(self.base_ring()(self)) >> 1384 else: >> -> 1385 return R(R.complex_field()(self)) >> 1386 >> 1387 def __float__(self): >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in __call__(self, x, im) >> 349 if im is not None: >> 350 x = x, im >> --> 351 return Parent.__call__(self, x) >> 352 >> 353 def _element_constructor_(self, x): >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4496)() >> 108 print type(C), C >> 109 print type(C._element_constructor), >> C._element_constructor >> --> 110 raise >> 111 >> 112 cpdef Element _call_with_args(self, x, args=(), kwds={}): >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4403)() >> 103 cdef Parent C = self._codomain >> 104 try: >> --> 105 return C._element_constructor(x) >> 106 except Exception: >> 107 if print_warnings: >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in _element_constructor_(self, x) >> 391 except AttributeError: >> 392 pass >> --> 393 return complex_number.ComplexNumber(self, x) >> 394 >> 395 def _coerce_map_from_(self, S): >> >> /mnt/disk/home/release/Sage/src/sage/rings/complex_number.pyx in >> sage.rings.complex_number.ComplexNumber.__init__ >> (build/cythonized/sage/rings/complex_number.c:4167)() >> 182 try: >> 183 R = parent._real_field() >> --> 184 rr = R(real) >> 185 ii = R(imag) >> 186 mpfr_set(self.__re, rr.value, rnd) >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.NamedConvertMap._call_ >> (build/cythonized/sage/structure/coerce_maps.c:5819)() >> 236 raise TypeError("Cannot coerce {} to {}".format(x, C)) >> 237 cdef Map m >> --> 238 cdef Element e = method(C) >> 239 if e is None: >> 240 raise RuntimeError("BUG in coercion model: {} method >> of {} returned None".format(self.method_name, type(x))) >> >> >> /mnt/disk/home/release/Sage/src/sage/rings/number_field/number_field_element.pyx >> in sage.rings.number_field.number_field_element.NumberFieldElement._mpfr_ >> (build/cythonized/sage/rings/number_field/number_field_element.cpp:15017)() >> 1383 return R(self.base_ring()(self)) >> 1384 else: >> -> 1385 return R(R.complex_field()(self)) >> 1386 >> 1387 def __float__(self): >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in __call__(self, x, im) >> 349 if im is not None: >> 350 x = x, im >> --> 351 return Parent.__call__(self, x) >> 352 >> 353 def _element_constructor_(self, x): >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4496)() >> 108 print type(C), C >> 109 print type(C._element_constructor), >> C._element_constructor >> --> 110 raise >> 111 >> 112 cpdef Element _call_with_args(self, x, args=(), kwds={}): >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4403)() >> 103 cdef Parent C = self._codomain >> 104 try: >> --> 105 return C._element_constructor(x) >> 106 except Exception: >> 107 if print_warnings: >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in _element_constructor_(self, x) >> 391 except AttributeError: >> 392 pass >> --> 393 return complex_number.ComplexNumber(self, x) >> 394 >> 395 def _coerce_map_from_(self, S): >> >> /mnt/disk/home/release/Sage/src/sage/rings/complex_number.pyx in >> sage.rings.complex_number.ComplexNumber.__init__ >> (build/cythonized/sage/rings/complex_number.c:4167)() >> 182 try: >> 183 R = parent._real_field() >> --> 184 rr = R(real) >> 185 ii = R(imag) >> 186 mpfr_set(self.__re, rr.value, rnd) >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.NamedConvertMap._call_ >> (build/cythonized/sage/structure/coerce_maps.c:5819)() >> 236 raise TypeError("Cannot coerce {} to {}".format(x, C)) >> 237 cdef Map m >> --> 238 cdef Element e = method(C) >> 239 if e is None: >> 240 raise RuntimeError("BUG in coercion model: {} method >> of {} returned None".format(self.method_name, type(x))) >> >> >> /mnt/disk/home/release/Sage/src/sage/rings/number_field/number_field_element.pyx >> in sage.rings.number_field.number_field_element.NumberFieldElement._mpfr_ >> (build/cythonized/sage/rings/number_field/number_field_element.cpp:15017)() >> 1383 return R(self.base_ring()(self)) >> 1384 else: >> -> 1385 return R(R.complex_field()(self)) >> 1386 >> 1387 def __float__(self): >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in __call__(self, x, im) >> 349 if im is not None: >> 350 x = x, im >> --> 351 return Parent.__call__(self, x) >> 352 >> 353 def _element_constructor_(self, x): >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4496)() >> 108 print type(C), C >> 109 print type(C._element_constructor), >> C._element_constructor >> --> 110 raise >> 111 >> 112 cpdef Element _call_with_args(self, x, args=(), kwds={}): >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4403)() >> 103 cdef Parent C = self._codomain >> 104 try: >> --> 105 return C._element_constructor(x) >> 106 except Exception: >> 107 if print_warnings: >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in _element_constructor_(self, x) >> 391 except AttributeError: >> 392 pass >> --> 393 return complex_number.ComplexNumber(self, x) >> 394 >> 395 def _coerce_map_from_(self, S): >> >> /mnt/disk/home/release/Sage/src/sage/rings/complex_number.pyx in >> sage.rings.complex_number.ComplexNumber.__init__ >> (build/cythonized/sage/rings/complex_number.c:4167)() >> 182 try: >> 183 R = parent._real_field() >> --> 184 rr = R(real) >> 185 ii = R(imag) >> 186 mpfr_set(self.__re, rr.value, rnd) >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.NamedConvertMap._call_ >> (build/cythonized/sage/structure/coerce_maps.c:5819)() >> 236 raise TypeError("Cannot coerce {} to {}".format(x, C)) >> 237 cdef Map m >> --> 238 cdef Element e = method(C) >> 239 if e is None: >> 240 raise RuntimeError("BUG in coercion model: {} method >> of {} returned None".format(self.method_name, type(x))) >> >> >> /mnt/disk/home/release/Sage/src/sage/rings/number_field/number_field_element.pyx >> in sage.rings.number_field.number_field_element.NumberFieldElement._mpfr_ >> (build/cythonized/sage/rings/number_field/number_field_element.cpp:15017)() >> 1383 return R(self.base_ring()(self)) >> 1384 else: >> -> 1385 return R(R.complex_field()(self)) >> 1386 >> 1387 def __float__(self): >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in __call__(self, x, im) >> 349 if im is not None: >> 350 x = x, im >> --> 351 return Parent.__call__(self, x) >> 352 >> 353 def _element_constructor_(self, x): >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4496)() >> 108 print type(C), C >> 109 print type(C._element_constructor), >> C._element_constructor >> --> 110 raise >> 111 >> 112 cpdef Element _call_with_args(self, x, args=(), kwds={}): >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.DefaultConvertMap_unique._call_ >> (build/cythonized/sage/structure/coerce_maps.c:4403)() >> 103 cdef Parent C = self._codomain >> 104 try: >> --> 105 return C._element_constructor(x) >> 106 except Exception: >> 107 if print_warnings: >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in _element_constructor_(self, x) >> 391 except AttributeError: >> 392 pass >> --> 393 return complex_number.ComplexNumber(self, x) >> 394 >> 395 def _coerce_map_from_(self, S): >> >> /mnt/disk/home/release/Sage/src/sage/rings/complex_number.pyx in >> sage.rings.complex_number.ComplexNumber.__init__ >> (build/cythonized/sage/rings/complex_number.c:4167)() >> 182 try: >> 183 R = parent._real_field() >> --> 184 rr = R(real) >> 185 ii = R(imag) >> 186 mpfr_set(self.__re, rr.value, rnd) >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> /mnt/disk/home/release/Sage/src/sage/structure/coerce_maps.pyx in >> sage.structure.coerce_maps.NamedConvertMap._call_ >> (build/cythonized/sage/structure/coerce_maps.c:5819)() >> 236 raise TypeError("Cannot coerce {} to {}".format(x, C)) >> 237 cdef Map m >> --> 238 cdef Element e = method(C) >> 239 if e is None: >> 240 raise RuntimeError("BUG in coercion model: {} method >> of {} returned None".format(self.method_name, type(x))) >> >> >> /mnt/disk/home/release/Sage/src/sage/rings/number_field/number_field_element.pyx >> in sage.rings.number_field.number_field_element.NumberFieldElement._mpfr_ >> (build/cythonized/sage/rings/number_field/number_field_element.cpp:15017)() >> 1383 return R(self.base_ring()(self)) >> 1384 else: >> -> 1385 return R(R.complex_field()(self)) >> 1386 >> 1387 def __float__(self): >> >> >> /mnt/disk/home/release/Sage/local/lib/python2.7/site-packages/sage/rings/complex_field.pyc >> in __call__(self, x, im) >> 349 if im is not None: >> 350 x = x, im >> --> 351 return Parent.__call__(self, x) >> 352 >> 353 def _element_constructor_(self, x): >> >> /mnt/disk/home/release/Sage/src/sage/structure/parent.pyx in >> sage.structure.parent.Parent.__call__ >> (build/cythonized/sage/structure/parent.c:9602)() >> 1092 if mor is not None: >> 1093 if no_extra_args: >> -> 1094 return mor._call_(x) >> 1095 else: >> 1096 return mor._call_with_args(x, args, kwds) >> >> ... >> >> >> /mnt/disk/home/release/Sage/src/sage/misc/cachefunc.pyx in >> sage.misc.cachefunc.WeakCachedFunction.__call__ >> (build/cythonized/sage/misc/cachefunc.c:7801)() >> 1280 if self._argument_fixer is None: >> 1281 self.argfix_init() >> -> 1282 k = self._fix_to_pos(*args, **kwds) >> 1283 else: >> 1284 if self._default_key is not None: >> >> RuntimeError: maximum recursion depth exceeded while calling a Python >> 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