On Fri, Jan 3, 2020 at 8:52 PM Donald Munro <[email protected]> wrote:
>
> Running:
>>
>> from sage.plot.plot3d.shapes2 import Line
>> X = Line([(-1, 0, 0), (0, 0, 0), (1, 0, 0)], color='red')
>> Y = Line([(0, -1, 0), (0, 0, 0), (0, -1,0)], color='green')
>> Z = Line([(0, 0, -1), (0, 0, 0), (0, 0, -1)], color='green')
>> show(X+Y+Z, figsize=8)
>
>
> results in a
>>
>> TypeError: Object of type Integer is not JSON serializable
the problem is that Sage's type Integer cannot be used in Line()
You'd need to use Python types, e.g. int(), float(), etc
E.g.
Line([(int(-1), int(0), int(0)), (int(0), int(0), int(0)), (int(1),
int(0), int(0))], color='red')
This appears to be a bug, not sure about its origin :-(
>
>
> The above works on 8.9 (tested using docker run -p8888:8888
> sagemath/sagemath:8.9 sage-jupyter).
>
> Error occurred on Arch Linux distribution using SageMath 9.0 and Python 3.8.1.
>
> The full error trace is:
>>
>> TypeError Traceback (most recent call last)
>> <ipython-input-1-f86e4a3173d9> in <module>
>> 3 Y = Line([(Integer(0), -Integer(1), Integer(0)), (Integer(0),
>> Integer(0), Integer(0)), (Integer(0), -Integer(1),Integer(0))],
>> color='green')
>> 4 Z = Line([(Integer(0), Integer(0), -Integer(1)), (Integer(0),
>> Integer(0), Integer(0)), (Integer(0), Integer(0), -Integer(1))],
>> color='green')
>> ----> 5 show(X+Y+Z, figsize=Integer(8))
>>
>> /usr/lib/python3.8/site-packages/sage/repl/rich_output/pretty_print.py in
>> show(*args, **kwds)
>> 256 args[0].show()
>> 257 return
>> --> 258 pretty_print(*args, **kwds)
>>
>> /usr/lib/python3.8/site-packages/sage/repl/rich_output/pretty_print.py in
>> pretty_print(*args, **kwds)
>> 227 pass
>> 228 elif len(args) == 1:
>> --> 229 dm.display_immediately(*args, **kwds)
>> 230 else:
>> 231 SequencePrettyPrinter(*args, **kwds).pretty_print()
>>
>> /usr/lib/python3.8/site-packages/sage/repl/rich_output/display_manager.py in
>> display_immediately(self, obj, **rich_repr_kwds)
>> 835 1/2
>> 836 """
>> --> 837 plain_text, rich_output = self._rich_output_formatter(obj,
>> rich_repr_kwds)
>> 838 self._backend.display_immediately(plain_text, rich_output)
>> 839
>>
>> /usr/lib/python3.8/site-packages/sage/repl/rich_output/display_manager.py in
>> _rich_output_formatter(self, obj, rich_repr_kwds)
>> 623 has_rich_repr = isinstance(obj, SageObject) and hasattr(obj,
>> '_rich_repr_')
>> 624 if has_rich_repr:
>> --> 625 rich_output = self._call_rich_repr(obj, rich_repr_kwds)
>> 626 if isinstance(rich_output, OutputPlainText):
>> 627 plain_text = rich_output
>>
>> /usr/lib/python3.8/site-packages/sage/repl/rich_output/display_manager.py in
>> _call_rich_repr(self, obj, rich_repr_kwds)
>> 581 if rich_repr_kwds:
>> 582 # do not ignore errors from invalid options
>> --> 583 return obj._rich_repr_(self, **rich_repr_kwds)
>> 584 try:
>> 585 return obj._rich_repr_(self)
>>
>> /usr/lib/python3.8/site-packages/sage/plot/plot3d/base.pyx in
>> sage.plot.plot3d.base.Graphics3d._rich_repr_
>> (build/cythonized/sage/plot/plot3d/base.c:5483)()
>> 149 ### Second, return the corresponding graphics file
>> 150 if viewer == 'threejs':
>> --> 151 return self._rich_repr_threejs(**opts)
>> 152 elif viewer == 'jmol':
>> 153 return self._rich_repr_jmol(**opts)
>>
>> /usr/lib/python3.8/site-packages/sage/plot/plot3d/base.pyx in
>> sage.plot.plot3d.base.Graphics3d._rich_repr_threejs
>> (build/cythonized/sage/plot/plot3d/base.c:9653)()
>> 409 thickness = p._extra_kwds.get('thickness', 1)
>> 410 lines.append('{{"points":{}, "color":"{}",
>> "opacity":{}, "linewidth":{}}}'.format(
>> --> 411 json.dumps(p.points), color, opacity,
>> thickness))
>> 412 if hasattr(p, '_trans'):
>> 413 m = p.get_transformation().get_matrix()
>>
>> /usr/lib/python3.8/json/__init__.py in dumps(obj, skipkeys, ensure_ascii,
>> check_circular, allow_nan, cls, indent, separators, default, sort_keys, **kw)
>> 229 cls is None and indent is None and separators is None and
>> 230 default is None and not sort_keys and not kw):
>> --> 231 return _default_encoder.encode(obj)
>> 232 if cls is None:
>> 233 cls = JSONEncoder
>>
>> /usr/lib/python3.8/json/encoder.py in encode(self, o)
>> 197 # exceptions aren't as detailed. The list call should be
>> roughly
>> 198 # equivalent to the PySequence_Fast that ''.join() would do.
>> --> 199 chunks = self.iterencode(o, _one_shot=True)
>> 200 if not isinstance(chunks, (list, tuple)):
>> 201 chunks = list(chunks)
>>
>> /usr/lib/python3.8/json/encoder.py in iterencode(self, o, _one_shot)
>> 255 self.key_separator, self.item_separator,
>> self.sort_keys,
>> 256 self.skipkeys, _one_shot)
>> --> 257 return _iterencode(o, 0)
>> 258
>> 259 def _make_iterencode(markers, _default, _encoder, _indent, _floatstr,
>>
>> /usr/lib/python3.8/json/encoder.py in default(self, o)
>> 177
>> 178 """
>> --> 179 raise TypeError(f'Object of type {o.__class__.__name__} '
>> 180 f'is not JSON serializable')
>> 181
>>
>> TypeError: Object of type Integer is not JSON serializable
>
>
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