The error disappeared with 
sage -pip install --upgrade 
https://github.com/3-manifolds/SnapPy/archive/master.zip
adapting the suggestion in https://github.com/3-manifolds/SnapPy/issues/22

El miércoles, 7 de abril de 2021 a las 23:43:58 UTC+2, enriqu...@gmail.com 
escribió:

> Thanks!
>
> El miércoles, 7 de abril de 2021 a las 21:48:37 UTC+2, vdelecroix escribió:
>
>> More precisely 
>>
>> https://trac.sagemath.org/ticket/30857#comment:9 
>>
>> Le 07/04/2021 à 21:45, Vincent Delecroix a écrit : 
>> > Isn't it 
>> > 
>> > https://trac.sagemath.org/ticket/30857 
>> > 
>> > Le 07/04/2021 à 21:06, enriqu...@gmail.com a écrit : 
>> >> Is there anyone using snappy inside sage? Uninstalling and stalling 
>> >> produce 
>> >> the same errors. 
>> >> 
>> >> El miércoles, 17 de marzo de 2021 a las 16:02:06 UTC+1, 
>> >> enriqu...@gmail.com 
>> >> escribió: 
>> >> 
>> >>> I did it a few minutes ago. The orders "sage -i snappy", "sage -f 
>> >>> snappy", 
>> >>> "sage -pip uninstall snappy"+"sage -pip uninstall snappy" made no 
>> change 
>> >>> 
>> >>> El miércoles, 17 de marzo de 2021 a las 10:56:21 UTC+1, 
>> dim...@gmail.com 
>> >>> escribió: 
>> >>> 
>> >>>> did you try reinstalling it? 
>> >>>> 
>> >>>> 
>> >>>> 
>> >>>> On Wed, 17 Mar 2021, 08:33 enriqu...@gmail.com, <enriqu...@gmail.com> 
>>
>> >>>> wrote: 
>> >>>> 
>> >>>>> I was able to install in snappy in Sage 9.3beta8. I did not test it 
>> >>>>> when 
>> >>>>> installed and now in beta9 I am unable to test it. 
>> >>>>> For import snappy I get a couple of DeprecationWarnings: 
>> >>>>> 
>> >>>>> local/lib/python3.9/site-packages/snappy/snap/shapes.py:4: 
>> >>>>> DeprecationWarning: the complex_field module is deprecated, please 
>> use 
>> >>>>> sage.rings.complex_mpf 
>> >>>>> 
>> >>>>> 
>> local/lib/python3.9/site-packages/snappy/verify/verifyCanonical.py:6: 
>> >>>>> DeprecationWarning: the complex_number module is deprecated, please 
>> >>>>> use 
>> >>>>> sage.rings.complex_mpfr 
>> >>>>> 
>> >>>>> and the following error: 
>> >>>>>    from .squareExtensions import 
>> >>>>> find_shapes_as_complex_sqrt_lin_combinations 
>> >>>>> 
>> --------------------------------------------------------------------------- 
>> >>>>> 
>> >>>>> 
>> >>>>> TypeError                                 Traceback (most recent 
>> call 
>> >>>>> last) 
>> >>>>> <ipython-input-2-710a7f18823c> in <module> 
>> >>>>> ----> 1 import snappy 
>> >>>>> 
>> >>>>> ~/sage/local/lib/python3.9/site-packages/snappy/__init__.py in 
>> >>>>> <module> 
>> >>>>>       5 #logging.debug('This message should go to the log file') 
>> >>>>>       6 import sys 
>> >>>>> ----> 7 from .SnapPy import (AbelianGroup, HolonomyGroup, 
>> >>>>> FundamentalGroup, 
>> >>>>>       8                      DirichletDomain, CuspNeighborhood, 
>> >>>>> SymmetryGroup, 
>> >>>>>       9                      AlternatingKnotExteriors, 
>> >>>>> NonalternatingKnotExteriors, 
>> >>>>> 
>> >>>>> cython/core/fundamental_group.pyx in init SnapPy() 
>> >>>>> 
>> >>>>> cython/core/fundamental_group.pyx in 
>> >>>>> SnapPy.HolonomyGroup.use_field_conversion() 
>> >>>>> 
>> >>>>> TypeError: can't set attributes of built-in/extension type 'type' 
>> >>>>> 
>> >>>>> -- 
>> >>>>> You received this message because you are subscribed to the Google 
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>> >>>>> To unsubscribe from this group and stop receiving emails from it, 
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>> >>>>> an email to sage-devel+...@googlegroups.com. 
>> >>>>> To view this discussion on the web visit 
>> >>>>> 
>> https://groups.google.com/d/msgid/sage-devel/b92b7369-c9f4-47e1-b13f-1530ad0323acn%40googlegroups.com
>>  
>> >>>>> 
>> >>>>> <
>> https://groups.google.com/d/msgid/sage-devel/b92b7369-c9f4-47e1-b13f-1530ad0323acn%40googlegroups.com?utm_medium=email&utm_source=footer>
>>  
>>
>> >>>>> 
>> >>>>> . 
>> >>>>> 
>> >>>> 
>> >> 
>>
>

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