Hi,
If you want to play around with a copy of Sage built using Python3
instead of Python2 (so 'export SAGE_PYTHON3="was"') without having to
build or install anything, send me an email (wst...@gmail.com) and
I'll add you to a CoCalc project [1] that has Sage built that way.
See how long until it breaks for you on your favorite Sage commands.
For me, it broke pretty quickly:
sage: print(2,3)
2 3
sage: range(10)
range(0, 10)
sage: {'a', 'b'}
{'a', 'b'}
sage: M = ModularSymbols(23)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-6-b5f2062004dc> in <module>()
----> 1 M = ModularSymbols(Integer(23))
/home/user/sage/local/lib/python3.6/site-packages/sage/modular/modsym/modsym.py
in ModularSymbols(group, weight, sign, base_ring, use_cache,
custom_init)
346 key = canonical_parameters(group, weight, sign, base_ring)
347
--> 348 if use_cache and key in _cache:
349 M = _cache[key]()
350 if not (M is None): return M
TypeError: unhashable type: 'Gamma0_class_with_category'
-- William
[1]
https://cocalc.com/projects/d282680a-dda9-486c-87fe-d7f4331bbf53/files/README.md?session=default
--
William (http://wstein.org)
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