Loading a .spyx file with
def bla(W):
RootSystem(W.cartan_type())yields
undeclared name not builtin: RootSystemIs there a library that I need to include?
It looks like you should:
sage: import_statements(RootSystem)
from sage.combinat.root_system.root_system import RootSystemAs you can see in the documentation of import_statements, it tries to find out from where the symbol requested should be imported and returns a string that describes a command to do that import. So, in your case, it suggests to use
from sage.combinat.root_system.root_system import RootSystemThanks, this was helpful - the right answer is
from sage.all import RootSystemIf you check the contents of sage.all, you'll see that it consists entirely of imports from other modules. There is something to say for importing symbols from their original location, which is why import_statements traces the import to its actual origin. I wouldn't say the import from sage.all is wrong but it's definitely not the right answer.
Sorry I'm new to this, but import_statements(RootSystem) didn't seem to work for Cython - I suppose the "right" answer might then be
from sage.combinat.root_system.root_system import RootSystem... and that's exactly what you meant. Woops!
Asked: 5 years ago
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Last updated: Jan 04 '20
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