asym in python interface crashes on empty index list

kpeeters / cadabra2

A field-theory motivated approach to computer algebra.

https://cadabra.science/

GNU General Public License v3.0

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Closed ChrisPattison closed 5 years ago

ChrisPattison commented 5 years ago

Attempting to antisymmetrize an expression will crash the python interpreter if no indices are passed (v 2.2.4)

Minimum reproducer

`from cadabra2 import *

Indices(Ex(r'\mu, \nu'), Ex('vector')) asym(Ex(r'\Lambda_{\mu \nu}'), Ex('')) `

kpeeters commented 5 years ago

Should be fixed in 7c7b02e5f39755123d72ed3c64865c73eb7310ff.