Comment #2 on issue 3323 by [email protected]: perm_groups
alt_or_sym failure
http://code.google.com/p/sympy/issues/detail?id=3323
Hi all,
it's my fault for writing a bad docstring. The other way I see to cope with
this is the following: we add an attribute _is_alt_sym to the
PermutationGroup class, which is initialized to None and is set to True if
during a run of is_alt_sym we get True. Then, in alt_or_sym we remove the
run of is_alt_sym() and instead check whether _is_alt_sym is True. The
problem with this is that there is no reasonable way to write a docstring
example for this. It seems that we can only do
A._is_alt_sym = True
A.alt_or_sym
'A'
which seems rather ugly. If you also think so, I'll go for what Aaron
suggested.
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