The following code yields a Traceback for no (to me) obvious reason. The
same happens on sagecell too. It seems to be a minimal case. For instance
removing the line "P = ..." or having less deeply nested loops does not
display this problem:
for A in PrimitiveGroups(3):
for G in A.normal_subgroups():
for U in G.conjugacy_classes_subgroups():
P = U.trivial_character()
for x in G.conjugacy_classes_subgroups():
for y in x.conjugacy_classes_subgroups():
pass
GAPError Traceback (most recent call last)
<ipython-input-1-c79c371f18a8> in <module>()
----> 1 load('./bug2.sage')
/home/mueller/local/sage-9.1/local/lib/python3.7/site-packages/sage/misc/persist.pyx
in sage.misc.persist.load (build/cythonized/sage/misc/persist.c:2538)()
142
143 if sage.repl.load.is_loadable_filename(filename):
--> 144 sage.repl.load.load(filename, globals())
145 return
146
[.................. SNIP .....................]
> 2514 sig_on()
2515 if n == 0:
2516 result = CALL_0ARGS(self.value)
GAPError: Error, usage: FreeGroup(<name1>,<name2>..) or FreeGroup(<rank>)
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