Hi all,
is there a way of saving (a list of) GAP objects so that they can be
recovered in a different session?
This is a minimal example of what we get right now. In my particular
situation, the group(s) are obtained from the Small Group Library
(contained in the database-gap optional package) so they cannot be
easily converted to sage groups:
sage: G = gap.SymmetricGroup(4)
sage: save(G, "Ggap")
sage: exit
And after opening sage again:
sage: H = load("Ggap")
sage: H
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
/Users/javier/code/<ipython console> in <module>()
/Applications/sage/local/lib/python2.7/site-packages/IPython/
Prompts.pyc in __call__(self, arg)
550
551 # and now call a possibly user-defined print
mechanism
--> 552 manipulated_val = self.display(arg)
553
554 # user display hooks can change the variable to be
stored in
/Applications/sage/local/lib/python2.7/site-packages/IPython/
Prompts.pyc in _display(self, arg)
576 return IPython.generics.result_display(arg)
577 except TryNext:
--> 578 return self.shell.hooks.result_display(arg)
579
580 # Assign the default display method:
/Applications/sage/local/lib/python2.7/site-packages/IPython/hooks.pyc
in __call__(self, *args, **kw)
139 #print "prio",prio,"cmd",cmd #dbg
140 try:
--> 141 ret = cmd(*args, **kw)
142 return ret
143 except ipapi.TryNext, exc:
/Applications/sage/local/lib/python2.7/site-packages/sage/misc/
displayhook.pyc in result_display(ip_self, obj)
148 # IPython's default result_display() uses the
IPython.genutils.Term.cout stream.
149 # See also local/lib/python2.6/site-packages/IPython/
hooks.py.
--> 150 print_obj(IPython.genutils.Term.cout, obj)
151
152 def displayhook(obj):
/Applications/sage/local/lib/python2.7/site-packages/sage/misc/
displayhook.pyc in print_obj(out_stream, obj)
140 if _check_tall_list_and_print(out_stream, obj):
141 return
--> 142 print >>out_stream, `obj`
143
144 def result_display(ip_self, obj):
/Applications/sage/local/lib/python2.7/site-packages/sage/interfaces/
gap.pyc in __repr__(self)
714 2
715 """
--> 716 s = ExpectElement.__repr__(self)
717 if s.find('must have a value') != -1:
718 raise RuntimeError, "An error occurred creating an
object in %s from:\n'%s'\n%s"%(self.parent().name(), self._create, s)
/Applications/sage/local/lib/python2.7/site-packages/sage/interfaces/
interface.pyc in __repr__(self)
869
870 def __repr__(self):
--> 871 self._check_valid()
872 try:
873 if self._get_using_file:
/Applications/sage/local/lib/python2.7/site-packages/sage/interfaces/
expect.pyc in _check_valid(self)
1157 raise ValueError, "The %s session in which
this object was defined is no longer running."%P.name()
1158 except AttributeError:
-> 1159 raise ValueError, "The session in which this
object was defined is no longer running."
1160 return P
1161
ValueError: The session in which this object was defined is no longer
running.
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