Waldek,
I cannot believe that suppression of certain output is their problem.
Otherwise, it should be possible to extract some code from jfricas in
order to mark the various output types and do separate things with them
just as I do in jfricas.
The reason seems to be that the connection sage <--> fricas seems to be
broken with the fricas debian package that lives on GCL.
Maybe I haven't yet understood their real problem, but I can reproduce
that
sage: fricas('3')
leads to (see attachment) on xubuntu 22.04.
I very much believe that it is
/usr/lib/python3/dist-packages/sage/interfaces/fricas.py where the
problem is to be located, because
sage: fricas_console()
seems to work fine with GCL.
However, why fricas.py would behave differently with GCL in contrast to
SBCL, is a mystery for me. I somehow fear that it is a problem with the
expect function and the fricas.py script not understanding what comes
back from FriCAS (in the GCL case). It would probably be worthwhile to
test whether fricas.py receives the same in SBCL vs. GCL case.
Ralf
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diamond:~>fricas --version
FriCAS 1.3.7
based on gcl 2.6.12
diamond:~>sage
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.5, Release Date: 2022-01-30 │
│ Using Python 3.10.4. Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: fricas('3')
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
/usr/lib/python3/dist-packages/sage/interfaces/expect.py in __init__(self,
parent, value, is_name, name)
1469 try:
-> 1470 self._name = parent._create(value, name=name)
1471 # Convert ValueError and RuntimeError to TypeError for
/usr/lib/python3/dist-packages/sage/interfaces/interface.py in _create(self,
value, name)
512 name = self._next_var_name() if name is None else name
--> 513 self.set(name, value)
514 return name
/usr/lib/python3/dist-packages/sage/interfaces/fricas.py in set(self, var,
value)
674 output = self.eval(cmd, reformat=False)
--> 675 self._check_errors(value, output)
676
/usr/lib/python3/dist-packages/sage/interfaces/fricas.py in _check_errors(self,
line, output)
569 output = output.replace(old, new)
--> 570 raise RuntimeError("An error occurred when FriCAS evaluated
'%s':\n%s" % (line, output))
571
RuntimeError: An error occurred when FriCAS evaluated '3':
sage0:=3;
Function declaration sageprint : InputForm -> String has been added to
workspace.
During handling of the above exception, another exception occurred:
TypeError Traceback (most recent call last)
<ipython-input-1-c65591fc1e1e> in <module>
----> 1 fricas('3')
/usr/lib/python3/dist-packages/sage/interfaces/interface.py in __call__(self,
x, name)
293
294 if isinstance(x, str):
--> 295 return cls(self, x, name=name)
296 try:
297 # Special methods do not and should not have an option to
/usr/lib/python3/dist-packages/sage/interfaces/expect.py in __init__(self,
parent, value, is_name, name)
1473 except (RuntimeError, ValueError) as x:
1474 self._session_number = -1
-> 1475 raise TypeError(*x.args)
1476 except BaseException:
1477 self._session_number = -1
TypeError: An error occurred when FriCAS evaluated '3':
sage0:=3;
Function declaration sageprint : InputForm -> String has been added to
workspace.
