Public bug reported:
### Steps To Reproduce
```
sage:fricas('3')
```
### Expected Behavior
```
3
```
### Actual Behavior
```
sage: fricas(3)
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
File ~/sage/src/sage/interfaces/expect.py:1519, in ExpectElement.__init__(self,
parent, value, is_name, name)
1518 try:
-> 1519 self._name = parent._create(value, name=name)
1520 # Convert ValueError and RuntimeError to TypeError for
1521 # coercion to work properly.
File ~/sage/src/sage/interfaces/interface.py:520, in Interface._create(self,
value, name)
519 name = self._next_var_name() if name is None else name
--> 520 self.set(name, value)
521 return name
File ~/sage/src/sage/interfaces/fricas.py:681, in FriCAS.set(self, var, value)
680 output = self.eval(cmd, reformat=False)
--> 681 self._check_errors(value, output)
File ~/sage/src/sage/interfaces/fricas.py:574, in FriCAS._check_errors(self,
line, output)
573 output = output.replace(old, new)
--> 574 raise RuntimeError("An error occurred when FriCAS evaluated
'%s':\n%s" % (line, output))
576 # or even an error
RuntimeError: An error occurred when FriCAS evaluated '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)
Cell In[1], line 1
----> 1 fricas(Integer(3))
File ~/sage/src/sage/misc/lazy_import.pyx:397, in
sage.misc.lazy_import.LazyImport.__call__()
395 True
396 """
--> 397 return self.get_object()(*args, **kwds)
398
399 def __repr__(self):
File ~/sage/src/sage/interfaces/interface.py:306, in Interface.__call__(self,
x, name)
299 return cls(self, x, name=name)
300 try:
301 # Special methods do not and should not have an option to
302 # set the name directly, as the identifier assigned by the
303 # interface should stay consistent. An identifier with a
304 # user-assigned name might change its value, so we return a
305 # new element.
--> 306 result = self._coerce_from_special_method(x)
307 return result if name is None else result.name(new_name=name)
308 except TypeError:
File ~/sage/src/sage/interfaces/interface.py:334, in
Interface._coerce_from_special_method(self, x)
332 s = '_gp_'
333 try:
--> 334 return (x.__getattribute__(s))(self)
335 except AttributeError:
336 return self(x._interface_init_())
File ~/sage/src/sage/structure/sage_object.pyx:793, in
sage.structure.sage_object.SageObject._fricas_()
791 import sage.interfaces.fricas
792 G = sage.interfaces.fricas.fricas
--> 793 return self._interface_(G)
794
795 def _fricas_init_(self):
File ~/sage/src/sage/structure/sage_object.pyx:723, in
sage.structure.sage_object.SageObject._interface_()
721 except Exception:
722 raise NotImplementedError("coercion of object %s to %s not
implemented" % (repr(self), I))
--> 723 X = I(s)
724 if c:
725 try:
File ~/sage/src/sage/interfaces/interface.py:299, in Interface.__call__(self,
x, name)
296 pass
298 if isinstance(x, str):
--> 299 return cls(self, x, name=name)
300 try:
301 # Special methods do not and should not have an option to
302 # set the name directly, as the identifier assigned by the
303 # interface should stay consistent. An identifier with a
304 # user-assigned name might change its value, so we return a
305 # new element.
306 result = self._coerce_from_special_method(x)
File ~/sage/src/sage/interfaces/expect.py:1524, in ExpectElement.__init__(self,
parent, value, is_name, name)
1522 except (RuntimeError, ValueError) as x:
1523 self._session_number = -1
-> 1524 raise TypeError(*x.args)
1525 except BaseException:
1526 self._session_number = -1
TypeError: An error occurred when FriCAS evaluated '3':
Function declaration sageprint : InputForm -> String has been added to
workspace.
sage: fricas(3)
<repr(<sage.interfaces.fricas.FriCASElement at 0x73b6eae59350>) failed:
AttributeError: 'NoneType' object has no attribute 'rstrip'>
sage: fricas(3)
<repr(<sage.interfaces.fricas.FriCASElement at 0x73b6ea563610>) failed:
AttributeError: 'NoneType' object has no attribute 'rstrip'>
sage: fricas(3)
<repr(<sage.interfaces.fricas.FriCASElement at 0x73b6eaa090d0>) failed:
RuntimeError: An error occurred when FriCAS evaluated 'sage3':
There are no library operations named category_for
Use HyperDoc Browse or issue
)what op category_for
to learn if there is any operation containing " category_for " in
its name.
Cannot find a definition or applicable library operation named
category_for with argument type(s)
PositiveInteger
Perhaps you should use "@" to indicate the required return type, or
"$" to specify which version of the function you need.>
```
### Additional Information
I do not know it is a bug in sage or a bug in the Ubuntu 25.04's fricas.
Can someone check it? But if we use ```sage -i fricas```. The problem is
solved. We need to report to Ubuntu. It is a very strange bug.
### Environment
- **OS**: Ubuntu 25.04
- **Sage Version**: 10.7
### Checklist
- [x] I have searched the existing issues for a bug report that matches the one
I want to file, without success.
- [x] I have read the documentation and troubleshoot guide
** Affects: fricas (Ubuntu)
Importance: Undecided
Status: Confirmed
** Changed in: fricas (Ubuntu)
Status: New => Confirmed
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2120312
Title:
An incompatible bug in the sage.interface.fricas and the system's
FriCAS in Ubuntu 25.04
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https://bugs.launchpad.net/ubuntu/+source/fricas/+bug/2120312/+subscriptions
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