Closed
Description
Steps To Reproduce
$ sage
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 10.7.beta6, Release Date: 2025-06-14 │
│ Using Python 3.12.10. Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Warning: this is a prerelease version, and it may be unstable. ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
sage: var('x,y')
(x, y)
sage: u = function('u')(x,y)
sage: save(u, 'u')
sage: load('u')
Expected Behavior
u(x,y)
Actual Behavior
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
File ~/src/sage/src/sage/symbolic/function_factory.py:110, in function_factory(name, nargs, latex_name, conversions, evalf_params_first, eval_func, evalf_func, conjugate_func, real_part_func, imag_part_func, derivative_func, tderivative_func, power_func, series_func, print_func, print_latex_func)
107 raise ValueError(func_name + "_func" + " parameter must be callable")
108 setattr(NewSymbolicFunction, '_%s_' % func_name, func)
--> 110 return NewSymbolicFunction()
File ~/src/sage/src/sage/symbolic/function_factory.py:55, in function_factory.<locals>.NewSymbolicFunction.__init__(self)
46 def __init__(self):
47 """
48 EXAMPLES::
49
(...) 53 f(2, 4)
54 """
---> 55 SymbolicFunction.__init__(self, name, nargs, latex_name,
56 conversions, evalf_params_first)
File ~/src/sage/src/sage/symbolic/function.pyx:1217, in sage.symbolic.function.SymbolicFunction.__init__()
1215 """
1216 self.__hinit = False
-> 1217 Function.__init__(self, name, nargs, latex_name, conversions,
1218 evalf_params_first)
1219
File ~/src/sage/src/sage/symbolic/function.pyx:218, in sage.symbolic.function.Function.__init__()
216 ValueError: eval_func parameter must be callable
217 """
--> 218 self._name = name
219 self._alt_name = alt_name
220 self._nargs = nargs
TypeError: Expected unicode, got bytes
Exception ignored in: 'sage.symbolic.expression.py_get_serial_for_new_sfunction'
Traceback (most recent call last):
File "/home/rburing/src/sage/src/sage/symbolic/function_factory.py", line 110, in function_factory
return NewSymbolicFunction()
^^^^^^^^^^^^^^^^^^^^^
File "/home/rburing/src/sage/src/sage/symbolic/function_factory.py", line 55, in __init__
SymbolicFunction.__init__(self, name, nargs, latex_name,
File "sage/symbolic/function.pyx", line 1217, in sage.symbolic.function.SymbolicFunction.__init__
File "sage/symbolic/function.pyx", line 218, in sage.symbolic.function.Function.__init__
TypeError: Expected unicode, got bytes
conjugate(x)
Additional Information
No response
Environment
- OS: Ubuntu 24.04.2 LTS
- Sage Version: 10.7.beta6 (using conda for dependencies)
Checklist
- I have searched the existing issues for a bug report that matches the one I want to file, without success.
- I have read the documentation and troubleshoot guide