Julien Rioux wrote:
>> Dear list,
>>
>> I found some more problems when using non-commutative symbols and
>> subs and I wonder if I should reopen issue 2022 or open a new issue?
>>
Before the changes of 2039 you would get:
h[2] >>> (a*A).subs(a*a*A,B)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "sympy\core\basic.py", line 705, in subs
return self._subs_old_new(old, new)
File "sympy\core\cache.py", line 85, in wrapper
func_cache_it_cache[k] = r = func(*args, **kw_args)
File "sympy\core\basic.py", line 714, in _subs_old_new
return self._eval_subs(old, new)
File "sympy\core\mul.py", line 897, in _eval_subs
comms_final.remove(ele)
ValueError: list.remove(x): x not in list
Now you get the wrong result. I'll look into this.
/c
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