Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium NeedsReview smichr
New issue 2976 by [email protected]: Tuple can hold bool but subs fails
http://code.google.com/p/sympy/issues/detail?id=2976
issue 2070 raises the issue that all Basic args should be Basic. Here is a
reason why;
Tuple(x,True).subs(x,y)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "sympy\core\basic.py", line 761, in subs
return self._subs_old_new(old, new)
File "sympy\core\cache.py", line 91, in wrapper
func_cache_it_cache[k] = r = func(*args, **kw_args)
File "sympy\core\basic.py", line 770, in _subs_old_new
return self._eval_subs(old, new)
File "sympy\core\basic.py", line 776, in _eval_subs
return self.func(*[arg._eval_subs(old, new) for arg in self.args])
AttributeError: 'bool' object has no attribute '_eval_subs'
This is handled in https://github.com/sympy/sympy/pull/690 's changes to
subs.
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