Comment #4 on issue 1894 by [email protected]: Xor(x, 1/y) doesn't work
http://code.google.com/p/sympy/issues/detail?id=1894
The same operator can have different meanings depending on the context.
In '1 & 2',
'&' means bitwise-and, not boolean-and as in 'x & y'. In contrast, 'And'
can only
have the boolean meaning, so it makes sense for 'And(...)' to return a
value in
circumstances where '&' is ambiguous. Now, And could inspect its arguments
and detect
that it's about to return a rather meaningless value, but this would impact
performance, and unnecessarily constrain the user thus violating
the "consenting
adults" philosophy. Hence the results you dislike.
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