Status: New
Owner: asmeurer
Labels: Type-Defect Priority-Medium
New issue 1497 by asmeurer: (x+y)/-z does not automatically expand to (-x -
y)/z
http://code.google.com/p/sympy/issues/detail?id=1497
I am not sure if this was done intentionally, but the following
inconsistent output exists:
>>> print -(x+y)/z
(-x - y)/z
>>> print (x+y)/-z
-(x + y)/z
Normally we wouldn't want to distribute numbers from the denominator, such
as
>>> print (x+y)/(2*z) # We don't want this
(x/2 + y/2)/z
but I think there should be an exception for when the coefficient of the
denominator is NegativeOne.
I have attached a patch that fixes this, but it breaks tests. I don't have
time to look into the tests, so unless someone
wants to look into this, it will have to stay the way that it is.
Attachments:
0001-Made-x-y-z-automatically-return-x-y-z.patch 1.1 KB
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