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New issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
(1 + x*(x + y)).expand(deep=False)
x*(x + y) + 1
I thought that not-deep meant do something on all args of Add a
Comment #1 on issue 3710 by asmeu...@gmail.com: shallow expansion
feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
The old behavior was accidental. The new behavior is simple: deep=False
only expands the top-level expression. Recall the discussion at
https://github.com/sym
Comment #2 on issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
In the case of expand_mul it is reasonable to want a flat expression which,
after expanding, would have nothing expandable. But without entering
anything but an Ad
Updates:
Cc: matt...@gmail.com
Comment #3 on issue 3710 by asmeu...@gmail.com: shallow expansion
feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
I would refactor such things out to a separate function that does shallow
application of non-deep functions. Doing that w
Comment #4 on issue 3710 by asmeu...@gmail.com: shallow expansion
feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
I remember now. It was use(). There are similar functions in the same file
too.
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Comment #5 on issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
There is epath, too.
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Comment #6 on issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
There is only function 'use' in the simplify.simplify.traversaltools.py
file. And this is how it can be used to give the shallow processing of an
expression:
e
Comment #7 on issue 3710 by asmeu...@gmail.com: shallow expansion
feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
What's the motivation for this specific level of expansion?
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Comment #8 on issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
This is the intended expansion in the codebase when expand_mul is used.
Since deep is automatically True, this also recurses through the entire
tree making changes
Comment #9 on issue 3710 by asmeu...@gmail.com: shallow expansion
feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
This is the intended expansion in the codebase when expand_mul is used.
Since deep is automatically True, this also recurses through the entire
tree making ch
Comment #10 on issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
want to expand the top level expression as a polynomial, right
yes. Both mul and poly expansion are intended for the top level (as I've
defined it)
bottom_up
Updates:
Status: WontFix
Comment #11 on issue 3710 by smi...@gmail.com: shallow expansion feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
Closing as won't fix. If you do a shallow expansion wrt Mul, you may have
factors in terms that will be the same if the expansion w
Comment #12 on issue 3710 by asmeu...@gmail.com: shallow expansion
feature/bug
http://code.google.com/p/sympy/issues/detail?id=3710
If you do a shallow expansion wrt Mul, you may have factors in terms that
will be the same if the expansion were done deeply
I'm confused. What is an example
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