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Labels: -NeedsReview
Comment #24 on issue 2125 by nicolas@gmail.com: Using Integers as
python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
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Comment #23 on issue 2125 by nicolas@gmail.com: Using Integers as
python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
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Comment #22 on issue 2125 by nicolas@gmail.com: Using Integers as
python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
One remark more:
In current master:
In [2]: S(2)*[1,1]
---
TypeErro
Comment #21 on issue 2125 by nicolas@gmail.com: Using Integers as
python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I opened a pull request:
https://github.com/sympy/sympy/pull/178
(Patch content has not change since
http://code.google.com/p/sympy/issues/detail?id=212
Comment #20 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
By the way, that one is actually issue 1838.
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Comment #19 on issue 2125 by Vinzent.Steinberg: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I prefer consistency with python over vectorization of sympy integers. If
someone wants this behavior, he can use a special object instead of a list.
So +1
Comment #18 on issue 2125 by ronan.l...@gmail.com: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
Given comment #13, I'm +1 on doing this.
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Comment #17 on issue 2125 by nicolas@gmail.com: Using Integers as
python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
So, is there an agreement on this ?
(The point is, I'm developing an interactive console, and I *really* liked
to be able to replace every python int by
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Comment #16 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
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Comment #15 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
Ah, sorry, I read the code wrong. Never mind that comment.
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Comment #14 on issue 2125 by nicolas.pourcelot: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
@Aaron:
"There's no point in testing it five times in Python 2.5+, so I would move
the for loop into the else block."
Sorry, I don't understand what you me
Comment #13 on issue 2125 by nicolas.pourcelot: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
Note that you can implement __index__ method, and still keep a special case
concerning lists:
class Two(object):
def __int__(self):
r
Comment #12 on issue 2125 by nicolas.pourcelot: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
"a=S(1); b = S(2); a/b gives 1/2, not 0."
In Python 3.x, 1/2 will return 0.5, and in Python 2.x, from future import
__truediv__ is already widely used imo.
Comment #11 on issue 2125 by nicolas.pourcelot: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
"a=S(1); b = S(2); a/b gives 1/2, not 0."
In Python 3.x, 1/2 will return 0.5, and in Python 2.x, from future import
__truediv__ is already widely used imo.
Updates:
Cc: ondrej.certik Ronan.Lamy
Comment #10 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I think the whole point of using SymPy Integers instead of Python ints is
that you *can* do something like 1/2 and get a Ra
Comment #9 on issue 2125 by smichr: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I see that it must have some smarts about when to and when not to return an
int because a=S(1); b = S(2); a/b gives 1/2, not 0. Are we ever going to be
bitten by a situat
Comment #8 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I agree with Nicolas in the OP. I think if we want to allow something like
vector multiplication, we should create our own Vector class. There is
much more benefit to
Comment #7 on issue 2125 by smichr: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I'm -1 on this. If this is allowed it means that we will lose the ability
to do sympy things with the Integers, like vector multiplication (should
that ever gain a favora
Comment #6 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
There's no point in testing it five times in Python 2.5+, so I would move
the for loop into the else block.
As long as sympy still runs and test still pass in Python 2.
Updates:
Labels: NeedsReview
Comment #5 on issue 2125 by nicolas.pourcelot: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
Yes. :)
Here is a tiny patch for review.
It implements this functionality for Python 2.5+.
(Since it isn't a core functi
Issue 2125: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
This issue is now blocking issue 1838.
See http://code.google.com/p/sympy/issues/detail?id=1838
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Comment #4 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
Interesting. What exactly does this __index__() method do? Does it just
return int(self)?
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Comment #3 on issue 2125 by nicolas.pourcelot: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
"(though you might have to implement it manually, like in issue 1838, if
the Python object doesn't handle rmul on its own)"
Once __index__() method is added
Comment #2 on issue 2125 by asmeurer: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
Similar is issue 1838.
Regarding S(2)*'1', this definitely should not return S(2). See the
discussion at
http://groups.google.com/group/sympy/browse_thread/thread/c94
Comment #1 on issue 2125 by Vinzent.Steinberg: Using Integers as python
slices.
http://code.google.com/p/sympy/issues/detail?id=2125
+1 for allowing Integer(2)*'1' == '11'.
Maybe someone thought this should be sympified instead (returning
Integer(2))?
Please feel free to propose changes
Status: Accepted
Owner: nicolas.pourcelot
CC: Vinzent.Steinberg, asmeurer, smichr
Labels: Type-Defect Priority-Medium
New issue 2125 by nicolas.pourcelot: Using Integers as python slices.
http://code.google.com/p/sympy/issues/detail?id=2125
I'd like to be able to use sympy Integers everywhere
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