Re: [Python-ideas] Symbolic expressions (or: partials and closures from the inside out)

2012-01-13 Thread Nathan Rice
On Fri, Jan 13, 2012 at 8:45 AM, Devin Jeanpierre wrote: > On Thu, Jan 12, 2012 at 3:45 PM, Nathan Rice > wrote: >> I'm interested in fixing both issues. I believe both issues I've had >> could be solved by having a robust "symbolic object".  These objects >> would basically usable like ordinary

Re: [Python-ideas] Symbolic expressions (or: partials and closures from the inside out)

2012-01-13 Thread Devin Jeanpierre
On Thu, Jan 12, 2012 at 3:45 PM, Nathan Rice wrote: > I'm interested in fixing both issues. I believe both issues I've had > could be solved by having a robust "symbolic object". These objects > would basically usable like ordinary objects, however upon any > attribute access or other form of int

Re: [Python-ideas] Symbolic expressions (or: partials and closures from the inside out)

2012-01-12 Thread Nathan Rice
>> I have been writing a lot of code lately that involves creating >> symbolic expressions of one form or another, which are then fully >> evaluated at a later time.  Examples of this include Elementwise, > > > Python is designed for concrete, rather than symbolic computation. But the > latter has

Re: [Python-ideas] Symbolic expressions (or: partials and closures from the inside out)

2012-01-12 Thread Chris Rebert
On Thu, Jan 12, 2012 at 3:03 PM, Terry Reedy wrote: > On 1/12/2012 3:45 PM, Nathan Rice wrote: > print isinstance(3, const) >> >> True > > > A Contraints instance defines a set. 'const' is the set 'odd_ge_3' > It would look better if you used standard syntax and do the inclusion check > in a