Re: n variables, diffrents upBounds

[Stuart Mitchell]

objective = sum(x * parameters["margin"][x]  for x in zip(x))

don't use zip

X = [LpVariable("x{}".format(i+1), lowBound = 0,  upBound = z[i], cat='Integer'  ) for i in range(len(lpVars))]

objective = sum(x * parameters["margin"][x]  for x in X)

Stuart Mitchell

PhD Engineering Science

Extraordinary Freelance Programmer and Optimisation Guru

www.stuartmitchell.com

On Thu, Sep 3, 2020 at 12:30 AM nicolas...@gmail.com <nicolas...@gmail.com> wrote:

Hello,

 This will be my last message for a few months

I'm setting my lp variables like this ( I need differents  upBound s, so I can't use

LpVariable.dicts(),I guess):

z=[40,80]

   x = [LpVariable("x{}".format(i+1), lowBound = 0,  upBound = z[i], cat='Integer'  ) for i in range(len(lpVars))]

How should  I write my objective function, , please :

objective = sum(x * parameters["margin"][x]  for x in zip(x))

prob +=  objective

is giving me

KeyError: (x1,)

The problem is that I can't use lpSum()

Thanks

--
New posters to this group are moderated which can take up to 48 hours, so please be patient if your first post takes a while to turn up.
---
You received this message because you are subscribed to the Google Groups "pulp-or-discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to pulp-or-discu...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/pulp-or-discuss/c0da92dc-630d-4d8c-81ec-782dfce7ed64n%40googlegroups.com.