What difference does it make if it's an identity or not? My first instinct would be to make it a separate class (you can still make it a flag and use __new__).
Aaron Meurer On Jun 10, 2012, at 3:44 PM, Sergiu Ivanov <[email protected]> wrote: > And here comes part two of the show :-( How do I store a Boolean flag > in .args? Or should I make it an assumption? (wild eyes). > > What I need is as follows. I have a class Morphism, which can be set > to be an identity by specifying a flag at initialisation. This sounds > a lot like something assumption-related, but my experience with > assumptions is so very limited that I'm not sure. > > If this should really be a part of assumptions, could you please > suggest an example which I could follow? I know there are the "old" > and the "new" assumptions, but which one is which completely evades my > grasp. > > Sergiu > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/sympy?hl=en. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
