I've tried to follow Volker's suggestion and prepare a python object for this purpose. However, I found a problem that I cannot manage. I must warn that my programming skills in python are rather limited (to say the less) and, therefore, I wouldn't be surprised if it were a silly issue.
The fact is that substitute (subs) function of my code works fine in SAGE but it doesn't in pure python because of object type when using 'sum' (line 52 of my code). It works if I use replace function instead. However, in this case it is SAGE which complains about. (I had to make further changes in code for pure python but they seem to work). In summary, now I have two codes: one for SAGE in SAGE-style (I took the idea of returning results in a dictionary from other SAGE functions, like "solve" or "find_fit", which work this way), and another in pure python style. Nevertheless, I think that a different strategy could be much better. Instead of preparing a different new function, it can be better to modify SAGE's "find_fit" to include new functionality. I've had a look on "find_fit" code and it seems not very difficult. However I have tried to directly load "find_fit" code (changing its name) in a notebook and found that the following line causes an error: from sage.calculus.calculus import SymbolicExpression, CallableSymbolicExpression from sage.calculus.calculus import SymbolicExpression, CallableSymbolicExpression ImportError: cannot import name SymbolicExpression Any hint? -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
