On Sat, Aug 13, 2022 at 6:06 AM Zohreh Karimzadeh <z.karimza...@gmail.com>
wrote:
> Dear sympy
> Thank millions for sharing and caring!
> I need to create and use symbols in dynamic way. Infact symbols are made
> based on user input and used in code so I must use f'strings to make them.
> As shown below:
> L=[ 'xCl', 'xNa']
> for j in range(len(L)):
> locals()[L[j]] = sympy.symbols(L[j])
> ss = xCl * xNaCl
> i = 'Na'
> j='Cl'
> gg =f"x{i}"* f"x{j}"
> print('gg', gg)
> But I got the following error
> TypeError: can't multiply sequence by non-int of type 'Symbol'
> Could possibly let me know how can do it??
>
You are trying to multiply the strings but you really want to multiply
symbols. Something like Symbol(f"x{i}")*Symbol(f"x{i}").
There should be no need to inject symbols into locals to do what you are
trying to do. Symbols do not have to be assigned to a variable to work.
Aaron Meurer
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