On Sun, Apr 26, 2015 at 12:27 AM, Loïc Gouarin <[email protected]> wrote:
> Hi,
>
> I would like to parse a string expression like that
>
> from sympy.parsing.sympy_parser import parse_expr
> parse_expr("m[0][0]")
>
> But I have an error with 'Symbol' object does not support indexing.
>
> If I do
>
> sympy.Symbol("m[0][0]")
>
> everything is ok.
>
> I try to write my own transformation funtion that takes the "m[x][y]" and
> creates a Symbol and add it to the standard_transformations in parse_expr
> but the problem is still the same because the problem is in auto_symbol and
> it parses again my string 'm[x][y]'.
Does it work if you transform it literally to sympy.Symbol("m[0][0]")?
Aaron Meurer
>
> Could you tell me how I can do that ?
>
> Thanks,
> Loic
>
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