Thanks again for a near instantaneous reply!
On 15/04/2022 23:39, Aaron Meurer wrote:
You are calling arg[0], but arg is already the argument of the
function. The [0] is typically only used when you have *args to accept
an arbitrary number of arguments and you want to get the first one.
OK - that has fixed it after I corrected another minor error!
Just one possible use for this mechanism would be to create a function
gamma() (say) which would contain all the original code from gamma in
SymPy, and then add calls to print to clarify how it works. I assume
that the line
import gamma from gamma
would replace the official version with this modification and everything
would work as expected?
David
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