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### convert expression to function

Hola,

is there a way to convert symbolic expression to proper functions?

E. g. s = sin(x) into x |--> sin(x)

So far I've been using f(x) = s(x), however, deprection warnings occur:

DeprecationWarning: Substitution using function-call syntax and unnamed arguments is deprecated and will be removed from a future release of Sage; you can use named arguments instead, like EXPR(x=..., y=...)