How to define python function from Julia side

[chengchingwen]

Is there any way to define python function from Julia side? or something equivalent to PyCall.@py_strthat can run arbitrary python code from Julia?

[icweaver]

I had a similar question a little bit ago, and I think the main takeaway was to just do something like this:

julia> using PythonCall

julia> @pyexec """
       global double
       def double(s):
           return s * 2
       """
julia> double(s) = @pyeval("double")(s)
double (generic function with 1 method)

julia> double("hello")
Python str: 'hellohello'

[chengchingwen]

Great, thanks!

[CarloLucibello]

This is a bit hard to discover, it should be given more prominence in the docs