fine_art.py

# prognose
def sv_main(num_poly=20, skip=5):

    # in boilerplate, could be
    in_sockets = [[type(v), k, v] for k, v in vars().items()]

    # arbitrary user code
    p = [(i, i+1, i+7, i+6) for i in range(num_poly) if (i-skip) % (skip+1)]

    # out boilerplate
    out_sockets = [
        [str, p, 'Polygons']
    ]

    return in_sockets, out_sockets

if __name__ == "__main__":
    prognose = sv_main({0},{1})


################

import bpy
import ast

# get script from choice
script = 'prognose'
script_str = bpy.data.texts[script].as_string()

def find_variables(script_str):
    lines = script_str.split('\n')
    lines_a = [i for i in lines if script in i]

    import re
    if len(lines_a) == 1:
        pattern = '\{(\d+?)\}'
        f = re.findall(pattern, lines_a[0])
        num_params = len(f)
    else:
        return False, False

    lines_b = [i for i in lines if ('def sv_main') in i]
    if len(lines_b) == 1:
        pattern2 = '=(.+?)[,\)]'
        f2 = re.findall(pattern2, lines_b[0])
        # cast here
        param_values = f2
    else:
        return False, False

    return num_params, param_values

nparams, params = find_variables(script_str)
print(nparams, params)
if all([nparams, params]):
    params = list(map(ast.literal_eval, params))
    print(params)

exec(script_str.format(30, 5))

f = vars()
print('-----')
print(f['prognose'])