script_node.py

import ast

t = """
# here is where one might create polygon index loops
types = int, int
vert_indices = [(i, i+1, i+7, i+6) for i in range({0}) if (i-{1}) % ({1}+1)]
"""

def local_temp(variable_inputs):
    t = bpy.data.texts[self.text].as_string()
    exec(t.format(*variable_inputs))
    return vars()

a = local_temp((30, 5))
print(a)