Emulate Lua's dofile

pyconf_loader.py

import itertools

def load_pyconf_file(filename, env=None):
    f = '\t'.join(itertools.chain(("def __func():\n",), open(filename).readlines()))
    if env:
        exec(f, env)
        return env['__func']()
    else:
        exec(f)
        return __func()

if __name__ == "__main__":
    print(load_pyconf_file("test.pyconf", env={'config': {'N': 1000}}))

test.pyconf

from random import randint

data = [randint(0, 1e4) for i in range(config['N'])]

return {
    'data': data,
    'max': max(data)}