Method read_file

Lib/optparse.py:867–870

(self, filename, mode="careful")

        self._update(vars(mod), mode)

    def read_file(self, filename, mode="careful"):
        vars = {}
        exec(open(filename).read(), vars)
        self._update(vars, mode)

    def ensure_value(self, attr, value):
        if not hasattr(self, attr) or getattr(self, attr) is None: