FileCookieJar.save(filename=None, ignore_discard=False, ignore_expires=False)
Save cookies to a file.
This base class raises NotImplementedError. Subclasses may leave this method unimplemented.
filename is the name of file in which to save cookies. If filename is not specified, self.filename is used (whose default is the value passed to the constructor, if any); if self.filename is None, ValueError is raised.
ignore_discard: save even cookies set to be discarded. ignore_expires: save even co