def set_secure(self, section, option, value):
if self.keyring_available:<EOL><INDENT>s_option = "<STR_LIT>" % (section, option)<EOL>self._unsaved[s_option] = ('<STR_LIT>', value)<EOL>value = self._secure_placeholder<EOL><DEDENT>ConfigParser.set(self, section, option, value)<EOL>
Set an option and mark it as secure.

        Any subsequent uses of 'set' or 'get' will also
        now know that this option is secure as well.