def plain_text(self):
        "Plain text or ignored characters in encryption process."
        try:
            value = self.repr_to_obj(self.plain_text_entry.get(), '')
            assert isinstance(value, str)
            return value
        except:
            self.plain_text_entry.delete(0, END)
            return ''
Plain text or ignored characters in encryption process.
recipes/Python/578076_Markov/recipe-578076.py