我不断收到此错误：
SyntaxError: Non-ASCII character '\xe4' in file /var/www/mooimom_django/mooimom_tw/models.py on line 716, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details
因为：
subdistrict_destination_text = models.CharField(verbose_name=pgettext_lazy('taiwan-models Shopping_Cart', "Subdistrict Destination Text"), max_length=255, default='100 ???')
如何解决这个问题呢？谢谢