img.py 文件源码

def _lookup_win(self, key, basename, styles, fail=False):
        for suffix in ('', ' (TrueType)'):
            for style in styles:
                try:
                    valname = '%s%s%s' % (basename, style and ' '+style, suffix)
                    val, _ = _winreg.QueryValueEx(key, valname)
                    return val
                except EnvironmentError:
                    continue
        else:
            if fail:
                raise FontNotFound('Font %s (%s) not found in registry' %
                                   (basename, styles[0]))
            return None