<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def art_msg(self, arttag, colorname, file=sys.stdout):
 """Wrapper for easy emission of the calendar borders"""

        self.msg(self.art[arttag], colorname, file=file)