<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def set_errors(self):

 		"""Set errors markup.
 		"""

		if not self.field.errors or self.attrs.get("_no_errors"):
			return
		
		self.values["class"].append("error")

		for error in self.field.errors:
			self.values["errors"] += ERROR_WRAPPER % {"message": error}