<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def parseSingleAttr(self, attrValue):
 """Parse a single CSS attribute source string, and returns the built CSS expression. Use to parse a tag's highly CSS-based attributes like 'font'. See also: parseAttributes """


        results = self.parseAttributes(temp=attrValue)
        if 'temp' in results[1]:
            return results[1]['temp']
        else:
            return results[0]['temp']