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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get(self,style):
 """ what's the value of a style at the current stack level"""

        level = len(self.stack) -1
        while level >= 0:
            if style in self.stack[level]:
                return self.stack[level][style]
            else:
                level = level - 1
        return None