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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 append(self, name, value):
 """ Appends the given value to the list variable with the given name. :type name: string :param name: The name of the variable. :type value: object :param value: The appended value. """

        if self.vars is None:
            self.vars = {}
        if name in self.vars:
            self.vars[name].append(value)
        else:
            self.vars[name] = [value]