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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 _var(ins):
 """ Defines a memory variable. """

    output = []
    output.append('%s:' % ins.quad[1])
    output.append('DEFB %s' % ((int(ins.quad[2]) - 1) * '00, ' + '00'))

    return output