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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 visit_assert(self, node):
 """return an astroid.Assert node as string"""

        if node.fail:
            return "assert %s, %s" % (node.test.accept(self), node.fail.accept(self))
        return "assert %s" % node.test.accept(self)