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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 number_of_statements(self, n):
 """Compute the number of AST statements contained in a node."""

        stmt_type = n.type
        if stmt_type == syms.compound_stmt:
            return 1
        elif stmt_type == syms.stmt:
            return self.number_of_statements(n.children[0])
        elif stmt_type == syms.simple_stmt:
            # Divide to remove semi-colons.
            return len(n.children) // 2
        else:
            raise AssertionError("non-statement node")