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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_assignment_target_end(self, ast_module):
 """Returns position of 1st char after assignment traget. If there is no assignment, -1 is returned If there are more than one of any ( expressions or assigments) then a ValueError is raised. """


        if len(ast_module.body) > 1:
            raise ValueError("More than one expression or assignment.")

        elif len(ast_module.body) > 0 and \
                type(ast_module.body[0]) is ast.Assign:
            if len(ast_module.body[0].targets) != 1:
                raise ValueError("More than one assignment target.")
            else:
                return len(ast_module.body[0].targets[0].id)

        return -1