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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 check_or(state, *tests):
 """Test whether at least one SCT passes. If all of the tests fail, the feedback of the first test will be presented to the student. Args: state: State instance describing student and solution code, can be omitted if used with Ex() tests: one or more sub-SCTs to run :Example: The SCT below tests that the student typed either 'SELECT' or 'WHERE' (or both).. :: Ex().check_or( has_code('SELECT'), has_code('WHERE') ) The SCT below checks that a SELECT statement has at least a WHERE c or LIMIT clause.. :: Ex().check_node('SelectStmt', 0).check_or( check_edge('where_clause'), check_edge('limit_clause') ) """

    success = False
    first_feedback = None

    for test in iter_tests(tests):
        try:
            multi(state, test)
            success = True
        except TestFail as e:
            if not first_feedback:
                first_feedback = e.feedback
        if success:
            return state  # todo: add test

    state.report(first_feedback)