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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 parse(code, mode='exec', **exception_kwargs):
 """Parse an expression into AST"""


    try:
        return _ast_util.parse(code, '<unknown>', mode)
    except Exception:
        raise exceptions.SyntaxException(
                    "(%s) %s (%r)" % (
                        compat.exception_as().__class__.__name__,
                        compat.exception_as(),
                        code[0:50]
                    ), **exception_kwargs)