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        atom< ('[' | '(')
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                    'for' NAME 'in'
                    target=testlist_safe< any (',' any)+ [',']
                     >
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                >
            >
            |
            testlist_gexp< any
                comp_for<
                    'for' NAME 'in'
                    target=testlist_safe< any (',' any)+ [',']
                     >
                    [any]
                >
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