python module _char_handling_test
    interface
    subroutine charint(trans, info)
        callstatement (*f2py_func)(&trans, &info)
        callprotoargument char*, int*

        character, intent(in), check(trans=='N'||trans=='T'||trans=='C') :: trans = 'N'
        integer intent(out) :: info

    end subroutine charint
    end interface
end python module _char_handling_test