human
Solve the following python programming problem given the following code:
@lower('+', types.Array)
def array_positive_impl(context, builder, sig, args):
assistant
#Here is the Python code you requested.

    """Lowering function for +(array) expressions.  Defined here
    (numba.targets.npyimpl) since the remaining array-operator
    lowering functions are also registered in this module.
    """
    class _UnaryPositiveKernel(_Kernel, ):
        def generate(self, *args):
            [val] = args
            return val
    return numpy_ufunc_kernel(context, builder, sig, args, _UnaryPositiveKernel, explicit_output=False)