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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 kernel_type(self, kernel_type):
 """Sets the kernel_type of this KernelPushRequest. The type of kernel. Cannot be changed once the kernel has been created # noqa: E501 :param kernel_type: The kernel_type of this KernelPushRequest. # noqa: E501 :type: str """

        if kernel_type is None:
            raise ValueError("Invalid value for `kernel_type`, must not be `None`")  # noqa: E501
        allowed_values = ["script", "notebook"]  # noqa: E501
        if kernel_type not in allowed_values:
            raise ValueError(
                "Invalid value for `kernel_type` ({0}), must be one of {1}"  # noqa: E501
                .format(kernel_type, allowed_values)
            )

        self._kernel_type = kernel_type