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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 _process_image_id(self):
 """ Split image id into component values. Example: SUSE:SLES:12-SP3:2018.01.04 Publisher:Offer:Sku:Version Raises: If image_id is not a valid format. """

        try:
            image_info = self.image_id.strip().split(':')
            self.image_publisher = image_info[0]
            self.image_offer = image_info[1]
            self.image_sku = image_info[2]
            self.image_version = image_info[3]
        except Exception:
            self.image_publisher = None