Simple function checking if the passed object contains a valid sc3ml 0.7 file. Returns True of False. The test is not exhaustive - it only checks the root tag but that should be good enough for most real world use cases. If the schema is used to test for a StationXML file, many real world files are false negatives as they don’t adhere to the standard. :param path_or_file_object: File name or file like object.