SW-328: StringIO doesn't like bytes anymore

SAS/SpecificationServices/lib/telescope_model_xml_generator_type1.py

@@ -22,7 +22,7 @@
 
 import os
 from lxml import etree
-from io import StringIO
+from io import BytesIO
 from .config import TELESCOPE_MODEL_TYPE1_XML
 import json
 
@@ -37,7 +37,7 @@ class TelescopeModelXMLGeneratorType1(object):
     def get_xml_tree(self, telescope_model):
         template_file_path = os.path.expandvars(TELESCOPE_MODEL_TYPE1_XML)
         template = self._read_telescope_model_template(template_file_path)
-        xmldoc = etree.parse(StringIO(template.encode('UTF-8')))
+        xmldoc = etree.parse(BytesIO(template.encode('UTF-8')))
 
         if not isinstance(telescope_model, TelescopeModel):
             raise TelescopeModelException("No telescope model of type TelescopeModel provided")