registerups.py: cosmetic changes

registerups/registerups.py

@@ -37,7 +37,12 @@ class cps_ups:
             '" bid="' + self.bank_id + \
             '"/>'
         digest = hmac.new(self.secret_key.encode(), msg = data_tag.encode('utf-8')).hexdigest().upper()
-        xml = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><setup>' + data_tag + '<auth code="' + digest + '"/></setup>'
+        xml = '<?xml version="1.0" ' \
+            'encoding="UTF-8" ' \
+            'standalone="yes"?>' \
+            '<setup>' + data_tag + \
+            '<auth code="' + digest + \
+            '"/></setup>'
         return(xml)
     def register(self,
                  ip_address,