diff --git a/libraries/utility.py b/libraries/utility.py
new file mode 100755
index 0000000..6faec6e
--- /dev/null
+++ b/libraries/utility.py
@@ -0,0 +1,105 @@
+# Copyright 2020 Open Networking Foundation
+# delivered by ADTRAN, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import absolute_import
+from __future__ import print_function
+import inspect
+import os
+
+# global definition of keys (find in given 'inventory_data')
+_NAME = 'name'
+_CHILDREN = 'children'
+_SENSOR_DATA = 'sensor_data'
+_ROOT = 'root'
+_INVENTORY = 'inventory'
+_UUID = 'uuid'
+
+
+def test(success):
+    if success is True:
+        return True
+    return False
+
+
+def unique():
+    """Returns the current filename and line number in our program."""
+    trace = str(os.path.basename(__file__) +
+                "[" + str(inspect.currentframe().f_back.f_lineno) + "]:")
+    return trace
+
+
+# check if given paramter exist in inventory data, search recursive
+def check_in_inventory_Component_data(inventory_data, name, element, value):
+    print(unique(), str(inventory_data), str(name), str(element), str(value))
+    if inventory_data.get(_NAME) == name and inventory_data.get(element) == value:
+        return True
+
+    for child in inventory_data[_CHILDREN]:
+        print(unique(), str(child))
+        if child.get(_NAME) == name and child.get(element) == value:
+            return True
+        if _SENSOR_DATA in child:
+            for sensor_data in child[_SENSOR_DATA]:
+                print(unique(), str(sensor_data))
+                if sensor_data.get(element) == value:
+                    return True
+        if _CHILDREN in child:
+            result = check_in_inventory_Component_data(child, name, element, value)
+            if result is True:
+                return result
+    return False
+
+
+# get uuid out of inventory data, search recursive
+def get_uuid_from_inventory_Component_data(inventory_data, searchFor):
+    print(unique(), str(inventory_data), ', ', str(searchFor))
+    if inventory_data.get(_NAME) == searchFor:
+        return inventory_data.get(_UUID)
+    for child in inventory_data[_CHILDREN]:
+        print(unique(), str(child))
+        result = None
+        if child.get(_NAME) == searchFor:
+            print(unique(), str(child[_NAME]))
+            result = child.get(_UUID)
+        print(unique(), child.keys())
+        if result is None and _CHILDREN in child:
+            result = get_uuid_from_inventory_Component_data(child, searchFor)
+        if result is not None:
+            return result
+    return None
+
+
+def get_uuid_from_Inventory_Element(inventory, searchFor):
+    for children in inventory[_INVENTORY][_ROOT][_CHILDREN]:
+        return get_uuid_from_inventory_Component_data(children, searchFor)
+    return None
+
+
+def check_Inventory_Element(inventory, name, element, value):
+    for childrens in inventory[_INVENTORY][_ROOT][_CHILDREN]:
+        return check_in_inventory_Component_data(childrens, name, element, value)
+    return False
+
+
+def getWord(line, number):
+    line_in_list = line.split()
+    if len(line_in_list) >= number-1:
+        return line_in_list[number-1]
+    return ""
+
+
+def decode(data):
+    decoded_data = data
+    print(unique(), str(decoded_data))