[Python API] Deprecation of DataPtr.creator_layer and DataPtr.input_to properties (#1905)

inference-engine/ie_bridges/python/src/openvino/inference_engine/ie_api.pyx

@@ -736,6 +736,8 @@ cdef class DataPtr:
 
     @property
     def creator_layer(self):
+        warnings.warn("'creator_layer' property of DataPtr class is deprecated and is going to be removed in 2021.2.",
+                      DeprecationWarning)
         cdef C.CNNLayerWeakPtr _l_ptr
         cdef IENetLayer creator_layer
 
@@ -752,6 +754,8 @@ cdef class DataPtr:
 
     @property
     def input_to(self):
+        warnings.warn("'input_to' property of DataPtr class is deprecated and is going to be removed in 2021.2.",
+                      DeprecationWarning)
         cdef map[string, C.CNNLayerPtr] _l_ptr_map
         cdef IENetLayer input_to
 

inference-engine/ie_bridges/python/tests/test_DataPtr.py

@@ -68,11 +68,12 @@ def test_input_to(recwarn):
     input_to = net.layers['26'].out_data[0].input_to
     assert len(input_to) == 1
     assert input_to[0].name == '27'
-    assert len(recwarn) == 1
+    assert len(recwarn) == 2
     assert recwarn.pop(DeprecationWarning)
 
 
-def test_input_to_via_input_info():
+def test_input_to_via_input_info(recwarn):
+    warnings.simplefilter("always")
     ie = IECore()
     net = ie.read_network(model=test_net_xml, weights=test_net_bin)
     input_infos = net.input_info
@@ -80,6 +81,8 @@ def test_input_to_via_input_info():
     input_to = input_infos['data'].input_data.input_to
     assert len(input_to) == 1
     assert input_to[0].name == '19/Fused_Add_'
+    assert len(recwarn) == 1
+    assert recwarn.pop(DeprecationWarning)
 
 
 def test_input_to_via_inputs(recwarn):
@@ -91,11 +94,12 @@ def test_input_to_via_inputs(recwarn):
     input_to = inputs['data'].input_to
     assert len(input_to) == 1
     assert input_to[0].name == '19/Fused_Add_'
-    assert len(recwarn) == 1
+    assert len(recwarn) == 2
     assert recwarn.pop(DeprecationWarning)
 
 
-def test_creator_layer():
+def test_creator_layer(recwarn):
+    warnings.simplefilter("always")
     ie = IECore()
     net = ie.read_network(model=test_net_xml, weights=test_net_bin)
     outputs = net.outputs
@@ -104,3 +108,5 @@ def test_creator_layer():
     params = creator_layer.params
     params['originalLayersNames'] == 'fc_out'
     params['axis'] == '1'
+    assert len(recwarn) == 1
+    assert recwarn.pop(DeprecationWarning)