Update Python example in README to reflect latest changes

README.md

@@ -217,16 +217,22 @@ for (auto val : pgmVec)
 ```python
 import ir2vec
 
+# IR2Vec Python APIs can be used in two ways. As shown below.
 initObj = ir2vec.initEmbedding("/path/to/file.ll", "fa", "p")
 progVector1 = ir2vec.getProgramVector(initObj)
 functionVectorMap1 = ir2vec.getFunctionVectors(initObj)
-instructionVectorsMap1 = ir2vec.getInstructionVectors(initObj)
+instructionVectorsList1 = ir2vec.getInstructionVectors(initObj)
 
 progVector2 = initObj.getProgramVector()
 functionVectorMap2 = initObj.getFunctionVectors()
-instructionVectorMap2 = initObj.getInstructionVectors()
+instructionVectorsList2 = initObj.getInstructionVectors()
 
-for fun, funcObj in functionVectorMap.items():
+# Both the approaches would result in same outcomes
+tolerance = 1e-6
+for val1, val2 in zip(progVector1, progVector2):
+    assert (abs(progVector1 - progVector2) <= tolerance)
+
+for fun, funcObj in functionVectorMap1.items():
     assert fun == funcObj["demangledName"]
 
     functionOutput1 = ir2vec.getFunctionVectors(
@@ -238,15 +244,8 @@ for fun, funcObj in functionVectorMap.items():
         funcObj["actualName"]
     )
 
-    assert(
-        functionOutput1[fun]["vector"] == pytest.approx(
-            functionOutput2[fun]["vector"], abs=ABS_ACCURACY
-        )
-    )
-
-    assert(
-        funcObj["vector"] == pytest.approx(functionOutput1[fun]["vector"], abs=ABS_ACCURACY)
-    )
+    for val1, val2 in zip(functionOutput1[fun]["vector"], functionOutput2[fun]["vector"]):
+        assert (abs(progVector1 - progVector2) <= tolerance)
 
 ```
 ## Binaries, Libraries and Wheels - Artifacts