Garbage Collection in del function, Updated union of lists function

ocl.py

@@ -535,7 +535,11 @@ def union(s,t) :
 def unionSequence(s,t) :
   res = []
   res.extend(s)
-  res.extend(t)
+
+  # Add all elements of t that are not in s (Prevents duplicates)
+  new_res = [x for x in t if x not in s]
+  res.extend(new_res)
+
   return res
 
 

oclfile.py

@@ -4,13 +4,24 @@
 import pickle
 import socket
 import tempfile
+import gc 
+
 
 from enum import Enum
 
 
 def free(x):
   del x
 
+  # Garbage Collection
+  try:
+    gc.collect()
+  except Exception as e:
+    pass 
+  else:
+    pass
+
+
 
 class OclFile:
   oclfile_instances = []