for x in list1:for y in list2:if x!=y:
l.append(y)print(set(l))
---------------------------------------------------------------------------
MemoryError Traceback (most recent call last)
<ipython-input-9-7490028fef1f> in <module>
2 for y in list2:
3 if x!=y:
----> 4 l.append(y)
5 print(set(l))
MemoryError: