Remove duplicated dict element in list, remove same dict element in tow list

 refer to code:

..

a=[{'a':1, 'b':3}, {'a':2, 'b':4}]

b=[{'a':3, 'b':3}, {'a':2, 'b':4}]

a.extend(b)

[dict(t) for t in {tuple(d.items()) for d in a}]

>> [{'a': 1, 'b': 3}, {'a': 2, 'b': 4}, {'a': 3, 'b': 3}]

..

Thank you.

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