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【Python】 リストの差分を求める

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重複データを保持せずに差分を求める

l1 = ['a', 'b', 'c', 'd','a','b']
l2 = ['a', 'c']
result = list(set(l1) - set(l2))
print(result)

<実行結果>
['b', 'd']

重複データを保持して差分を求める

l1 = ['a', 'b', 'c', 'd','a','b']
l2 = ['a', 'c']
result = list(filter(lambda x: x not in l2, l1))
print(result)

<実行結果>
['b', 'd', 'b']

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