Python - 如何使用對list使用去重複、交集、聯集 - How to use unique, intersection, union lists in Python

Information：

System version ： Windows 10 64-bit
Python version ： Python 3.6.0 :: Anaconda 4.3.1 (64-bit)

Code:

def unique(a):
    return list(set(a))

def intersect(a, b):
    return list(set(a) & set(b))

def union(a, b):
    return list(set(a) | set(b))

a = [1,2,3,4,4]
b = [2,3,5]
print( unique(a) )
print( intersect(a, b) )
print( union(a, b) )

Result:

[1, 2, 3, 4]
[2, 3]
[1, 2, 3, 4, 5]

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