Python中如何对数组取并集交集

Python对数组取并集倒是挺简单的，但是数组中的元素不是像1234这样简单的数据，数组中的元素是字典，然后我怎么根据数组中字典的其中一个key来取并集

代码如下  怎么根据title取并集

myarry = [
    dict(
        title="11",
        sort=1
    ),
    dict(
        title="22",
        sort=2
    ),
    dict(
        title="33",
        sort=3
    ),
    dict(
        title="44",
        sort=4
    ),
    dict(
        title="55",
        sort=5
    ),
    dict(
        title="66",
        sort=6
    )
]
myarrys = [
    dict(
        title="55",
        sort=11
    ),
    dict(
        title="66",
        sort=22
    ),
    dict(
        title="77",
        sort=33
    ),
    dict(
        title="88",
        sort=44
    ),
    dict(
        title="99",
        sort=55
    ),
    dict(
        title="00",
        sort=66
    )
]
a=list(set(myarry).union(set(myarrys)))
print(a)

#!/bin/python3
#coding: utf-8

myarry = [
    dict(
        title="11",
        sort=1
    ),
    dict(
        title="22",
        sort=2
    ),
    dict(
        title="33",
        sort=3
    ),
    dict(
        title="44",
        sort=4
    ),
    dict(
        title="55",
        sort=5
    ),
    dict(
        title="66",
        sort=6
    )
]

myarrys = [
    dict(
        title="55",
        sort=11
    ),
    dict(
        title="66",
        sort=22
    ),
    dict(
        title="77",
        sort=33
    ),
    dict(
        title="88",
        sort=44
    ),
    dict(
        title="99",
        sort=55
    ),
    dict(
        title="00",
        sort=66
    )
]

a=list({i['title']:i for i in (myarrys + myarry)}.values())

print(a)

https://stackoverflow.com/questions/18554012/intersecting-two-dictionaries-in-python