Question: How to combine two list into one?

List combine

#How to combine two separate list below into a one list?
#Have dictionary data within list


a = [{'A':23},{'B':50}]

b = [{'A':50},{'B':100},{'C':150}]

#Result i need

c = [{'A':23,50},{'B':50,100},{'C':150}]

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#adding two dictionary c =dict(a.items() + b.items()) but now sure how to work with list that has dictionary embeded???