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不知道下面的代碼符不符合你的要求

dic1={"name":"paul","age":25};
dic2={"name":"mark","age":23};

dic={};

for key in dic1:
    if dic2[key] is not None:
        dic[key]=str(dic1[key])+","+str(dic2[key]);
    else:
        dic[key]=dic1[key];

for key in dic2:
    if dic[key] is None:
        dic[key]=dic2[key];

print(str(dic))

from collections import defaultdict
d = defaultdict(list)

d['key'].append(value1)   #value1 = d1['key']
d['key'].append(value2)

{ k:[a[k],b[k]] for k in a }