Python实现两个字典相加，不同key值保留，相同key值相加后保留

dica={'a':1,'b':2,'c':3,'d':4,'f':"hello"}
dicb={'b':3,'d':5,'e':7,'m':9,'k':'world'}
dic={}
for key in dica:
    if dicb.get(key):
        dic[key]=dica[key]+dicb[key]
    else:
        dic[key]=dica[key]
for key in dicb:
    if dica.get(key):
        pass
    else:
        dic[key]=dicb[key]
            
print(dic)

下面是运行结果

{'d': 9, 'k': 'world', 'e': 7, 'm': 9, 'f': 'hello', 'b': 5, 'c': 3, 'a': 1}