python - create a new dict based on old dict -

i have following dict:

abc = {"type":"insecure","id":"1","name":"peter"} 

what want have new dict based on old dict in there no key "type" , key "id" changed "identity". new dict follows:

xyz = {"identity":"1","name":"peter"} 

the solution came follows:

abc = {"type":"insecure","id":"1","name":"peter"} xyz = {} black_list_values = set(("type","id")) k in abc:     if k not in blacklist_values:         xyz[k] = abc[k] xyz["identity"] = abc["id"] 

i wondering if fastest , efficient way that? right now, "abc" have 3 values. if "abc" bigger , have many values solution still efficient , fast.

you can use dict-comprehension:

abc = {"type":"insecure","id":"1","name":"peter"} black_list = {"type"} rename ={"id":"identity"}  #use mapping dictionary in case want rename multiple items dic = {rename.get(key,key) : val key ,val in abc.items() if key not in black_list} print dic 

output:

{'name': 'peter', 'identity': '1'}