append（键，值）如何在 python 上使用循环

Question

I want to create a new dict with a loop but I don't find the way to push key and value in loop with append. I try something like this but I'm still searching the good way.

frigo = {"mangue" : 2, "orange" : 8, "cassoulet" : 1, "thon" : 2, "coca" : 8, "fenouil" : 1, "lait" : 3}
new_frigo  = {} 

for i, (key, value) in enumerate(frigo.items()):
    print(i, key, value)
    new_frigo[i].append{key,value}

Answer 1

There's already a python function for that:

new_frigo.update(frigo)

No need for a loop! dict.update(other_dict) just goes and adds all content of the other_dict to the dict .

Anyway, if you wanted for some reason to do it with a loop,

for key, value in frigo.items():
  new_frigo[key] = value

would do that. Using an i here makes no sense - a dictionary new_frigo doesn't have indices, but keys.

Answer 2

You can use update to append the key and values in the dictionary as follows:

frigo = {"mangue": 2, "orange": 8, "cassoulet": 1, "thon": 2, "coca": 8, "fenouil": 1, "lait": 3}
new_frigo = {}

for i, (key, value) in enumerate(frigo.items()):
    new_frigo.update({key:value})

print(new_frigo)

Result:

{'mangue': 2, 'orange': 8, 'cassoulet': 1, 'thon': 2, 'coca': 8, 'fenouil': 1, 'lait': 3}