e2f = {"dog": "chien", "cat": "chat", "walrus": "morse"}
f2e = {}
for key, val in e2f.items():
    f2e[val] = key
print(f2e["chien"])

969571fcb12eba11a0266fdbf44da56799aad83d
<mask token>

<mask token>
for key, val in e2f.items():
    f2e[val] = key
print(f2e['chien'])

e2f = {'dog': 'chien', 'cat': 'chat', 'walrus': 'morse'}
f2e = {}
for key, val in e2f.items():
    f2e[val] = key
print(f2e['chien'])

e2f = {"dog": "chien", "cat": "chat", "walrus": "morse"}
f2e = {}
for key, val in e2f.items():
    f2e[val] = key
print(f2e["chien"])
