python 字典问题求助第10到第12

[qq_40451076]

[qq_40451076]

第10 到第13

[一笑程序猴]

 #10
    e2f = {'dog':'chien','cat':'chat','walrus':'morse'}
    for key,val in e2f.items():
        print('%s==%s'%(key,val))
    #11
    walrus = e2f.get('walrus')
    print(walrus)
    #12
    f2e = {}
    for key, val in e2f.items():
        f2e[val] = key
    print(f2e)
    #13
    chien = f2e.get('chien')
    print(chien)