字典遍历 dict1.values，dict1.keys，dict1.items

'''  '''
dict1 = {'K1': 'Aa', 'K2': 'Bb', 'K3': 'Cc'}
for k in dict1.keys():
    print(k, end=' \t')
print()

for v in dict1.values():
    print(v, end='\t')
print()

for k, v in dict1.items():
    print(k, '-->', v, end=' | ')
print()

print(dict1.get('K12'), "NoThisKey")
'''  '''