擅长:python、mysql、java
<pre><code>petDict = {
'pet1': {
'type': 'dog',
'name': 'scooby',
'age': '4'
},
'pet2': {
'type': 'cat',
'name': 'milo',
'age': '1'
},
'pet3': {
'type': 'fish',
'name': 'danny',
'age': '2'
}
}
print('Here are my pets:')
for petNum, petInfo in petDict.items():
print('name: ', petInfo["name"])
</code></pre>
<p>输出:</p>
<pre><code>Here are my pets:
name: scooby
name: milo
name: danny
</code></pre>