code fragment Six from
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>>> data = {}
>>> data.get('cat', 1)
1
>>> data
{}
>>> data.setdefault('cat', 1)
1
>>> data
{'cat': 1}
>>> data.setdefault('dog', []).append(2)
>>> data
{'dog': [2], 'cat': 1}
>>> data['bear'] = 1 + data.get('bear', 0)
>>> data
{'dog': [2], 'bear': 1, 'cat': 1}
>>>
>>> data.get('cat', 1)
1
>>> data
{}
>>> data.setdefault('cat', 1)
1
>>> data
{'cat': 1}
>>> data.setdefault('dog', []).append(2)
>>> data
{'dog': [2], 'cat': 1}
>>> data['bear'] = 1 + data.get('bear', 0)
>>> data
{'dog': [2], 'bear': 1, 'cat': 1}
>>>
- code fragment Six from
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