Created
February 24, 2014 08:27
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| >>> from collections import defaultdict | |
| >>> d = defaultdict(lambda: []) | |
| >>> d | |
| defaultdict(<function <lambda> at 0x1004999b0>, {}) | |
| >>> d['a'].append(1) | |
| >>> d | |
| defaultdict(<function <lambda> at 0x1004999b0>, {'a': [1]}) | |
| >>> d['b'] | |
| [] | |
| >>> d | |
| defaultdict(<function <lambda> at 0x1004999b0>, {'a': [1], 'b': []}) |
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