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alexbowe/int_mapper_one_liner.py

Created August 17, 2013 00:50
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A shorthand way to get a unique integer mapper in Python
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int_mapper_one_liner.py
# here is a tidy way to get a hashable object (such as a word) to map to a unique int in python
from collections import defaultdict
mapper = defaultdict(lambda: len(mapper))
mapper["hello"] # 0
mapper["world"] # 1
mapper["and"] # 2
mapper["hello"] # 0
mapper["alex"] # 3
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