以范围为键的字典 [英] Dictionary with range as key

问题描述

在Python中，如何将一系列值映射到一个具体值? 基本上，我想要一本字典，可以用数字填充范围和索引:

In Python, how can I map from a range of values to one concrete value? Basically, I want a dictionary, which I can fill with ranges and index with numbers:

rd = rangedict()
rd[(0, 10)] = 5
print rd[4] # prints 5
print rd[6] # prints 5
rd[(5, 15)] = 20
print rd[4] # prints 5
print rd[6] # prints 20

推荐答案

感谢注释，我可以使用intervaltree包找到解决方案.

Thanks to the comments I could find a solution using the intervaltree package.

from intervaltree import IntervalTree

tree = IntervalTree()
tree.addi(0, 10, 5)
print tree[4]
print tree[6]

# need to chop before, as the library stores both intervals otherwise
tree.chop(5, 15)
tree.addi(5, 15, 20)
print tree[4]
print tree[6]

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