Iterate from one key to another in an OrderedDict

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I have an OrderedDict in and I have two keys. I know that one key is stored before the other key and I would like to iterate all items between the first key to the second key.

I don't want to iterate over the whole map, because it's huge. Only the items between the two keys I have. How can I do this?

ordereddictionary python
1 Answers

You could use a pandas Series in place of the dict. pandas is a huge dependency though.

>>> import pandas as pd
>>> d = {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5}
>>> s = pd.Series(d)
>>> s['b':'d']
b    2
c    3
d    4
dtype: int64
>>> s['b':'d'].to_dict()
{'b': 2, 'c': 3, 'd': 4}

(Demo is with a regular dict because they are ordered with respect to key insertion since Python 3.7.)

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