Sometimes, we want to implement an ordered, default dict with Python.

In this article, we’ll look at how to implement an ordered, default dict with Python.

How to implement an ordered, default dict with Python?

To implement an ordered, default dict with Python, we can use the OrderedDict.fromkeys method.

For instance, we write

from collections import OrderedDict

keys = ['a', 'b', 'c']
od = OrderedDict.fromkeys(keys)

to call OrderedDict.fromkeys with the keys list to returned an ordered dict with the keys being the values in the keys list.

And the values are all set to None.

Conclusion

To implement an ordered, default dict with Python, we can use the OrderedDict.fromkeys method.