Python OrderedDict sort by tuple order

In Python, the collections module provides the OrderedDict class, which is a dictionary subclass that maintains the order of the keys based on their insertion order. While OrderedDict itself preserves the order of insertion, there might be scenarios where you want to sort the items based on a specific order, such as a tuple order. In this tutorial, we will explore how to sort an OrderedDict by the order of tuples.
Before we begin, make sure you have a basic understanding of Python and the OrderedDict class.
Suppose you have an OrderedDict with keys as strings and values as integers, and you want to sort it based on a specific tuple order. Here's a step-by-step guide:
Let's create an OrderedDict with some sample data:
Define the tuple order based on which you want to sort the OrderedDict. For example, if you want to sort by the first element of the tuple (string), you can create a list of keys in the desired order:
Now, you can sort the OrderedDict based on the tuple order using a custom key function:
Let's break down this line:
Finally, print the sorted OrderedDict:
Here's the complete example:
This will output:
The OrderedDict has been sorted based on the specified tuple order.
In this tutorial, you learned how to sort a Python OrderedDict based on a specific tuple order. This can be useful when you need to customize the order of items in your dictionary based on a predefined sequence.
ChatGPT