How do you retrieve a list of values from a dictionary based on a given list of keys?

Retrieving List of Values Based on Key List in Dictionary

In various programming scenarios, the need arises to extract a list of values from a dictionary based on a given list of keys. To facilitate this task, let's consider the sample dictionary and key list:

<code class="python">mydict = {'one': 1, 'two': 2, 'three': 3}
mykeys = ['three', 'one']</code>

List Comprehension Approach

A concise way to accomplish this task is through list comprehension:

<code class="python">values_from_keys = [mydict[key] for key in mykeys]</code>

This approach iterates over each element in the mykeys list and uses it to access the corresponding value from the mydict dictionary. The retrieved values are collected in a new list values_from_keys.

Result:

<code class="python">>>> values_from_keys
[3, 1]</code>

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