![]() ![]() You can iterate over the keys, values, or both keys and values in a dictionary of lists using a for a loop.For example, you can use the append() method to add an element to the end of a list or the insert() method to insert an element at a specific position. You can add, modify, and remove elements from the lists in a dictionary of lists like you would with a regular list.You can use any data type as the values in a dictionary, including lists, dictionaries, and other data structures.Mutable data types (e.g., lists and dictionaries) cannot be used as keys. You can use any data type as a key in a dictionary as long as the data type is immutable (e.g., strings, integers, tuples).There are a few other things you might want to know about dictionaries of lists: They allow you to quickly and easily access the data for a particular group or category by using the key as an identifier. You can access the list of names for a particular year by specifying the year as the key in square brackets (e.g., names_by_year).ĭictionaries of lists are useful for storing and organising data into groups or categories. Each key is associated with a list of names. In this example, the dictionary names_by_year has three keys: 1900, 1910, and 1920. Here is an example of how you might create a dictionary of lists in Python: You could then access the list of names for a particular year by specifying the year as the key. The keys in the dictionary would be the years, and the values would be the lists of names. The key serves as an identifier for the list, allowing you to access the list by specifying the key.įor example, you might have a dictionary of lists that stores a list of names for each year. A dictionary of lists is a data structure that consists of a collection of lists, where each list is associated with a key. ![]()
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