From the course: Programming Foundations: Data Structures

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When to use dictionaries

When to use dictionaries - Python Tutorial

From the course: Programming Foundations: Data Structures

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When to use dictionaries

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- [Instructor] Every data structure has its pros and cons depending on your use case. So, when should you use a dictionary? Dictionaries are ideal when you need fast data access. They offer significantly quicker retrieval, insertion, and search times than many other data structures, though this comes at the cost of higher memory usage. In fact, these operations take O of 1 or constant time because their runtime is consistent across any input or any size of the structure. Depending on the data you're storing, dictionaries can also be useful because their key value nature allows you to store mapping relationships more easily. They can also grow and shrink in size dynamically, making them a very flexible data structure. However, if you need to maintain a specific order, a regular dictionary may not be ideal, since dictionaries don't inherently preserve order. You would need to use an ordered dictionary or sort the keys manually. Another limitation to keep in mind is that dictionary keys…

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