What is a dictionary?1:23 with Ashley Boucher
Learn the basics of Python dictionaries.
[MUSIC] 0:00 Welcome to Introducing Dictionaries, 0:01 I'm Ashley Boucher and I'll be your teacher for this course. 0:06 Before moving forward, take a second to check the teacher's notes and 0:14 make sure you've completed all of the prerequisites for this course. 0:16 Remember, any questions you have can be asked in the Treehouse community. 0:19 The community is also a great place to help other students and 0:23 answer their questions as well. 0:25 Ready to get started? 0:27 In this course you're going to learn about a new type of Python data structure, 0:29 the dictionary. 0:32 A dictionary is a set of key value pairs. 0:33 Think of a Python list, an ordered sequence of comma separated values, 0:36 indexed by numbers. 0:41 A dictionary does have similarities to a list. 0:42 For instance, dictionaries also contain comma separated values, 0:45 but that's really where the similarities end. 0:49 In a dictionary, each of its values has a label called the key. 0:51 And dictionaries are not sequences, they aren't ordered. 0:55 They're indexed by their keys, not numbers. 0:58 You'll see variations of dictionaries in just about every programming language. 1:02 You might know them as associative arrays or associative memories. 1:05 They're the earliest stepping stone in thinking about object 1:09 oriented programming, 1:12 a design pattern that revolves around modeling reusable objects in your code. 1:13 It's an exciting topic, 1:18 join me in the next video to start learning more about key value pairs. 1:20
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