The sequences are indexed by a range of ordinal numbers. Unlike the string, list, and tuple, a dictionary is not a sequence. In other languages, similar data structures are often called associative arrays or hash tables. Its values can contain references to any type of object. What Is a Dictionary?Ī dictionary is a mutable unordered set of key:value pairs.
CONCATENATING DICTIONARIES PYTHON HOW TO
Subsequent lessons will show you how to use the characteristics of dictionaries beyond the basics. This lesson will introduce you to the characteristics of the Python dictionary, and will show you how to use the basic characteristics. Dictionaries fall in the same general family as these three types of objects (containers or collections), but with significant differences.
In previous lessons, you learned about strings, lists, and tuples. This is the beginning of a miniseries of lessons designed to teach you about dictionaries.
(You will find a consolidated index to all of my Python, Java, and XML tutorials, including Lesson 1 mentioned above, on my website.) Introduction Provides an overall description of this online programming course. Learn to Program using Python: Lesson 1, Getting Started That will make it easier for you to scroll back and forth among the different listings while you are reading about them.īeginners start at the beginning, and experienced programmers jump in further along. You may find it useful to open another copy of this lesson in a separate browser window. This will form a link between Python and Java. After we cover regular Python, the lessons will cover JPython. This document is part of a series of online tutorial lessons designed to teach you how to program using the Python scripting language.
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