Learn Programming in Python with Cody Jackson

Sets

Sets are unordered collections of hashable objects; in other words, each object is unique. Sets are commonly used to see if a collection of objects contains a particular item, remove duplicates from a sequence, and compute a variety of mathematical operations.

Sets look like dictionaries, in that curly braces {} are used to create a set. However, unlike dictionaries, sets only have values; there are no key names within a set.

The following example shows how to create a set:

knights_set = {"Sir Galahad", "Sir Lancelot", "Sir Robin"} 

Sets are also like dictionaries in that the objects they contain are unordered, and it is likely that calling a set will show a different order of objects compared to what was originally set.

There are actually ...