One quirk of working with sets is that, if you ever need to define an empty set, you must use the set() function. If you just write empty curly braces, like {}, Python will automatically create a dictionary.
set() # Set
{} # Dictionary
myset = {"apple", "banana", "cherry"}
Sets are used to store multiple items in a single variable.
Set is one of 4 built-in data types in Python used to store collections of data, the other 3 are List, Tuple, and Dictionary, all with different qualities and usage.
A set is a collection which is unordered, unchangeable*, and unindexed.
*Note: Set items are unchangeable, but you can remove items and add new items.
Sets are written with curly brackets.
# Create a Set:
thisset = {"apple", "banana", "cherry"}
print(thisset)
Note: Sets are unordered, so you cannot be sure in which order the items will appear.
Set items are unordered, unchangeable, and do not allow duplicate values.
Unordered means that the items in a set do not have a defined order.
Set items can appear in a different order every time you use them, and cannot be referred to by index or key.