{"id":1128,"date":"2024-02-24T10:49:05","date_gmt":"2024-02-24T10:49:05","guid":{"rendered":"https:\/\/learnpython.elegantwallp.com\/?p=1128"},"modified":"2024-02-24T10:49:06","modified_gmt":"2024-02-24T10:49:06","slug":"python-sets","status":"publish","type":"post","link":"https:\/\/learnpython.elegantwallp.com\/2024\/02\/24\/python-sets\/","title":{"rendered":"Python\u00a0Sets"},"content":{"rendered":"\n
myset = {\"apple\", \"banana\", \"cherry\"}<\/code><\/pre>\n\n\n\n
\n\n\n\n
Set<\/h2>\n\n\n\n
Sets are used to store multiple items in a single variable.<\/p>\n\n\n\n
Set is one of 4 built-in data types in Python used to store collections of data, the other 3 are\u00a0List,\u00a0Tuple, and\u00a0Dictionary, all with different qualities and usage.<\/p>\n\n\n\n
A set is a collection which is unordered<\/em>, unchangeable*<\/em>, and unindexed<\/em>.<\/p>\n\n\n\n
* Note:<\/strong> Set items<\/em> are unchangeable, but you can remove items and add new items.<\/p>\n\n\n\n
Sets are written with curly brackets.<\/p>\n\n\n\n
ExampleGet your own Python Server<\/h3>\n\n\n\n
Create a Set:<\/p>\n\n\n\n
thisset = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\"}
print(thisset)<\/code><\/pre>\n\n\n\n
Note:<\/strong> Sets are unordered, so you cannot be sure in which order the items will appear.<\/p>\n\n\n\n
\n\n\n\n
Set Items<\/h2>\n\n\n\n
Set items are unordered, unchangeable, and do not allow duplicate values.<\/p>\n\n\n\n
\n\n\n\n
Unordered<\/h2>\n\n\n\n
Unordered means that the items in a set do not have a defined order.<\/p>\n\n\n\n
Set items can appear in a different order every time you use them, and cannot be referred to by index or key.<\/p>\n\n\n\n
\n\n\n\n
Unchangeable<\/h2>\n\n\n\n
Set items are unchangeable, meaning that we cannot change the items after the set has been created.<\/p>\n\n\n\n
Once a set is created, you cannot change its items, but you can remove items and add new items.<\/p>\n\n\n\n
\n\n\n\n
Duplicates Not Allowed<\/h2>\n\n\n\n
Sets cannot have two items with the same value.<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
Duplicate values will be ignored:<\/p>\n\n\n\n
thisset = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\",\u00a0\"apple\"}

print(thisset)<\/code><\/pre>\n\n\n\n
Note:<\/strong> The values True<\/code> and 1<\/code> are considered the same value in sets, and are treated as duplicates:<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
True<\/code> and 1<\/code> is considered the same value:<\/p>\n\n\n\n
thisset = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\",\u00a0True,\u00a01,\u00a02}

print(thisset)<\/code><\/pre>\n\n\n\n
Note:<\/strong> The values False<\/code> and 0<\/code> are considered the same value in sets, and are treated as duplicates:<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
False<\/code> and 0<\/code> is considered the same value:<\/p>\n\n\n\n
thisset = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\",\u00a0False,\u00a0True,\u00a00}

print(thisset)<\/code><\/pre>\n\n\n\n
\n\n\n\n
\n\n\n\n
Get the Length of a Set<\/h2>\n\n\n\n
To determine how many items a set has, use the len()<\/code> function.<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
Get the number of items in a set:<\/p>\n\n\n\n
thisset = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\"}

print(len(thisset))<\/code><\/pre>\n\n\n\n
\n\n\n\n
Set Items – Data Types<\/h2>\n\n\n\n
Set items can be of any data type:<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
String, int and boolean data types:<\/p>\n\n\n\n
set1 = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\"}
set2 = {1,\u00a05,\u00a07,\u00a09,\u00a03}
set3 = {True,\u00a0False,\u00a0False}<\/code><\/pre>\n\n\n\n
A set can contain different data types:<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
A set with strings, integers and boolean values:<\/p>\n\n\n\n
set1 = {\"abc\",\u00a034,\u00a0True,\u00a040,\u00a0\"male\"}\n\n<\/code><\/pre>\n\n\n\n
\n\n\n\n
type()<\/h2>\n\n\n\n
From Python’s perspective, sets are defined as objects with the data type ‘set’:<\/p>\n\n\n\n
<class 'set'><\/code><\/pre>\n\n\n\n
Example<\/h3>\n\n\n\n
What is the data type of a set?<\/p>\n\n\n\n
myset = {\"apple\",\u00a0\"banana\",\u00a0\"cherry\"}
print(type(myset))<\/code><\/pre>\n\n\n\n
\n\n\n\n
The set() Constructor<\/h2>\n\n\n\n
It is also possible to use the set() constructor to make a set.<\/p>\n\n\n\n
Example<\/h3>\n\n\n\n
Using the set() constructor to make a set:<\/p>\n\n\n\n
thisset = set((\"apple\",\u00a0\"banana\",\u00a0\"cherry\"))\u00a0# note the double round-brackets
print(thisset)<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
Set 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\u00a0List,\u00a0Tuple, and\u00a0Dictionary, 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 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107],"tags":[],"class_list":["post-1128","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/posts\/1128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/comments?post=1128"}],"version-history":[{"count":1,"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/posts\/1128\/revisions"}],"predecessor-version":[{"id":1129,"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/posts\/1128\/revisions\/1129"}],"wp:attachment":[{"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/media?parent=1128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/categories?post=1128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learnpython.elegantwallp.com\/wp-json\/wp\/v2\/tags?post=1128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}