{"id":75431,"date":"2020-01-23T09:55:12","date_gmt":"2020-01-23T04:25:12","guid":{"rendered":"https:\/\/techvidvan.com\/tutorials\/?p=75431"},"modified":"2020-01-23T09:55:12","modified_gmt":"2020-01-23T04:25:12","slug":"python-zip-function","status":"publish","type":"post","link":"https:\/\/techvidvan.com\/tutorials\/python-zip-function\/","title":{"rendered":"Learn Python Zip Function with Syntax and Examples"},"content":{"rendered":"

In this article, we will focus on the details of the Python zip() function<\/strong> and see it\u2019s applications<\/strong>.<\/p>\n

We will cover the syntax<\/strong> of the function, how to zip() items<\/strong> from multiple iterables<\/strong> into one iterable<\/strong> and in the end we will also learn to unzip<\/strong> the zip<\/strong>.<\/p>\n

Python Zip() Function<\/h3>\n

The zip()<\/strong> is a built-in function<\/strong> which means that it is available<\/strong> to use anywhere<\/strong> in the code<\/strong>. It is used to map similar index<\/strong> items<\/strong> into a single entity<\/strong>. It can take zero<\/strong> or more arguments<\/strong> and it returns<\/strong> us an iterator<\/strong> to the tuple<\/strong>.<\/p>\n

Syntax<\/strong>:<\/p>\n

zip(*iterables)<\/pre>\n
Python Zip() Parameters<\/h3>\n
Python zip function<\/strong> takes built-in<\/strong> or user-defined iterables<\/strong> like lists<\/strong>, strings<\/strong>, dictionary<\/strong>, etc.<\/p>\n
Let\u2019s see this with an example.<\/p>\n
Code:<\/strong><\/p>\n
print( zip() )\nprint( zip([1,2,3], [1,2,4] ))<\/pre>\n
Output:<\/strong><\/p>\n
<zip object at 0x000002C61C827188>
\n<zip object at 0x000002C61C827188><\/div>\n
We can see that the function returns<\/strong> us an iterator<\/strong> to a tuple object<\/strong>. So we can use a for loop<\/strong> to iterate<\/strong> over all the items<\/strong> which have been zipped<\/strong>.<\/p>\n
Python Zip() Function Examples\"python<\/a><\/h3>\n
1. No Arguments<\/h4>\n
When no arguments<\/strong> are passed<\/strong> to the Python zip() function<\/strong> then the zip() returns<\/strong> an iterator<\/strong> to an empty tuple<\/strong>.<\/p>\n
Code:<\/strong><\/p>\n
print(list(zip()))<\/pre>\n
Output:<\/strong><\/p>\n
[]<\/div>\n
As you can see we got an empty list<\/strong> when we converted<\/strong> the iterator<\/strong> into a list<\/strong>.<\/p>\n
2. Single Argument<\/h4>\n
When a single iterable argument<\/strong> is passed<\/strong> to the zip() function<\/strong>, the result is zipped<\/strong> in an iterator<\/strong>. We will use a for loop<\/strong> to see all the items<\/strong>.<\/p>\n
Code:<\/strong><\/p>\n
for i in zip([1,2,3,4,5]):\n  print(i)<\/pre>\n
Output:<\/strong><\/p>\n
(1,)
\n(2,)
\n(3,)
\n(4,)
\n(5,)<\/div>\n
Each item of the iterable<\/strong> argument<\/strong> is converted<\/strong> into a tuple<\/strong>.<\/p>\n
3. Multiple Arguments of Same Length<\/h4>\n
The main purpose of Python zip()<\/strong> function is seen when we pass multiple arguments<\/strong> of the same length<\/strong>. As a result, we will get an iterator<\/strong> to the items<\/strong> of the same index mapped<\/strong> in a tuple<\/strong>.<\/p>\n
You will clearly understand this by looking at the example.<\/p>\n
Code:<\/strong><\/p>\n
student = [\u2018Shrangi\u2019, \u2018Akshay\u2019, \u2018Aman\u2019 , \u2018Joy\u2019]\nbook_id = [1969, 2453, 2189, 1865 ]\nprice = [1100, 780, 800, 950]\n\nfor record in zip(student, book_id, price):\n  print(record)<\/pre>\n
Output:<\/strong><\/p>\n
(\u2018Shrangi\u2019, 1969, 1100)
\n(\u2018Akshay\u2019, 2453, 780)
\n(\u2018Aman\u2019, 2189, 800)
\n(\u2018Joy\u2019, 1865, 950)<\/div>\n
4. Multiple Arguments of Different Length<\/h4>\n
We saw multiple arguments<\/strong> of the same length<\/strong> but what will happen to the index<\/strong> when different length arguments<\/strong> are passed<\/strong>.<\/p>\n
Let\u2019s see a quick example.<\/p>\n
Code:<\/strong><\/p>\n
for i in zip([1,2,3,4],[1,2,3],[1,2,3,4,5]):\n  print(i)<\/pre>\n
Output:<\/strong><\/p>\n
(1, 1, 1)
\n(2, 2, 2)
\n(3, 3, 3)<\/div>\n
Here we see that the zip() function<\/strong> will only map items<\/strong> from left to right.<\/strong><\/p>\n
If one of the iterable<\/strong> in arguments<\/strong> is exhausted <\/strong>then it doesn\u2019t yield<\/strong> further.<\/p>\n
Unzipping Values in Python<\/h3>\n
Till now we discussed zipping<\/strong> the values together<\/strong>. Now, let\u2019s see how we can unzip<\/strong> them.<\/p>\n
For unzipping values<\/strong> we use the * operator<\/strong> it is similar to the tuples unpacking<\/strong>.<\/p>\n
Code:<\/strong><\/p>\n
name = [\u201cAmanda\u201d, \u201cJoey\u201d, \u201cSheldon\u201d, \u201cRebecca\u201d]\nid = [1,2,3,4]\n\n#zipping values\nrecord = list( zip(name, id) )\nprint(record)\n\n#unzipping values\nnames, ids = zip(*record)\nprint(names)\nprint(ids)<\/pre>\n
Output:<\/strong><\/p>\n
[(‘Amanda’, 1), (‘Joey’, 2), (‘Sheldon’, 3), (‘Rebecca’, 4)]
\n(‘Amanda’, ‘Joey’, ‘Sheldon’, ‘Rebecca’)
\n(1, 2, 3, 4)<\/div>\n
Summary<\/h3>\n
In this Python zip function tutorial, we discussed the inbuilt zip()<\/strong> function of Python. We learnt how we can map similar<\/strong> indexes<\/strong> items of different iterables<\/strong> into a single entity<\/strong>.<\/p>\n
We first saw the syntax of the function<\/strong> and then saw the behaviour<\/strong> of the function with a different number of arguments<\/strong>. At last, we learned how to unzip<\/strong> the zipped values<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"
In this article, we will focus on the details of the Python zip() function and see it\u2019s applications. We will cover the syntax of the function, how to zip() items from multiple iterables into...<\/p>\n","protected":false},"author":1,"featured_media":75585,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1053],"tags":[1368,1369,1370,1371,1372,1373,1374,1375],"class_list":["post-75431","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python-unzip","tag-python-zip","tag-python-zip-function","tag-python-zip-function-example","tag-python-zip-parameters","tag-unzipping-values-in-python","tag-zip-function-in-python","tag-zip-function-in-python-example"],"yoast_head":"\nLearn Python Zip Function with Syntax and Examples - TechVidvan<\/title>\n<meta name=\"description\" content=\"Python zip() function is a built-in function which means, that it is available to use anywhere in the code. 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