{"id":6001,"date":"2020-05-28T03:41:47","date_gmt":"2020-05-28T03:41:47","guid":{"rendered":"https:\/\/www.askpython.com\/?p=6001"},"modified":"2023-02-16T19:57:05","modified_gmt":"2023-02-16T19:57:05","slug":"python-list-of-tuples","status":"publish","type":"post","link":"https:\/\/www.askpython.com\/python\/list\/python-list-of-tuples","title":{"rendered":"5 Examples of Python List of Tuples"},"content":{"rendered":"\n

Hey, readers! In this article, we will be focusing on Python List of Tuples<\/strong>.<\/p>\n\n\n\n

\n\n\n\n

What is Python List and Tuple?<\/h2>\n\n\n\n

Python List<\/a> is a data structure that maintains an ordered collection of mutable data elements.<\/p>\n\n\n

\nlist-name = [ item1, item2, ....., itemN]\n<\/pre><\/div>\n\n\n
The elements in the list are enclosed within square brackets []<\/strong>.<\/p>\n\n\n\n
Python Tuple<\/a> is an immutable data structure whose elements are enclosed within parenthesis ()<\/strong>.<\/p>\n\n\n
\ntuple-name = (item1, item2, ...., itemN)\n<\/pre><\/div>\n\n\n
\n\n\n\n
Python List of Tuples<\/h3>\n\n\n\n
We can create a list of tuples<\/strong> i.e. the elements of the tuple can be enclosed in a list and thus will follow the characteristics in a similar manner as of a Python list. Since, Python Tuples utilize less amount of space, creating a list of tuples would be more useful in every aspect.<\/p>\n\n\n\n
Example:<\/strong><\/p>\n\n\n
\nLT_data = [(1,2,3),('S','P','Q')]\nprint("List of Tuples:\\n",LT_data)\n<\/pre><\/div>\n\n\n
Output:<\/strong><\/p>\n\n\n
\nList of Tuples:\n [(1, 2, 3), ('S', 'P', 'Q')]\n<\/pre><\/div>\n\n\n
\n\n\n\n
Python list of tuples using zip() function<\/h3>\n\n\n\n
Python zip() function<\/a> can be used to map the lists altogether to create a list of tuples using the below command:<\/p>\n\n\n
\nlist(zip(list))\n<\/pre><\/div>\n\n\n
The zip() function<\/code> returns an iterable of tuples based upon the values passed to it. And, further, the list() function<\/code> would create a list of those tuples as an output from the zip() function.<\/p>\n\n\n\n
Example:<\/strong><\/p>\n\n\n
\nlst1 = [10,20,30]\nlst2 = [50,"Python","JournalDev"]\nlst_tuple = list(zip(lst1,lst2))\nprint(lst_tuple)\n<\/pre><\/div>\n\n\n
Output:<\/strong><\/p>\n\n\n
\n[(10, 50), (20, 'Python'), (30, 'JournalDev')]\n<\/pre><\/div>\n\n\n
\n\n\n\n
Customized grouping of elements while forming a list of tuples<\/h3>\n\n\n\n
While forming a list of tuples, it is possible for us to provide customized grouping of elements depending on the number of elements in the list\/tuple.<\/p>\n\n\n
\n[element for element in zip(*[iter(list)]*number)]\n<\/pre><\/div>\n\n\n
List comprehension along with zip() function<\/code> is used to convert the tuples to list and create a list of tuples. Python iter() function<\/code> is used to iterate an element of an object at a time. The ‘number<\/strong>‘ would specify the number of elements to be clubbed into a single tuple to form a list.<\/p>\n\n\n\n
Example 1:<\/strong><\/p>\n\n\n
\nlst = [50,"Python","JournalDev",100]\nlst_tuple = [x for x in zip(*[iter(lst)])]\nprint(lst_tuple)\n<\/pre><\/div>\n\n\n
In the above example, we have formed a list of tuples with a single element inside a tuple using the iter() method<\/a>.<\/p>\n\n\n\n
Output:<\/strong><\/p>\n\n\n
\n[(50,), ('Python',), ('JournalDev',), (100,)]\n<\/pre><\/div>\n\n\n
Example 2:<\/strong><\/p>\n\n\n
\nlst = [50,"Python","JournalDev",100]\nlst_tuple = [x for x in zip(*[iter(lst)]*2)]\nprint(lst_tuple)\n<\/pre><\/div>\n\n\n
In this example, two elements are contained inside a tuple to form a list of tuple.<\/p>\n\n\n\n
Output:<\/strong><\/p>\n\n\n
\n[(50, 'Python'), ('JournalDev', 100)]\n<\/pre><\/div>\n\n\n
\n\n\n\n
Python list of tuples using map() function<\/h3>\n\n\n\n
Python map function<\/a> can be used to create a list of tuples. The map() function<\/code> maps and applies a function to an iterable passed to the function.<\/p>\n\n\n
\nmap(function, iterable)\n<\/pre><\/div>\n\n\n
Example:<\/strong><\/p>\n\n\n
\nlst = [[50],["Python"],["JournalDev"],[100]]\nlst_tuple =list(map(tuple, lst))\nprint(lst_tuple)\n<\/pre><\/div>\n\n\n
In this example, we have mapped the input list to the tuple function using map() function. After this, the list() function is used to create a list of the mapped tuple values.<\/p>\n\n\n\n
Output:<\/strong><\/p>\n\n\n
\n[(50,), ('Python',), ('JournalDev',), (100,)]\n<\/pre><\/div>\n\n\n
\n\n\n\n
Python list of tuples using list comprehension  and tuple() method<\/h3>\n\n\n\n
Python tuple() method along with List Comprehension can be used to form a list of tuples.<\/p>\n\n\n\n
The tuple() function<\/code> helps to create tuples from the set of elements passed to it. <\/p>\n\n\n\n
Example:<\/strong><\/p>\n\n\n
\nlst = [[50],["Python"],["JournalDev"],[100]]\nlst_tuple =[tuple(ele) for ele in lst]\nprint(lst_tuple)\n<\/pre><\/div>\n\n\n
Output:<\/strong><\/p>\n\n\n
\n[(50,), ('Python',), ('JournalDev',), (100,)]\n<\/pre><\/div>\n\n\n
\n\n\n\n
Conclusion<\/h2>\n\n\n\n
By this, we have come to the end of the article. I hope you all have enjoyed learning this interesting concept of Python list of tuples.<\/p>\n\n\n\n
Feel free to comment below, in case you come across any doubt.<\/p>\n\n\n\n
\n\n\n\n
References<\/h2>\n\n\n\n