{"id":807,"date":"2022-06-28T21:48:00","date_gmt":"2022-06-28T16:18:00","guid":{"rendered":"https:\/\/geekpython.in\/?p=807"},"modified":"2023-08-15T16:50:42","modified_gmt":"2023-08-15T11:20:42","slug":"zip-function-in-python-usage-and-examples-with-code","status":"publish","type":"post","link":"https:\/\/geekpython.in\/zip-function-in-python-usage-and-examples-with-code","title":{"rendered":"zip() Function In Python – Usage & Examples With Code"},"content":{"rendered":"\n

Have you ever heard the word “parallel iteration” or tried to “loop over multiple iterables in parallel” when you were coding in Python?<\/em><\/strong><\/p>\n\n\n\n

This tutorial will show a Python zip()<\/code> function that helps us perform a parallel iteration over multiple iterables<\/strong>.<\/p>\n\n\n\n

<\/a>Definition<\/h1>\n\n\n\n

The zip()<\/code> function takes iterables and iterates over them parallelly, which results in producing tuples of each item from the iterables.<\/p>\n\n\n\n

items = [\"Computer\", \"Keyboard\", \"CPU\", \"Mouse\"]\nunits = [3, 2, 4, 6]\n\nmapping = zip(items, units)\n\nprint(tuple(mapping))<\/pre><\/div>\n\n\n\n
Output<\/strong><\/p>\n\n\n\n
(('Computer', 3), ('Keyboard', 2), ('CPU', 4), ('Mouse', 6))<\/pre><\/div>\n\n\n\n
In other words, it returns the iterator of tuples<\/strong> where the first item in each passed iterator is paired together<\/strong> and then the second item in each passed iterator is paired together<\/strong> and it goes so on until the shortest iterator is exhausted<\/strong>.<\/p>\n\n\n\n
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Another way to think of zip()<\/code> is that it turns rows into columns and columns into rows. This is similar to transposing a matrix.Source<\/a><\/p>\n<\/blockquote>\n\n\n\n
<\/a>Syntax<\/h1>\n\n\n\n
The syntax of Python zip()<\/code> function is:<\/p>\n\n\n\n
zip(*iterables)<\/code> or zip(iterator1, iterator2, ...)<\/code><\/p>\n\n\n\n
In Python 3.10, the<\/strong> strict<\/code> argument was added<\/strong><\/p>\n\n\n\n
zip(*iterables, strict=False)<\/code><\/p>\n\n\n\n
We’ll see the use of strict<\/code> ahead in this tutorial.<\/p>\n\n\n\n
zip()<\/code> parameters:<\/strong><\/p>\n\n\n\n
iterables<\/code>: they can be lists, tuples, dictionaries, or objects that can be iterated.<\/p>\n\n\n\n
<\/a>Example<\/h1>\n\n\n\n
languages = [\"Python\", \"JavaScript\", \"C\", \"C++\"]\nfounded = [1991, 1995, 1972, 1985]\n\nmapping = zip(languages, founded)\n\nprint(list(mapping))\n\nprint(type(list(mapping)))<\/pre><\/div>\n\n\n\n
Output<\/strong><\/p>\n\n\n\n
[('Python', 1991), ('JavaScript', 1995), ('C', 1972), ('C++', 1985)]\n<class 'list'><\/pre><\/div>\n\n\n\n
<\/a>Working of zip() function<\/h1>\n\n\n\n
How zip()<\/code> function creates an iterator of the tuple?<\/p>\n\n\n\n
We can actually say that zipping means aggregating two separate things into one.<\/p>\n\n\n\n
Just like it, the Python<\/strong> zip()<\/code> function works by taking two inputs say<\/strong> A1<\/code> and<\/strong> A2<\/code>, and then aggregating the item of the same index number of<\/strong> A1<\/code> and<\/strong> A2<\/code>.<\/p>\n\n\n\n
We will better understand through the illustration below<\/p>\n\n\n\n
\"zip<\/figure>\n\n\n\n