Before learning the use of “@” as a decorator, let’s first understand what is a decorator and what is it used for.<\/p>\n\n\n\n
What is a decorator?<\/h2>\n\n\n\n
A function called a decorator accepts another function as input, modifies it by adding some features, and then returns the updated function. Without changing the original function’s source code, one can do this. <\/p>\n\n\n\n
One can easily extend the functionality of the current functions by decorating them. By including that code inside the wrapper function, we may do this. Therefore, one can simply add or change any code they want inside the wrapper function without changing the original method in any way.<\/p>\n\n\n\n
To learn more about decorators click here.<\/a><\/p>\n\n\n\n Output<\/strong><\/p>\n\n\n\n Now that we have an idea of what a decorator is, let’s understand the use of the ‘@’ symbol in decorating. <\/p>\n\n\n\n Take a look at the above example, we have assigned a variable x which is equal to the first function (func1) with the second function (func2) passed as its parameter. <\/p>\n\n\n\n Then we call the variable to run the functions in the required way. Instead of working this way, the easy way is to add a line of code with the”@” symbol followed by name of the first function to it before starting with the second function. This works the same way as the above function. The benefit of using the “@” symbol method is that it makes code more readable and easier to understand.<\/p>\n\n\n\n The example below will give a clear idea about the same.<\/p>\n\n\n Output<\/strong><\/p>\n\n\n\n There are several decorators users will encounter, but the most prevalent ones include<\/p>\n\n\n\n In Python 3.5, the @ operator can be overloaded. It is termed __matmul<\/strong>__ since it is intended to perform matrix multiplication. To learn more about the same click here. <\/a><\/p>\n\n\n\n Below is the simple implementation of this method in Python programming language.<\/p>\n\n\n Output<\/strong><\/p>\n\n\n\n In this article, we tried to comprehend the different uses of the “@” symbol. along with this, we also understood decorator, its uses, and benefits in the python programming language. To learn from more such easy to understand and detailed articles on various topics related to the Python Programming Language, check our courses section<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" Python is an excellent interpreted programming language and has its own syntax. The set of guidelines that specify how a Programming language will be written and executed is known as the syntax (by both the runtime system of the computer and by human developers). Perl, C, and Java are all closely related to Python in […]<\/p>\n","protected":false},"author":41,"featured_media":43002,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-41886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oops"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/posts\/41886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/comments?post=41886"}],"version-history":[{"count":0,"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/posts\/41886\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/media\/43002"}],"wp:attachment":[{"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/media?parent=41886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/categories?post=41886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.askpython.com\/wp-json\/wp\/v2\/tags?post=41886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Example of decorator without using “@”<\/h2>\n\n\n
\n#defining function with the wrapper function\ndef func1(func):\n def wrapper():\n print("Begin")\n func()\n print("End")\n\n return wrapper\n\n#defining the function that is passed as parameter\ndef func2():\n print("AskPython")\n\n#calling the function\nx = func1(func2)\nx()\n<\/pre><\/div>\n\n\n![\"Decorator](\"https:\/\/www.askpython.com\/wp-content\/uploads\/2023\/02\/Decorator-example-without-using-@-symbol.png\")
Use of ‘@’ for decorating in Python<\/h2>\n\n\n\n
\n#defining function with the wrapper function\ndef func1(func):\n def wrapper():\n print("Begin")\n func()\n print("End")\n\n return wrapper\n\n#defining the function that is passed as parameter\n@func1\ndef func2():\n print("AskPython")\n\n#calling the function\nfunc2()\n<\/pre><\/div>\n\n\n![\"Decorator](\"https:\/\/www.askpython.com\/wp-content\/uploads\/2023\/02\/Decorator-example-using-@-symbol-1024x366.png\")
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Use of ‘@’ for matrix multiplication <\/h2>\n\n\n\n
\nclass example(list):\n def __matmul__(self, y):\n x = self\n return ([[sum(x[i][k] * y[k][j] for k in range(len(y)))\n for j in range(len(y[0])) ] for i in range(len(x))])\n\nx = example([[1, 5],[2, 4]])\ny = example([[3, 3],[4, 2]])\n\nprint("OUTPUT: ")\nprint(x @ y)\n<\/pre><\/div>\n\n\n![\"Matrix](\"https:\/\/www.askpython.com\/wp-content\/uploads\/2023\/02\/Matrix-Multiplication-using-@.png\")
Summary<\/h2>\n\n\n\n