{"id":14610,"date":"2025-03-08T22:00:14","date_gmt":"2025-03-08T19:00:14","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/"},"modified":"2025-03-08T22:00:14","modified_gmt":"2025-03-08T19:00:14","slug":"python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/","title":{"rendered":"Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?"},"content":{"rendered":"<p>Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?<\/p>\n<p>Python&#8217;da dekorat\u00f6rler, fonksiyonlar\u0131n davran\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirmek i\u00e7in kullan\u0131lan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r.  Fonksiyonel programlaman\u0131n temel ta\u015flar\u0131ndan biri olan dekorat\u00f6rler, kod tekrar\u0131n\u0131 azalt\u0131r, okunabilirli\u011fi art\u0131r\u0131r ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flar.  Bu makalede, dekorat\u00f6rlerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi ad\u0131m ad\u0131m a\u00e7\u0131klayaca\u011f\u0131z. <a href=\"https:\/\/fatihsoysal.com\">Fatih Soysal<\/a> olarak haz\u0131rlad\u0131\u011f\u0131m bu makalede, konuyu en ince ayr\u0131nt\u0131s\u0131na kadar ele alaca\u011f\u0131m.<\/p>\n<h2>Dekorat\u00f6rler Nedir?<\/h2>\n<p>Basit\u00e7e s\u00f6ylemek gerekirse, bir dekorat\u00f6r, bir fonksiyonu ba\u015fka bir fonksiyonla &#8220;sarmak&#8221; i\u015flemidir.  Bu &#8220;sarma&#8221; i\u015flemi,  orijinal fonksiyonun \u00e7al\u0131\u015ft\u0131r\u0131lmadan \u00f6nce veya sonra ek i\u015flemler yapmam\u0131z\u0131 sa\u011flar. \u00d6rne\u011fin, bir fonksiyonun \u00e7al\u0131\u015fma s\u00fcresini \u00f6l\u00e7mek, giri\u015f verilerini do\u011frulamak veya hata yakalama mekanizmalar\u0131 eklemek gibi i\u015flemler i\u00e7in dekorat\u00f6rler kullan\u0131labilir.  Sonu\u00e7 olarak, dekorat\u00f6rler kodumuzu daha temiz, daha okunakl\u0131 ve daha esnek hale getirir.<\/p>\n<h2>Dekorat\u00f6rlerin \u00c7al\u0131\u015fma Prensibi<\/h2>\n<p>Bir dekorat\u00f6r, asl\u0131nda bir fonksiyon alan ve ba\u015fka bir fonksiyon d\u00f6nd\u00fcren, y\u00fcksek seviye bir fonksiyondur.  Bu d\u00f6nd\u00fcr\u00fclen fonksiyon, orijinal fonksiyonu i\u00e7erir ve onu istedi\u011fimiz \u015fekilde geni\u015fletir.  A\u015fa\u011f\u0131daki \u00f6rnek, bu mekanizmay\u0131 daha net bir \u015fekilde g\u00f6stermektedir:<\/p>\n<pre><code class=\"language-python\">\ndef my_decorator(func):\n    def wrapper():\n        print(\"Fonksiyon \u00e7al\u0131\u015fmadan \u00f6nce\")\n        func()\n        print(\"Fonksiyon \u00e7al\u0131\u015ft\u0131ktan sonra\")\n    return wrapper\n\n@my_decorator\ndef say_hello():\n    print(\"Merhaba!\")\n\nsay_hello()\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>my_decorator<\/code> fonksiyonu bir dekorat\u00f6rd\u00fcr. <code>say_hello<\/code> fonksiyonunu s\u00fcsl\u00fcyor (decorate ediyor) ve onun \u00e7al\u0131\u015ft\u0131r\u0131lmadan \u00f6nce ve sonra ek i\u015flemler yap\u0131yor.  <code>@my_decorator<\/code> sat\u0131r\u0131, <code>say_hello<\/code> fonksiyonunu <code>my_decorator<\/code> fonksiyonuna ge\u00e7irmek i\u00e7in bir k\u0131sayoldur.<\/p>\n<h2>Kendi Dekorat\u00f6rlerinizi Yazmak<\/h2>\n<p>Kendi dekorat\u00f6rlerinizi yazmak olduk\u00e7a basittir.  \u00d6nemli olan, bir fonksiyonu alan ve ba\u015fka bir fonksiyon d\u00f6nd\u00fcren bir fonksiyon yazmakt\u0131r.  \u0130\u015fte birka\u00e7 ileri seviye \u00f6rnek:<\/p>\n<pre><code class=\"language-python\">\nimport time\n\ndef time_it(func):\n    def wrapper(*args, **kwargs):\n        start = time.time()\n        result = func(*args, **kwargs)\n        end = time.time()\n        print(f\"Fonksiyon {func.__name__} {end - start:.4f} saniye s\u00fcrd\u00fc.\")\n        return result\n    return wrapper\n\n@time_it\ndef slow_function(n):\n    time.sleep(n)\n    return n*2\n\nslow_function(2)\n\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>time_it<\/code> dekorat\u00f6r\u00fc, bir fonksiyonun \u00e7al\u0131\u015fma s\u00fcresini \u00f6l\u00e7er ve sonucu ekrana yazd\u0131r\u0131r.  <code>*args<\/code> ve <code>**kwargs<\/code> parametreleri,  dekorat\u00f6r\u00fcn herhangi bir say\u0131da pozisyonel ve keyword arg\u00fcman\u0131n\u0131 kabul etmesini sa\u011flar. Ayr\u0131ca,  arg\u00fcmanlar\u0131n ve keyword arg\u00fcmanlar\u0131n\u0131n dekorat\u00f6r taraf\u0131ndan korunmas\u0131n\u0131 sa\u011flar.<\/p>\n<p>Daha karma\u015f\u0131k dekorat\u00f6rler yazmak i\u00e7in, fonksiyonlar\u0131n arg\u00fcmanlar\u0131n\u0131 ve d\u00f6n\u00fc\u015f de\u011ferlerini incelemek ve de\u011fi\u015ftirmek  gerekebilir.  Bunun i\u00e7in,  <code>functools.wraps<\/code> dekorat\u00f6r\u00fc kullanarak, orijinal fonksiyonun meta verilerini korumak \u00f6nemlidir.  Bu, \u00f6zellikle hata ay\u0131klama ve dok\u00fcmantasyon a\u00e7\u0131s\u0131ndan faydal\u0131d\u0131r.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Python dekorat\u00f6rleri, kod tekrar\u0131n\u0131 azaltmak, okunabilirli\u011fi art\u0131rmak ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flamak i\u00e7in kullan\u0131labilecek g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r.  Bu makalede, dekorat\u00f6rlerin \u00e7al\u0131\u015fma prensibini ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi \u00f6\u011frendiniz.  Daha fazla bilgi i\u00e7in,  <a href=\"https:\/\/docs.python.org\/3\/glossary.html#term-decorator\">Python resmi dok\u00fcmantasyonuna<\/a>  bakabilirsiniz.  Umar\u0131m bu makale size yard\u0131mc\u0131 olmu\u015ftur!  <a href=\"https:\/\/fatihsoysal.com\">Daha fazla Python i\u00e7eri\u011fi i\u00e7in web sitemi ziyaret edebilirsiniz.<\/a><\/p>\n<p>#Etiketler: Python, Dekorat\u00f6rler, Fonksiyonel Programlama, Python Dekorat\u00f6rleri,  Programlama,  Kod Optimizasyonu,  Yaz\u0131l\u0131m Geli\u015ftirme,  Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r? Python&#8217;da dekorat\u00f6rler, fonksiyonlar\u0131n davran\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirmek i\u00e7in kullan\u0131lan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Fonksiyonel&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-14610","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?<\/title>\n<meta name=\"description\" content=\"Python&#039;da dekorat\u00f6rler, fonksiyonlar\u0131n davran\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirmek i\u00e7in kullan\u0131lan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Fonksiyonel programlaman\u0131n temel ta\u015flar\u0131ndan biri olan dekorat\u00f6rler, kod tekrar\u0131n\u0131 azalt\u0131r, okunabilirli\u011fi art\u0131r\u0131r ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flar. Bu makalede, dekorat\u00f6rlerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi ad\u0131m ad\u0131m a\u00e7\u0131klayaca\u011f\u0131z. Fatih Soysal olarak haz\u0131rlad\u0131\u011f\u0131m bu makalede, konuyu en ince ayr\u0131nt\u0131s\u0131na kadar ele alaca\u011f\u0131m.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?\" \/>\n<meta property=\"og:description\" content=\"Python&#039;da dekorat\u00f6rler, fonksiyonlar\u0131n davran\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirmek i\u00e7in kullan\u0131lan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Fonksiyonel programlaman\u0131n temel ta\u015flar\u0131ndan biri olan dekorat\u00f6rler, kod tekrar\u0131n\u0131 azalt\u0131r, okunabilirli\u011fi art\u0131r\u0131r ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flar. Bu makalede, dekorat\u00f6rlerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi ad\u0131m ad\u0131m a\u00e7\u0131klayaca\u011f\u0131z. Fatih Soysal olarak haz\u0131rlad\u0131\u011f\u0131m bu makalede, konuyu en ince ayr\u0131nt\u0131s\u0131na kadar ele alaca\u011f\u0131m.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-08T19:00:14+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?\",\"datePublished\":\"2025-03-08T19:00:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/\"},\"wordCount\":530,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/\",\"name\":\"Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-03-08T19:00:14+00:00\",\"description\":\"Python'da dekorat\u00f6rler, fonksiyonlar\u0131n davran\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirmek i\u00e7in kullan\u0131lan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Fonksiyonel programlaman\u0131n temel ta\u015flar\u0131ndan biri olan dekorat\u00f6rler, kod tekrar\u0131n\u0131 azalt\u0131r, okunabilirli\u011fi art\u0131r\u0131r ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flar. Bu makalede, dekorat\u00f6rlerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi ad\u0131m ad\u0131m a\u00e7\u0131klayaca\u011f\u0131z. 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Fonksiyonel programlaman\u0131n temel ta\u015flar\u0131ndan biri olan dekorat\u00f6rler, kod tekrar\u0131n\u0131 azalt\u0131r, okunabilirli\u011fi art\u0131r\u0131r ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flar. Bu makalede, dekorat\u00f6rlerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi ad\u0131m ad\u0131m a\u00e7\u0131klayaca\u011f\u0131z. Fatih Soysal olarak haz\u0131rlad\u0131\u011f\u0131m bu makalede, konuyu en ince ayr\u0131nt\u0131s\u0131na kadar ele alaca\u011f\u0131m.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/fatihsoysal.com\/blog\/python-dekoratorleri-nasil-calisirlar-ve-nasil-yazilir\/","og_locale":"tr_TR","og_type":"article","og_title":"Python Dekorat\u00f6rleri: Nas\u0131l \u00c7al\u0131\u015f\u0131rlar ve Nas\u0131l Yaz\u0131l\u0131r?","og_description":"Python'da dekorat\u00f6rler, fonksiyonlar\u0131n davran\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirmek i\u00e7in kullan\u0131lan g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Fonksiyonel programlaman\u0131n temel ta\u015flar\u0131ndan biri olan dekorat\u00f6rler, kod tekrar\u0131n\u0131 azalt\u0131r, okunabilirli\u011fi art\u0131r\u0131r ve kodun daha mod\u00fcler olmas\u0131n\u0131 sa\u011flar. Bu makalede, dekorat\u00f6rlerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ve kendi dekorat\u00f6rlerinizi nas\u0131l yazabilece\u011finizi ad\u0131m ad\u0131m a\u00e7\u0131klayaca\u011f\u0131z. 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