{"id":35154,"date":"2025-11-26T09:40:50","date_gmt":"2025-11-26T06:40:50","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=35154"},"modified":"2025-11-26T09:40:50","modified_gmt":"2025-11-26T06:40:50","slug":"pythonda-json-verilerini-okunabilir-sekilde-guzellestirerek-yazdirma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/pythonda-json-verilerini-okunabilir-sekilde-guzellestirerek-yazdirma\/","title":{"rendered":"Python’da JSON Verilerini Okunabilir \u015eekilde G\u00fczelle\u015ftirerek Yazd\u0131rma"},"content":{"rendered":"

<\/p>\n

Python’da JSON Verilerini Okunabilir \u015eekilde G\u00fczelle\u015ftirerek Yazd\u0131rma<\/h2>\n

Giri\u015f<\/h2>\n

G\u00fcn\u00fcm\u00fcz\u00fcn modern yaz\u0131l\u0131m d\u00fcnyas\u0131nda, veriler \u00e7o\u011fu zaman a\u011f \u00fczerinden veya depolama birimlerinde JSON (JavaScript Object Notation) format\u0131nda aktar\u0131l\u0131r ve saklan\u0131r. JSON, hafif, insan taraf\u0131ndan okunabilir ve dillerden ba\u011f\u0131ms\u0131z bir veri de\u011fi\u015fim format\u0131 olmas\u0131 nedeniyle web servislerinde, API ileti\u015fiminde, yap\u0131land\u0131rma dosyalar\u0131nda ve bir\u00e7ok farkl\u0131 uygulamada standart haline gelmi\u015ftir. Ancak, \u00f6zellikle b\u00fcy\u00fck veya karma\u015f\u0131k JSON yap\u0131lar\u0131yla \u00e7al\u0131\u015f\u0131rken, ham JSON verisi tek bir sat\u0131rda s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f veya d\u00fczensiz bir bi\u00e7imde sunulabilir. Bu durum, veriyi anlamay\u0131, hata ay\u0131klamay\u0131 ve manuel olarak incelemeyi olduk\u00e7a zorla\u015ft\u0131r\u0131r.<\/p>\n

\u0130\u015fte tam bu noktada “pretty printing” (g\u00fczelle\u015ftirerek yazd\u0131rma) devreye girer. JSON verilerini okunabilir bir formatta, do\u011fru girintileme (indentation) ve sat\u0131r sonlar\u0131 kullanarak d\u00fczenlemek, geli\u015ftiricilerin ve sistem y\u00f6neticilerinin i\u015fini b\u00fcy\u00fck \u00f6l\u00e7\u00fcde kolayla\u015ft\u0131r\u0131r. Python, bu i\u015flemi ger\u00e7ekle\u015ftirmek i\u00e7in g\u00fc\u00e7l\u00fc ve esnek ara\u00e7lar sunan json<\/code> ad\u0131nda yerle\u015fik bir mod\u00fcle sahiptir. Bu makalede, Python’da JSON verilerini nas\u0131l g\u00fczelle\u015ftirerek yazd\u0131raca\u011f\u0131m\u0131z\u0131, farkl\u0131 parametrelerin ne i\u015fe yarad\u0131\u011f\u0131n\u0131, geli\u015fmi\u015f senaryolar\u0131 ve en iyi uygulamalar\u0131 detayl\u0131 bir \u015fekilde inceleyece\u011fiz.<\/p>\n

JSON Nedir ve Neden \u00d6nemlidir?<\/h2>\n

JSON, “JavaScript Object Notation” kelimelerinin k\u0131saltmas\u0131d\u0131r ve ad\u0131ndan da anla\u015f\u0131laca\u011f\u0131 \u00fczere JavaScript’teki nesne literal syntax’\u0131ndan t\u00fcremi\u015ftir. Ancak, tamamen dillerden ba\u011f\u0131ms\u0131zd\u0131r ve C, C++, Java, Python, Ruby gibi bir\u00e7ok programlama dilinde kolayca ayr\u0131\u015ft\u0131r\u0131labilir ve \u00fcretilebilir. JSON, temel olarak iki yap\u0131dan olu\u015fur:<\/p>\n

1. Nesneler (Objects):<\/strong> S\u00fcsl\u00fc parantez {}<\/code> ile ba\u015flar ve biter. Anahtar\/de\u011fer \u00e7iftlerinden olu\u015fur. Anahtarlar string olmal\u0131 ve \u00e7ift t\u0131rnak i\u00e7inde yer almal\u0131d\u0131r. De\u011ferler ise string, say\u0131, boolean (true\/false), null, bir nesne veya bir dizi olabilir. \u00d6rne\u011fin: {\"isim\": \"Ahmet\", \"ya\u015f\": 30}<\/code>.
\n2. Diziler (Arrays):<\/strong> K\u00f6\u015feli parantez []<\/code> ile ba\u015flar ve biter. S\u0131ral\u0131 de\u011fer listeleridir. De\u011ferler string, say\u0131, boolean, null, bir nesne veya ba\u015fka bir dizi olabilir. \u00d6rne\u011fin: [1, 2, \"\u00fc\u00e7\", {\"anahtar\": \"de\u011fer\"}]<\/code>.<\/p>\n

JSON’\u0131n yayg\u0131nla\u015fmas\u0131n\u0131n temel nedenleri \u015funlard\u0131r:<\/p>\n

* \u0130nsan Taraf\u0131ndan Okunabilirlik:<\/strong> Yap\u0131s\u0131 gere\u011fi, XML gibi di\u011fer veri formatlar\u0131na k\u0131yasla daha az “g\u00fcr\u00fclt\u00fc” i\u00e7erir ve daha sezgiseldir.
\n* Hafiflik:<\/strong> Veri hacmi genellikle d\u00fc\u015f\u00fckt\u00fcr, bu da a\u011f \u00fczerinden h\u0131zl\u0131 aktar\u0131m sa\u011flar.
\n* Kolay Ayr\u0131\u015ft\u0131rma:<\/strong> \u00c7o\u011fu programlama dilinde JSON verilerini ayr\u0131\u015ft\u0131rmak (parse etmek) i\u00e7in haz\u0131r k\u00fct\u00fcphaneler bulunur. Python’\u0131n json<\/code> mod\u00fcl\u00fc buna g\u00fczel bir \u00f6rnektir.
\n* Esneklik:<\/strong> Karma\u015f\u0131k veri yap\u0131lar\u0131n\u0131 temsil edebilir.<\/p>\n

Modern web uygulamalar\u0131nda, API’ler genellikle JSON format\u0131nda yan\u0131t d\u00f6ner. Mobil uygulamalar sunucularla JSON \u00fczerinden ileti\u015fim kurar. Yap\u0131land\u0131rma dosyalar\u0131, log kay\u0131tlar\u0131 ve hatta baz\u0131 NoSQL veritabanlar\u0131 JSON benzeri dok\u00fcmanlar\u0131 kullan\u0131r. Bu yayg\u0131nl\u0131k, JSON verilerini etkin bir \u015fekilde y\u00f6netme ve \u00f6zellikle insan g\u00f6z\u00fcyle inceleme ihtiyac\u0131n\u0131 art\u0131rmaktad\u0131r.<\/p>\n

Pretty Printing’e Neden \u0130htiya\u00e7 Duyar\u0131z?<\/h2>\n

Ham JSON verisi, \u00f6zellikle bir API’den gelen veya bir dosyadan okunan b\u00fcy\u00fck bir veri k\u00fcmesi oldu\u011funda, genellikle tek bir sat\u0131rda veya \u00e7ok az girintiyle s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f bir bi\u00e7imde gelir. \u00d6rne\u011fin:<\/p>\n

{\"kitaplar\": [{\"id\": 1, \"ba\u015fl\u0131k\": \"Python Programlama\", \"yazar\": \"Ali Can\", \"y\u0131l\": 2020}, {\"id\": 2, \"ba\u015fl\u0131k\": \"Veri Bilimi Temelleri\", \"yazar\": \"Ay\u015fe Demir\", \"y\u0131l\": 2022}]}<\/code><\/pre>\n
Bu \u00f6rnek nispeten k\u0131sa olsa da, anahtarlar\u0131n ve de\u011ferlerin nerede ba\u015flay\u0131p bitti\u011fini, hangi nesnenin hangi diziye ait oldu\u011funu anlamak zordur. Ger\u00e7ek d\u00fcnya senaryolar\u0131nda bu veri \u00e7ok daha uzun ve i\u00e7 i\u00e7e ge\u00e7mi\u015f olabilir. Pretty printing, bu veriyi a\u015fa\u011f\u0131daki gibi daha okunabilir bir hale getirir:<\/p>\n
{\n    \"kitaplar\": [\n        {\n            \"id\": 1,\n            \"ba\u015fl\u0131k\": \"Python Programlama\",\n            \"yazar\": \"Ali Can\",\n            \"y\u0131l\": 2020\n        },\n        {\n            \"id\": 2,\n            \"ba\u015fl\u0131k\": \"Veri Bilimi Temelleri\",\n            \"yazar\": \"Ay\u015fe Demir\",\n            \"y\u0131l\": 2022\n        }\n    ]\n}<\/code><\/pre>\n
Bu d\u00fczenlemenin sa\u011flad\u0131\u011f\u0131 faydalar \u015funlard\u0131r:<\/p>\n
*   Hata Ay\u0131klama Kolayl\u0131\u011f\u0131:<\/strong> Bir API yan\u0131t\u0131nda veya bir veri yap\u0131s\u0131nda beklenen bir de\u011feri bulmak, pretty-printed formatta \u00e7ok daha h\u0131zl\u0131d\u0131r. Eksik veya yanl\u0131\u015f anahtarlar\u0131, hatal\u0131 veri tiplerini an\u0131nda fark edebilirsiniz.
\n*   Manuel \u0130nceleme:<\/strong> Geli\u015ftiriciler, test uzmanlar\u0131 veya hatta son kullan\u0131c\u0131lar (yap\u0131land\u0131rma dosyalar\u0131 i\u00e7in) veriyi daha kolay anlayabilir ve do\u011frulayabilir.
\n*   Kar\u015f\u0131la\u015ft\u0131rma (Diffing):<\/strong> Versiyon kontrol sistemlerinde (Git gibi) iki farkl\u0131 JSON dosyas\u0131n\u0131n veya ayn\u0131 dosyan\u0131n farkl\u0131 versiyonlar\u0131n\u0131n kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131 (diff alma), pretty-printed formatta daha anlaml\u0131d\u0131r. Her de\u011fi\u015fiklik ayr\u0131 bir sat\u0131rda g\u00f6sterilece\u011fi i\u00e7in farklar daha belirgin olur.
\n*   Tutarl\u0131 Bi\u00e7imlendirme:<\/strong> JSON dosyalar\u0131n\u0131n veya \u00e7\u0131kt\u0131lar\u0131n\u0131n her zaman ayn\u0131 standartta olmas\u0131n\u0131 sa\u011flayarak ekip i\u00e7i tutarl\u0131l\u0131\u011f\u0131 art\u0131r\u0131r.
\n*   Dok\u00fcmantasyon:<\/strong> API dok\u00fcmantasyonlar\u0131nda veya \u00f6rnek \u00e7\u0131kt\u0131larda pretty-printed JSON kullanmak, \u00f6rneklerin daha anla\u015f\u0131l\u0131r olmas\u0131n\u0131 sa\u011flar.<\/p>\n
Python’da JSON ile \u00c7al\u0131\u015fmak: json<\/code> Mod\u00fcl\u00fc<\/h2>\n
Python’\u0131n standart k\u00fct\u00fcphanesinde yer alan json<\/code> mod\u00fcl\u00fc, JSON verilerini Python nesnelerine d\u00f6n\u00fc\u015ft\u00fcrmek (deserialization) ve Python nesnelerini JSON format\u0131na d\u00f6n\u00fc\u015ft\u00fcrmek (serialization) i\u00e7in gerekli t\u00fcm fonksiyonlar\u0131 sa\u011flar.<\/p>\n
Temel fonksiyonlar \u015funlard\u0131r:<\/p>\n
*   json.loads(json_string)<\/code>:<\/strong> JSON format\u0131ndaki bir string’i Python s\u00f6zl\u00fc\u011f\u00fcne veya listesine d\u00f6n\u00fc\u015ft\u00fcr\u00fcr. (load<\/code> string’den s<\/code> gelir)
\n*   json.dumps(python_object)<\/code>:<\/strong> Python s\u00f6zl\u00fc\u011f\u00fcn\u00fc veya listesini JSON format\u0131nda bir string’e d\u00f6n\u00fc\u015ft\u00fcr\u00fcr. (dump<\/code> string’e s<\/code> gelir)
\n*   json.load(file_object)<\/code>:<\/strong> Bir dosya nesnesinden JSON verilerini okur ve Python s\u00f6zl\u00fc\u011f\u00fcne veya listesine d\u00f6n\u00fc\u015ft\u00fcr\u00fcr.
\n*   json.dump(python_object, file_object)<\/code>:<\/strong> Bir Python s\u00f6zl\u00fc\u011f\u00fcn\u00fc veya listesini JSON format\u0131nda bir dosyaya yazar.<\/p>\n
\u0130\u015fte basit bir \u00f6rnek:<\/p>\n
import json\n\n
JSON string'i<\/h2>\njson_string = '{\"isim\": \"Ay\u015fe\", \"ya\u015f\": 28, \"\u015fehir\": \"Ankara\"}'\n\n
JSON string'ini Python nesnesine d\u00f6n\u00fc\u015ft\u00fcrme (deserialization)<\/h2>\npython_dict = json.loads(json_string)\nprint(\"Python S\u00f6zl\u00fc\u011f\u00fc:\", python_dict)\nprint(\"Tip:\", type(python_dict))\n\n
Python nesnesini JSON string'ine d\u00f6n\u00fc\u015ft\u00fcrme (serialization)<\/h2>\nnew_data = {\n    \"\u00fcr\u00fcn\": \"Laptop\",\n    \"fiyat\": 1200.50,\n    \"stokta_var\": True,\n    \"\u00f6zellikler\": [\"i7 i\u015flemci\", \"16GB RAM\"]\n}\njson_output = json.dumps(new_data)\nprint(\"JSON String:\", json_output)\nprint(\"Tip:\", type(json_output))<\/code><\/pre>\n
\u00c7\u0131kt\u0131:<\/p>\n
Python S\u00f6zl\u00fc\u011f\u00fc: {'isim': 'Ay\u015fe', 'ya\u015f': 28, '\u015fehir': 'Ankara'}\nTip: \nJSON String: {\"\u00fcr\u00fcn\": \"Laptop\", \"fiyat\": 1200.5, \"stokta_var\": true, \"\u00f6zellikler\": [\"i7 i\u015flemci\", \"16GB RAM\"]}\nTip: <\/code><\/pre>\n
G\u00f6r\u00fcld\u00fc\u011f\u00fc gibi, json.dumps()<\/code> varsay\u0131lan olarak \u00e7\u0131kt\u0131y\u0131 s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f, tek sat\u0131rl\u0131k bir formatta verir. \u0130\u015fte bu noktada pretty printing \u00f6zelliklerini kullanmaya ba\u015flayaca\u011f\u0131z.<\/p>\n
JSON Verilerini G\u00fczelle\u015ftirerek Yazd\u0131rma: Temel Y\u00f6ntemler<\/h2>\n
json.dumps()<\/code> fonksiyonu, \u00e7\u0131kt\u0131y\u0131 \u00f6zelle\u015ftirmek i\u00e7in \u00e7e\u015fitli parametreler sunar. Pretty printing i\u00e7in en \u00f6nemli parametre indent<\/code>‘tir.<\/p>\n
json.dumps()<\/code> ile G\u00fczelle\u015ftirme: indent<\/code> Parametresi<\/h3>\n
indent<\/code> parametresi, her girinti seviyesi i\u00e7in kullan\u0131lacak bo\u015fluk veya karakter say\u0131s\u0131n\u0131 belirtir.<\/p>\n
*   indent<\/code> bir tam say\u0131 olarak:<\/strong> Pozitif bir tam say\u0131 verirseniz, JSON \u00e7\u0131kt\u0131s\u0131ndaki her girinti seviyesi i\u00e7in o kadar bo\u015fluk karakteri kullan\u0131l\u0131r. Genellikle 2 veya 4 bo\u015fluk kullan\u0131l\u0131r.
\n*   indent<\/code> bir string olarak:<\/strong> E\u011fer bir string verirseniz (\u00f6rn. '\\t'<\/code> sekme karakteri i\u00e7in), bu string girinti olarak kullan\u0131l\u0131r.<\/p>\n
\u015eimdi bir \u00f6rnekle indent<\/code> parametresinin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 g\u00f6relim:<\/p>\n
import json\n\ndata = {\n    \"kullan\u0131c\u0131lar\": [\n        {\n            \"id\": 101,\n            \"ad\": \"Mehmet\",\n            \"soyad\": \"Y\u0131lmaz\",\n            \"email\": \"mehmet.yilmaz@example.com\",\n            \"adres\": {\n                \"sokak\": \"G\u00fcl Sokak 5\",\n                \"\u015fehir\": \"\u0130stanbul\",\n                \"posta_kodu\": \"34000\"\n            },\n            \"hobiler\": [\"okuma\", \"y\u00fczme\"]\n        },\n        {\n            \"id\": 102,\n            \"ad\": \"Zeynep\",\n            \"soyad\": \"Kaya\",\n            \"email\": \"zeynep.kaya@example.com\",\n            \"adres\": {\n                \"sokak\": \"Menek\u015fe Cad. 12\",\n                \"\u015fehir\": \"\u0130zmir\",\n                \"posta_kodu\": \"35000\"\n            },\n            \"hobiler\": [\"ko\u015fu\", \"resim yapma\"]\n        }\n    ],\n    \"toplam_kullan\u0131c\u0131\": 2,\n    \"son_g\u00fcncelleme\": \"2023-10-27\"\n}\n\nprint(\"--- Orijinal, s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f \u00e7\u0131kt\u0131 ---\")\nprint(json.dumps(data))\n\nprint(\"\\n--- 4 bo\u015fluk ile g\u00fczelle\u015ftirilmi\u015f \u00e7\u0131kt\u0131 ---\")\npretty_json_4_spaces = json.dumps(data, indent=4)\nprint(pretty_json_4_spaces)\n\nprint(\"\\n--- 2 bo\u015fluk ile g\u00fczelle\u015ftirilmi\u015f \u00e7\u0131kt\u0131 ---\")\npretty_json_2_spaces = json.dumps(data, indent=2)\nprint(pretty_json_2_spaces)\n\nprint(\"\\n--- Sekme (tab) ile g\u00fczelle\u015ftirilmi\u015f \u00e7\u0131kt\u0131 ---\")\npretty_json_tabs = json.dumps(data, indent='\\t')\nprint(pretty_json_tabs)<\/code><\/pre>\n
\u00c7\u0131kt\u0131n\u0131n bir k\u0131sm\u0131 (4 bo\u015fluklu \u00f6rnek i\u00e7in):<\/p>\n
--- 4 bo\u015fluk ile g\u00fczelle\u015ftirilmi\u015f \u00e7\u0131kt\u0131 ---\n{\n    \"kullan\u0131c\u0131lar\": [\n        {\n            \"id\": 101,\n            \"ad\": \"Mehmet\",\n            \"soyad\": \"Y\u0131lmaz\",\n            \"email\": \"mehmet.yilmaz@example.com\",\n            \"adres\": {\n                \"sokak\": \"G\u00fcl Sokak 5\",\n                \"\u015fehir\": \"\u0130stanbul\",\n                \"posta_kodu\": \"34000\"\n            },\n            \"hobiler\": [\n                \"okuma\",\n                \"y\u00fczme\"\n            ]\n        },\n        {\n            \"id\": 102,\n            \"ad\": \"Zeynep\",\n            \"soyad\": \"Kaya\",\n            \"email\": \"zeynep.kaya@example.com\",\n            \"adres\": {\n                \"sokak\": \"Menek\u015fe Cad. 12\",\n                \"\u015fehir\": \"\u0130zmir\",\n                \"posta_kodu\": \"35000\"\n            },\n            \"hobiler\": [\n                \"ko\u015fu\",\n                \"resim yapma\"\n            ]\n        }\n    ],\n    \"toplam_kullan\u0131c\u0131\": 2,\n    \"son_g\u00fcncelleme\": \"2023-10-27\"\n}<\/code><\/pre>\n
Bu \u00e7\u0131kt\u0131, veri yap\u0131s\u0131n\u0131 \u00e7ok daha net bir \u015fekilde g\u00f6zler \u00f6n\u00fcne serer. Her i\u00e7 i\u00e7e ge\u00e7mi\u015f seviye, belirtilen say\u0131da bo\u015fluk veya sekme ile girintilenir.<\/p>\n
sort_keys<\/code> Parametresi<\/h3>\n
sort_keys<\/code> parametresi, s\u00f6zl\u00fcklerdeki anahtarlar\u0131n alfabetik s\u0131raya g\u00f6re s\u0131ralan\u0131p s\u0131ralanmayaca\u011f\u0131n\u0131 belirler. Varsay\u0131lan de\u011feri False<\/code>‘tur. True<\/code> olarak ayarland\u0131\u011f\u0131nda, \u00e7\u0131kt\u0131daki t\u00fcm anahtarlar s\u0131ral\u0131 bir \u015fekilde g\u00f6r\u00fcn\u00fcr. Bu, \u00f6zellikle iki JSON \u00e7\u0131kt\u0131s\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131r\u0131rken veya \u00e7\u0131kt\u0131n\u0131n deterministik (her zaman ayn\u0131) olmas\u0131n\u0131 istedi\u011finizde \u00e7ok faydal\u0131d\u0131r.<\/p>\n
import json\n\ndata = {\n    \"b\": 2,\n    \"a\": 1,\n    \"c\": 3,\n    \"nested\": {\n        \"z\": 26,\n        \"y\": 25\n    }\n}\n\nprint(\"--- Anahtarlar s\u0131ralanmam\u0131\u015f (varsay\u0131lan) ---\")\nprint(json.dumps(data, indent=4))\n\nprint(\"\\n--- Anahtarlar s\u0131ralanm\u0131\u015f ---\")\nprint(json.dumps(data, indent=4, sort_keys=True))<\/code><\/pre>\n
\u00c7\u0131kt\u0131 (s\u0131ralanm\u0131\u015f hali):<\/p>\n
--- Anahtarlar s\u0131ralanm\u0131\u015f ---\n{\n    \"a\": 1,\n    \"b\": 2,\n    \"c\": 3,\n    \"nested\": {\n        \"y\": 25,\n        \"z\": 26\n    }\n}<\/code><\/pre>\n
G\u00f6r\u00fcld\u00fc\u011f\u00fc gibi, hem ana d\u00fczeydeki anahtarlar (a<\/code>, b<\/code>, c<\/code>) hem de i\u00e7 i\u00e7e ge\u00e7mi\u015f s\u00f6zl\u00fckteki anahtarlar (y<\/code>, z<\/code>) alfabetik olarak s\u0131ralanm\u0131\u015ft\u0131r.<\/p>\n
separators<\/code> Parametresi<\/h3>\n
separators<\/code> parametresi, anahtar\/de\u011fer \u00e7iftleri aras\u0131ndaki ve dizi elemanlar\u0131 aras\u0131ndaki ayrac\u0131 belirlemek i\u00e7in kullan\u0131l\u0131r. Bu parametre, iki elemanl\u0131 bir tuple al\u0131r: (item_separator, key_separator)<\/code>. Varsay\u0131lan de\u011feri (', ', ': ')<\/code> \u015feklindedir, yani virg\u00fcl sonras\u0131 bir bo\u015fluk ve iki nokta sonras\u0131 bir bo\u015fluk b\u0131rak\u0131r.<\/p>\n
Pretty printing yaparken indent<\/code> kullan\u0131ld\u0131\u011f\u0131 i\u00e7in, separators<\/code> parametresi genellikle \u00e7ok fazla fark yaratmaz \u00e7\u00fcnk\u00fc her eleman zaten ayr\u0131 bir sat\u0131ra yaz\u0131l\u0131r. Ancak, s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f \u00e7\u0131kt\u0131y\u0131 \u00f6zelle\u015ftirmek istedi\u011finizde veya belirli bir formatlama ihtiyac\u0131n\u0131z oldu\u011funda kullan\u0131\u015fl\u0131 olabilir. \u00d6rne\u011fin, hi\u00e7 bo\u015fluk b\u0131rakmadan s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f bir \u00e7\u0131kt\u0131 almak i\u00e7in:<\/p>\n
import json\n\ndata = {\"ad\": \"Ali\", \"ya\u015f\": 30}\n\nprint(\"--- Varsay\u0131lan ayra\u00e7lar (s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f) ---\")\nprint(json.dumps(data)) # \u00c7\u0131kt\u0131: {\"ad\": \"Ali\", \"ya\u015f\": 30}\n\nprint(\"\\n--- Bo\u015fluksuz ayra\u00e7lar (s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f) ---\")\nprint(json.dumps(data, separators=(',', ':'))) # \u00c7\u0131kt\u0131: {\"ad\":\"Ali\",\"ya\u015f\":30}\n\nprint(\"\\n--- Pretty print ile ayra\u00e7lar (fark az) ---\")\nprint(json.dumps(data, indent=4, separators=(',', ':')))<\/code><\/pre>\n
Pretty print ile separators<\/code> kullan\u0131ld\u0131\u011f\u0131nda, \u00e7\u0131kt\u0131n\u0131n okunabilirli\u011fini indent<\/code> zaten sa\u011flad\u0131\u011f\u0131 i\u00e7in separators<\/code>‘\u0131n etkisi genellikle minimaldir. Genellikle indent<\/code> ile birlikte separators<\/code>‘\u0131 de\u011fi\u015ftirmeye gerek kalmaz, ancak \u00f6zel durumlar i\u00e7in bilmekte fayda var.<\/p>\n
ensure_ascii<\/code> Parametresi<\/h3>\n
ensure_ascii<\/code> parametresi, JSON \u00e7\u0131kt\u0131s\u0131ndaki ASCII olmayan karakterlerin (\u00f6rn. T\u00fcrk\u00e7e karakterler, \u00f6zel semboller) nas\u0131l i\u015flenece\u011fini kontrol eder. Varsay\u0131lan de\u011feri True<\/code>‘dur.<\/p>\n
*   ensure_ascii=True<\/code> (varsay\u0131lan):<\/strong> ASCII olmayan t\u00fcm karakterler \\uXXXX<\/code> format\u0131nda Unicode ka\u00e7\u0131\u015f dizileri olarak kodlan\u0131r. Bu, \u00e7\u0131kt\u0131n\u0131n sadece ASCII karakterlerden olu\u015fmas\u0131n\u0131 sa\u011flar ve eski sistemlerle uyumluluk i\u00e7in faydal\u0131 olabilir.
\n*   ensure_ascii=False<\/code>:<\/strong> ASCII olmayan karakterler do\u011frudan UTF-8 olarak yaz\u0131l\u0131r. Bu, \u00e7\u0131kt\u0131n\u0131n daha okunabilir olmas\u0131n\u0131 sa\u011flar ve modern sistemlerde tercih edilen yakla\u015f\u0131md\u0131r.<\/p>\n
import json\n\ndata_with_turkish = {\n    \"isim\": \"G\u00fcl\u015fah\",\n    \"\u015fehir\": \"\u0130stanbul\",\n    \"\u00f6zellik\": \"\u00d6zel Karakterler: \u00e7, \u011f, \u0131, \u00f6, \u015f, \u00fc\"\n}\n\nprint(\"--- ensure_ascii=True (varsay\u0131lan) ---\")\nprint(json.dumps(data_with_turkish, indent=4, ensure_ascii=True))\n\nprint(\"\\n--- ensure_ascii=False ---\")\nprint(json.dumps(data_with_turkish, indent=4, ensure_ascii=False))<\/code><\/pre>\n
\u00c7\u0131kt\u0131 (ensure_ascii=False i\u00e7in):<\/p>\n
--- ensure_ascii=False ---\n{\n    \"isim\": \"G\u00fcl\u015fah\",\n    \"\u015fehir\": \"\u0130stanbul\",\n    \"\u00f6zellik\": \"\u00d6zel Karakterler: \u00e7, \u011f, \u0131, \u00f6, \u015f, \u00fc\"\n}<\/code><\/pre>\n
G\u00f6r\u00fcld\u00fc\u011f\u00fc \u00fczere, ensure_ascii=False<\/code> kullan\u0131ld\u0131\u011f\u0131nda T\u00fcrk\u00e7e karakterler do\u011frudan ve okunabilir bir \u015fekilde \u00e7\u0131kt\u0131ya yans\u0131r. G\u00fcn\u00fcm\u00fczdeki \u00e7o\u011fu durumda, ensure_ascii=False<\/code> kullanmak daha do\u011fru ve kullan\u0131c\u0131 dostu bir yakla\u015f\u0131md\u0131r.<\/p>\n
Dosyalara JSON Yazd\u0131rma: json.dump()<\/code> ile G\u00fczelle\u015ftirme<\/h2>\n
json.dump()<\/code> fonksiyonu, json.dumps()<\/code> ile ayn\u0131 parametreleri kabul eder ve bu parametreler sayesinde do\u011frudan bir dosyaya pretty-printed JSON yaz\u0131labilir. Bu, yap\u0131land\u0131rma dosyalar\u0131n\u0131 veya b\u00fcy\u00fck veri setlerini kaydederken olduk\u00e7a kullan\u0131\u015fl\u0131d\u0131r.<\/p>\n
import json\n\ndata_to_save = {\n    \"ayarlar\": {\n        \"dil\": \"T\u00fcrk\u00e7e\",\n        \"tema\": \"koyu\",\n        \"bildirimler\": True\n    },\n    \"kullan\u0131c\u0131_profili\": {\n        \"id\": \"abc123\",\n        \"ad\": \"Deniz\",\n        \"email_onayl\u0131\": True\n    },\n    \"versiyon\": \"1.0.5\"\n}\n\nfile_name = \"ayarlar.json\"\n\n
Dosyaya pretty-printed JSON yazma<\/h2>\nwith open(file_name, 'w', encoding='utf-8') as f:\n    json.dump(data_to_save, f, indent=4, sort_keys=True, ensure_ascii=False)\n\nprint(f\"Veri '{file_name}' dosyas\u0131na pretty-printed olarak kaydedildi.\")\n\n
Kaydedilen dosyay\u0131 okuyup konsola yazd\u0131rma<\/h2>\nprint(f\"\\n--- '{file_name}' dosyas\u0131n\u0131n i\u00e7eri\u011fi ---\")\nwith open(file_name, 'r', encoding='utf-8') as f:\n    print(f.read())<\/code><\/pre>\n
ayarlar.json<\/code> dosyas\u0131n\u0131n i\u00e7eri\u011fi a\u015fa\u011f\u0131daki gibi olacakt\u0131r:<\/p>\n
{\n    \"ayarlar\": {\n        \"bildirimler\": true,\n        \"dil\": \"T\u00fcrk\u00e7e\",\n        \"tema\": \"koyu\"\n    },\n    \"kullan\u0131c\u0131_profili\": {\n        \"ad\": \"Deniz\",\n        \"email_onayl\u0131\": true,\n        \"id\": \"abc123\"\n    },\n    \"versiyon\": \"1.0.5\"\n}<\/code><\/pre>\n
Burada encoding='utf-8'<\/code> parametresini open()<\/code> fonksiyonuna eklemek, T\u00fcrk\u00e7e karakterlerin do\u011fru bir \u015fekilde dosyaya yaz\u0131lmas\u0131n\u0131 sa\u011flar. ensure_ascii=False<\/code> ile birlikte bu ikili, uluslararas\u0131 karakterlerle \u00e7al\u0131\u015f\u0131rken en iyi uygulamad\u0131r.<\/p>\n
Geli\u015fmi\u015f G\u00fczelle\u015ftirme Senaryolar\u0131 ve \u0130pu\u00e7lar\u0131<\/h2>\n
default<\/code> Parametresi ile \u00d6zel Nesneleri \u0130\u015fleme<\/h3>\n
JSON, sadece temel veri tiplerini (string, number, boolean, null, array, object) destekler. Python’da datetime<\/code> nesneleri, \u00f6zel s\u0131n\u0131f \u00f6rnekleri gibi baz\u0131 nesneler do\u011frudan JSON’a d\u00f6n\u00fc\u015ft\u00fcr\u00fclemez. json.dumps()<\/code> ve json.dump()<\/code> fonksiyonlar\u0131, b\u00f6yle durumlar i\u00e7in bir default<\/code> parametresi sunar. Bu parametre, serile\u015ftirilemeyen bir nesneyle kar\u015f\u0131la\u015f\u0131ld\u0131\u011f\u0131nda \u00e7a\u011fr\u0131lacak bir fonksiyon al\u0131r.<\/p>\n
Bu fonksiyon, serile\u015ftirilemeyen nesneyi JSON uyumlu bir formata (genellikle bir string veya s\u00f6zl\u00fck) d\u00f6n\u00fc\u015ft\u00fcrmekten sorumludur.<\/p>\n
import json\nimport datetime\n\nclass MyCustomClass:\n    def __init__(self, name, value):\n        self.name = name\n        self.value = value\n\n    def __repr__(self):\n        return f\"MyCustomClass(name='{self.name}', value={self.value})\"\n\ndef custom_json_encoder(obj):\n    if isinstance(obj, datetime.datetime):\n        return obj.isoformat() # datetime nesnesini ISO format\u0131nda string'e \u00e7evir\n    elif isinstance(obj, MyCustomClass):\n        return {\"_type\": \"MyCustomClass\", \"name\": obj.name, \"value\": obj.value} # \u00d6zel s\u0131n\u0131f\u0131 s\u00f6zl\u00fc\u011fe \u00e7evir\n    raise TypeError(f\"Object of type {obj.__class__.__name__} is not JSON serializable\")\n\ndata_with_custom_objects = {\n    \"olay_zaman\u0131\": datetime.datetime.now(),\n    \"\u00f6zel_nesne\": MyCustomClass(\"\u00d6rnek\", 123),\n    \"veri\": [1, 2, 3]\n}\n\nprint(\"--- \u00d6zel nesnelerle pretty-printed JSON ---\")\npretty_json_custom = json.dumps(data_with_custom_objects, indent=4, default=custom_json_encoder, ensure_ascii=False)\nprint(pretty_json_custom)<\/code><\/pre>\n
\u00c7\u0131kt\u0131:<\/p>\n
--- \u00d6zel nesnelerle pretty-printed JSON ---\n{\n    \"olay_zaman\u0131\": \"2023-10-27T10:30:00.123456\",\n    \"\u00f6zel_nesne\": {\n        \"_type\": \"MyCustomClass\",\n        \"name\": \"\u00d6rnek\",\n        \"value\": 123\n    },\n    \"veri\": [\n        1,\n        2,\n        3\n    ]\n}<\/code><\/pre>\n
Bu sayede, datetime<\/code> nesnesi ISO format\u0131nda bir string’e, MyCustomClass<\/code> nesnesi ise bir s\u00f6zl\u00fc\u011fe d\u00f6n\u00fc\u015ft\u00fcr\u00fclerek JSON uyumlu hale getirilmi\u015ftir.<\/p>\n
B\u00fcy\u00fck JSON Dosyalar\u0131 ve Performans<\/h3>\n
Pretty printing, okunabilirli\u011fi art\u0131r\u0131rken baz\u0131 maliyetleri de beraberinde getirir:
\n*   Dosya Boyutu:<\/strong> Ek bo\u015fluklar ve sat\u0131r sonlar\u0131 nedeniyle pretty-printed JSON dosyalar\u0131, s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f hallerine g\u00f6re daha b\u00fcy\u00fck olur. Bu, depolama alan\u0131n\u0131 ve a\u011f \u00fczerinden aktar\u0131m s\u00fcresini art\u0131rabilir.
\n*   Performans:<\/strong> Ek karakterlerin olu\u015fturulmas\u0131 ve i\u015flenmesi, \u00f6zellikle \u00e7ok b\u00fcy\u00fck JSON dosyalar\u0131 i\u00e7in serile\u015ftirme s\u00fcresini biraz uzatabilir.<\/p>\n
Bu nedenle, pretty printing’i ne zaman kullanaca\u011f\u0131n\u0131za dikkat etmek \u00f6nemlidir:
\n*   Hata ay\u0131klama, manuel inceleme, yap\u0131land\u0131rma dosyalar\u0131:<\/strong> Pretty printing idealdir.
\n*   API yan\u0131tlar\u0131, performans kritik veri aktar\u0131mlar\u0131, loglama (b\u00fcy\u00fck hacimli):<\/strong> Genellikle s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f JSON tercih edilir. \u0130nsan taraf\u0131ndan okunmas\u0131 gerekmeyen durumlarda indent<\/code> parametresini kullanmaktan ka\u00e7\u0131n\u0131n.<\/p>\n
Pratik Kullan\u0131m Alanlar\u0131 ve En \u0130yi Uygulamalar<\/h2>\n
Pretty printing’in g\u00fcnl\u00fck geli\u015ftirme s\u00fcre\u00e7lerindeki faydalar\u0131 saymakla bitmez:<\/p>\n
*   API Yan\u0131tlar\u0131n\u0131 Hata Ay\u0131klarken:<\/strong> Bir web API’sinden gelen JSON yan\u0131t\u0131n\u0131 do\u011frudan konsola veya bir log dosyas\u0131na yazd\u0131r\u0131rken indent=4<\/code> kullanmak, yan\u0131t\u0131n yap\u0131s\u0131n\u0131 an\u0131nda g\u00f6rmenizi ve hatalar\u0131 tespit etmenizi sa\u011flar.
\n*   Yap\u0131land\u0131rma Dosyalar\u0131:<\/strong> Uygulama ayarlar\u0131n\u0131 JSON dosyalar\u0131nda sakl\u0131yorsan\u0131z, bu dosyalar\u0131 pretty-printed olarak kaydetmek, geli\u015ftiricilerin veya sistem y\u00f6neticilerinin bu ayarlar\u0131 kolayca okumas\u0131n\u0131 ve d\u00fczenlemesini sa\u011flar.
\n*   Loglama ve Denetim Kay\u0131tlar\u0131:<\/strong> Baz\u0131 durumlarda, \u00f6nemli olaylar\u0131n veya i\u015flemlerin detaylar\u0131n\u0131 JSON format\u0131nda loglamak isteyebilirsiniz. Pretty printing, bu loglar\u0131n daha sonra incelenmesini kolayla\u015ft\u0131r\u0131r. Ancak y\u00fcksek hacimli loglar i\u00e7in performans ve depolama maliyetini g\u00f6z \u00f6n\u00fcnde bulundurmak gerekir.
\n*   Dok\u00fcmantasyon i\u00e7in \u00d6rnek JSON \u00c7\u0131kt\u0131s\u0131 \u00dcretirken:<\/strong> API dok\u00fcmantasyonu veya kullan\u0131c\u0131 k\u0131lavuzlar\u0131 i\u00e7in \u00f6rnek JSON verisi sa\u011flarken, pretty-printed format kullanmak, \u00f6rneklerin netli\u011fini art\u0131r\u0131r.
\n*   S\u00fcr\u00fcm Kontrol Sistemlerinde Farklar\u0131 Daha Net G\u00f6rmek \u0130\u00e7in:<\/strong> JSON tabanl\u0131 yap\u0131land\u0131rma dosyalar\u0131n\u0131 veya veri \u015femalar\u0131n\u0131 Git gibi bir s\u00fcr\u00fcm kontrol sisteminde y\u00f6netirken, pretty-printed format, iki farkl\u0131 versiyon aras\u0131ndaki de\u011fi\u015fiklikleri (diff) daha kolay takip etmenizi sa\u011flar. E\u011fer s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f olsayd\u0131, k\u00fc\u00e7\u00fck bir de\u011fi\u015fiklik bile t\u00fcm dosyan\u0131n de\u011fi\u015fmi\u015f gibi g\u00f6r\u00fcnmesine neden olabilirdi.<\/p>\n
En \u0130yi Uygulama:<\/strong> \u00c7\u0131kt\u0131n\u0131n insan taraf\u0131ndan okunmas\u0131 veya incelenmesi gereken her durumda pretty printing kullan\u0131n. Performans veya dosya boyutu kritik oldu\u011funda, s\u0131k\u0131\u015ft\u0131r\u0131lm\u0131\u015f format\u0131 tercih edin. ensure_ascii=False<\/code> ve encoding='utf-8'<\/code> ikilisini kullanarak T\u00fcrk\u00e7e ve di\u011fer uluslararas\u0131 karakterlerin do\u011fru g\u00f6sterildi\u011finden emin olun.<\/p>\n
Alternatif K\u00fct\u00fcphaneler ve Ara\u00e7lar<\/h2>\n
Python’\u0131n json<\/code> mod\u00fcl\u00fc, pretty printing i\u00e7in \u00e7o\u011fu ihtiyac\u0131 kar\u015f\u0131lar. Ancak, bazen farkl\u0131 ara\u00e7lar veya k\u00fct\u00fcphaneler de faydal\u0131 olabilir:<\/p>\n
pprint<\/code> Mod\u00fcl\u00fc<\/h3>\n
Python’\u0131n standart k\u00fct\u00fcphanesindeki pprint<\/code> (pretty print) mod\u00fcl\u00fc, herhangi bir Python veri yap\u0131s\u0131n\u0131 (s\u00f6zl\u00fckler, listeler, k\u00fcmeler vb.) okunabilir bir formatta yazd\u0131rmak i\u00e7in tasarlanm\u0131\u015ft\u0131r. JSON \u00f6zelinde olmasa da, bir JSON string’ini Python nesnesine d\u00f6n\u00fc\u015ft\u00fcrd\u00fckten sonra bu nesneyi pprint<\/code> ile yazd\u0131rabilirsiniz.<\/p>\n
import json\nimport pprint\n\njson_data = '{\"ad\": \"Emre\", \"ya\u015f\": 35, \"adres\": {\"sokak\": \"Yeni Cad.\", \"\u015fehir\": \"Bursa\"}}'\npython_obj = json.loads(json_data)\n\nprint(\"--- pprint ile \u00e7\u0131kt\u0131 ---\")\npprint.pprint(python_obj)<\/code><\/pre>\n
\u00c7\u0131kt\u0131:<\/p>\n
--- pprint ile \u00e7\u0131kt\u0131 ---\n{'ad': 'Emre',\n 'adres': {'\u015fehir': 'Bursa', 'sokak': 'Yeni Cad.'},\n 'ya\u015f': 35}<\/code><\/pre>\n
pprint<\/code>‘in anahtarlar\u0131 varsay\u0131lan olarak s\u0131ralad\u0131\u011f\u0131n\u0131 ve belirli bir girintileme stilini kulland\u0131\u011f\u0131n\u0131 fark edeceksiniz. Ancak, json.dumps(indent=...)<\/code> do\u011frudan JSON string’i \u00fcretti\u011fi i\u00e7in, JSON \u00e7\u0131kt\u0131s\u0131 gerekti\u011finde genellikle json<\/code> mod\u00fcl\u00fc tercih edilir. pprint<\/code> daha \u00e7ok Python objelerinin kendisini incelemek i\u00e7in kullan\u0131l\u0131r.<\/p>\n
Harici JSON G\u00fczelle\u015ftiriciler ve Ara\u00e7lar<\/h3>\n
Kod yazarken veya terminalde \u00e7al\u0131\u015f\u0131rken, h\u0131zl\u0131 JSON g\u00fczelle\u015ftirme i\u00e7in \u00e7e\u015fitli harici ara\u00e7lar da mevcuttur:<\/p>\n
*   Online JSON G\u00fczelle\u015ftiriciler:<\/strong> Bir\u00e7ok web sitesi, yap\u0131\u015ft\u0131r\u0131lan JSON verisini an\u0131nda pretty-print eden ara\u00e7lar sunar (\u00f6rn. jsonformatter.org, jsonlint.com).
\n*   IDE Eklentileri:<\/strong> VS Code, PyCharm gibi modern IDE’ler, JSON dosyalar\u0131n\u0131 otomatik olarak formatlamak veya se\u00e7ilen JSON metnini g\u00fczelle\u015ftirmek i\u00e7in yerle\u015fik \u00f6zelliklere veya eklentilere sahiptir.
\n*   Komut Sat\u0131r\u0131 Ara\u00e7lar\u0131 (jq<\/code>):<\/strong> jq<\/code>, JSON verilerini komut sat\u0131r\u0131nda i\u015flemek i\u00e7in g\u00fc\u00e7l\u00fc ve esnek bir ara\u00e7t\u0131r. JSON verilerini filtreleyebilir, d\u00f6n\u00fc\u015ft\u00fcrebilir ve elbette pretty-print edebilir. \u00d6rne\u011fin: cat data.json | jq .<\/code> komutu, data.json<\/code> dosyas\u0131n\u0131 pretty-print eder.
\n*   Taray\u0131c\u0131 Eklentileri:<\/strong> Firefox ve Chrome gibi taray\u0131c\u0131lar i\u00e7in JSON yan\u0131tlar\u0131n\u0131 otomatik olarak pretty-print eden eklentiler mevcuttur (\u00f6rn. JSON Viewer, JSON Formatter).<\/p>\n
Bu ara\u00e7lar, Python kodu yazma ihtiyac\u0131 olmadan h\u0131zl\u0131 ve anl\u0131k JSON incelemeleri i\u00e7in \u00e7ok kullan\u0131\u015fl\u0131d\u0131r.<\/p>\n
Sonu\u00e7<\/h2>\n
Python’da JSON verilerini pretty-print etmek, json<\/code> mod\u00fcl\u00fcn\u00fcn dumps()<\/code> ve dump()<\/code> fonksiyonlar\u0131n\u0131n indent<\/code> parametresi sayesinde son derece kolay ve g\u00fc\u00e7l\u00fc bir i\u015flemdir. Bu basit ama etkili \u00f6zellik, karma\u015f\u0131k veri yap\u0131lar\u0131n\u0131 insan taraf\u0131ndan okunabilir bir formata d\u00f6n\u00fc\u015ft\u00fcrerek hata ay\u0131klama, veri inceleme ve genel geli\u015ftirici deneyimini \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftirir.<\/p>\n
indent<\/code>, sort_keys<\/code>, ensure_ascii<\/code> ve default<\/code> gibi parametreleri do\u011fru bir \u015fekilde kullanarak, \u00e7\u0131kt\u0131n\u0131z\u0131 ihtiya\u00e7lar\u0131n\u0131za g\u00f6re hassas bir \u015fekilde ayarlayabilirsiniz. \u00d6zellikle ensure_ascii=False<\/code> ve UTF-8 kodlamas\u0131, uluslararas\u0131 karakterlerle \u00e7al\u0131\u015f\u0131rken vazge\u00e7ilmezdir.<\/p>\n
\u0130ster bir API yan\u0131t\u0131n\u0131 inceliyor, ister bir yap\u0131land\u0131rma dosyas\u0131n\u0131 d\u00fczenliyor veya bir hata ay\u0131klama s\u00fcrecinde verileri g\u00f6zden ge\u00e7iriyor olun, JSON pretty printing becerisi modern yaz\u0131l\u0131m geli\u015ftirme ara\u00e7 setinizin ayr\u0131lmaz bir par\u00e7as\u0131 olmal\u0131d\u0131r. Bu makalede ele al\u0131nan y\u00f6ntemleri kullanarak, Python projelerinizde JSON verileriyle \u00e7al\u0131\u015f\u0131rken verimlili\u011finizi art\u0131rabilirsiniz.<\/p>\n
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