{"id":15729,"date":"2022-10-12T18:54:42","date_gmt":"2022-10-12T13:24:42","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/"},"modified":"2022-10-12T18:54:42","modified_gmt":"2022-10-12T13:24:42","slug":"solved-replacing-part-of-string-python-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/","title":{"rendered":"[Solved] Replacing part of string python [closed]"},"content":{"rendered":"

[ad_1]
\n<\/p>\n

\n
\n
<\/div>\n
\n
\n

For the simplest case, you might solve this with a regular expression:<\/p>\n

>>> import re\n>>> re.sub(r\"('?null'?)\", \"'Null'\", \"{'abcd': null}\")\n\"{'abcd': 'Null'}\"\n>>> re.sub(r\"('?null'?)\", \"'Null'\", \"{'abcd': 'null'}\")\n\"{'abcd': 'Null'}\"\n>>> \n<\/code><\/pre>\n
but from the look of you example and the comment (which should really be part of your question) mentionning you might have a lot more in the string, I suspect you are dealing with json here. If that’s the case, the proper solution (the only robust solution actually) is to deserialize your string to Python (using json.loads(...)<\/code>), update the resulting Python object (usually a dict, but might be a list of dicts or might contains lists containing dicts etc), then serialize it back with json.dumps()<\/code>.<\/p>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            2<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Replacing part of string python [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] For the simplest case, you might solve this with a regular expression: >>> import re >>> re.sub(r”(‘?null’?)”, “‘Null'”, “{‘abcd’: null}”) “{‘abcd’: ‘Null’}” >>> re.sub(r”(‘?null’?)”, “‘Null'”, “{‘abcd’: ‘null’}”) “{‘abcd’: ‘Null’}” >>> but from the look of you example and the comment (which should really be part of your question) mentionning you might have a lot … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[349,362],"class_list":["post-15729","post","type-post","status-publish","format-standard","hentry","category-solved","tag-python","tag-string"],"yoast_head":"\n[Solved] Replacing part of string python [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Replacing part of string python [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] For the simplest case, you might solve this with a regular expression: >>> import re >>> re.sub(r"('?null'?)", "'Null'", "{'abcd': null}") "{'abcd': 'Null'}" >>> re.sub(r"('?null'?)", "'Null'", "{'abcd': 'null'}") "{'abcd': 'Null'}" >>> but from the look of you example and the comment (which should really be part of your question) mentionning you might have a lot ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-12T13:24:42+00:00\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] Replacing part of string python [closed]\",\"datePublished\":\"2022-10-12T13:24:42+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\"},\"wordCount\":112,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"keywords\":[\"python\",\"string\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\",\"name\":\"[Solved] Replacing part of string python [closed] - JassWeb\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#website\"},\"datePublished\":\"2022-10-12T13:24:42+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/jassweb.com\/solved\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"[Solved] Replacing part of string python [closed]\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/jassweb.com\/solved\/#website\",\"url\":\"https:\/\/jassweb.com\/solved\/\",\"name\":\"JassWeb\",\"description\":\"Build High-quality Websites\",\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/jassweb.com\/solved\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\",\"name\":\"Jass Web\",\"url\":\"https:\/\/jassweb.com\/solved\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png\",\"contentUrl\":\"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png\",\"width\":693,\"height\":132,\"caption\":\"Jass Web\"},\"image\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\",\"name\":\"Kirat\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750\",\"contentUrl\":\"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750\",\"caption\":\"Kirat\"},\"sameAs\":[\"http:\/\/jassweb.com\"],\"url\":\"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"[Solved] Replacing part of string python [closed] - JassWeb","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:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/","og_locale":"en_US","og_type":"article","og_title":"[Solved] Replacing part of string python [closed] - JassWeb","og_description":"[ad_1] For the simplest case, you might solve this with a regular expression: >>> import re >>> re.sub(r\"('?null'?)\", \"'Null'\", \"{'abcd': null}\") \"{'abcd': 'Null'}\" >>> re.sub(r\"('?null'?)\", \"'Null'\", \"{'abcd': 'null'}\") \"{'abcd': 'Null'}\" >>> but from the look of you example and the comment (which should really be part of your question) mentionning you might have a lot ... Read more","og_url":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/","og_site_name":"JassWeb","article_published_time":"2022-10-12T13:24:42+00:00","author":"Kirat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Kirat","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/#article","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/"},"author":{"name":"Kirat","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31"},"headline":"[Solved] Replacing part of string python [closed]","datePublished":"2022-10-12T13:24:42+00:00","mainEntityOfPage":{"@id":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/"},"wordCount":112,"publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"keywords":["python","string"],"articleSection":["Solved"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/","url":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/","name":"[Solved] Replacing part of string python [closed] - JassWeb","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/#website"},"datePublished":"2022-10-12T13:24:42+00:00","breadcrumb":{"@id":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/jassweb.com\/solved\/solved-replacing-part-of-string-python-closed\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/jassweb.com\/solved\/"},{"@type":"ListItem","position":2,"name":"[Solved] Replacing part of string python [closed]"}]},{"@type":"WebSite","@id":"https:\/\/jassweb.com\/solved\/#website","url":"https:\/\/jassweb.com\/solved\/","name":"JassWeb","description":"Build High-quality Websites","publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/jassweb.com\/solved\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/jassweb.com\/solved\/#organization","name":"Jass Web","url":"https:\/\/jassweb.com\/solved\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/","url":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","contentUrl":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","width":693,"height":132,"caption":"Jass Web"},"image":{"@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31","name":"Kirat","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/image\/","url":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750","contentUrl":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750","caption":"Kirat"},"sameAs":["http:\/\/jassweb.com"],"url":"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/"}]}},"_links":{"self":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/15729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/comments?post=15729"}],"version-history":[{"count":0,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/15729\/revisions"}],"wp:attachment":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/media?parent=15729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/categories?post=15729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/tags?post=15729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}