{"id":455,"date":"2023-02-05T22:01:31","date_gmt":"2023-02-05T14:01:31","guid":{"rendered":"http:\/\/blog.yuekegu.com\/?p=455"},"modified":"2023-02-05T22:01:31","modified_gmt":"2023-02-05T14:01:31","slug":"django%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%9akeyerror","status":"publish","type":"post","link":"https:\/\/book.yuekegu.com\/index.php\/2023\/02\/05\/django%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%9akeyerror\/","title":{"rendered":"Django\u5b66\u4e60\u7b14\u8bb0\uff1aKeyError"},"content":{"rendered":"\n<p>\u5904\u7406Python\u5173\u4e8eDict\u7684\u9519\u8befKeyError\u7684\u529e\u6cd5\u633a\u591a\uff0c\u4e0d\u8fc7\u5c31\u8bb0\u4e0b\u4e862\u4e2a\uff1a<\/p>\n\n\n\n<p>\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528setdefault()\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u5982<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">data.setdefault('error', 0)<\/pre>\n\n\n\n<p>\u65b9\u6cd5\u4e8c\uff1a\u5bfc\u5165collections\uff0c\u4f7f\u7528defaultdict\u65b9\u6cd5<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">data = collections.defaultdict(list, data)<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5904\u7406Python\u5173\u4e8eDict\u7684\u9519\u8befKeyError\u7684\u529e\u6cd5\u633a\u591a\uff0c\u4e0d\u8fc7\u5c31\u8bb0\u4e0b\u4e862\u4e2a\uff1a \u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528setdefault()\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u5982 data.setdefault(&#8216;error&#8217;, 0) \u65b9\u6cd5\u4e8c\uff1a\u5bfc\u5165collections\uff0c\u4f7f\u7528defaultdict\u65b9\u6cd5 data = collections.defaultdict(list, data)<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-455","post","type-post","status-publish","format-standard","hentry","category-django"],"_links":{"self":[{"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/posts\/455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/comments?post=455"}],"version-history":[{"count":0,"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/posts\/455\/revisions"}],"wp:attachment":[{"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/media?parent=455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/categories?post=455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/book.yuekegu.com\/index.php\/wp-json\/wp\/v2\/tags?post=455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}