{"id":180563,"date":"2022-04-19T17:49:31","date_gmt":"2022-04-19T09:49:31","guid":{"rendered":"http:\/\/www.idc.net\/help\/180563\/"},"modified":"2022-04-19T17:49:31","modified_gmt":"2022-04-19T09:49:31","slug":"%e5%90%8e%e6%b5%aa%e4%ba%91python%e6%95%99%e7%a8%8b%ef%bc%9apython%e5%ad%97%e5%85%b8%e5%88%a4%e6%96%adkey%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/180563\/","title":{"rendered":"\u540e\u6d6a\u4e91Python\u6559\u7a0b\uff1apython\u5b57\u5178\u5224\u65adkey\u662f\u5426\u5b58\u5728"},"content":{"rendered":"

<\/p>\n

\u5b57\u5178\u662f\u53e6\u4e00\u79cd\u53ef\u53d8\u5bb9\u5668\u6a21\u578b\uff0c\u4e14\u53ef\u5b58\u50a8\u4efb\u610f\u7c7b\u578b\u5bf9\u8c61\u3002<\/p>\n

\u5b57\u5178\u7684\u6bcf\u4e2a\u952e\u503c(key=>value)\u5bf9\u7528\u5192\u53f7(:)\u5206\u5272\uff0c\u6bcf\u4e2a\u5bf9\u4e4b\u95f4\u7528\u9017\u53f7(,)\u5206\u5272\uff0c\u6574\u4e2a\u5b57\u5178\u5305\u62ec\u5728\u82b1\u62ec\u53f7({})\u4e2d ,\u683c\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

d = {key1 : value1, key2 : value2 }<\/pre>\n
\u952e\u5fc5\u987b\u662f\u552f\u4e00\u7684\uff0c\u4f46\u503c\u5219\u4e0d\u5fc5\u3002<\/p>\n
\u503c\u53ef\u4ee5\u53d6\u4efb\u4f55\u6570\u636e\u7c7b\u578b\uff0c\u4f46\u952e\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u5982\u5b57\u7b26\u4e32\uff0c\u6570\u5b57\u6216\u5143\u7ec4\u3002<\/p>\n
\u4e00\u4e2a\u7b80\u5355\u7684\u5b57\u5178\u5b9e\u4f8b\uff1a<\/p>\n
dict = {'Alice': '2341', 'Beth': '9102', 'Cecil': '3258'}<\/pre>\n
Python\u5b66\u4e60\u7f51- \u4e13\u4e1a\u7684python\u81ea\u5b66\u3001\u4ea4\u6d41\u516c\u76ca\u5e73\u53f0\uff01<\/p>\n
\u5728python\u4e2d\uff0c\u5224\u65ad\u67d0\u4e2akey\u662f\u5426\u5728\u5b57\u5178\u4e2d\uff0c\u4e00\u822c\u6709\u4e24\u79cd\u901a\u7528\u505a\u6cd5:<\/p>\n
1.\u4f7f\u7528\u81ea\u5e26\u51fd\u6570\u5b9e\u73b0:<\/p>\n
\u5728python\u7684\u5b57\u5178\u7684\u5c5e\u6027\u65b9\u6cd5\u91cc\u9762\u6709\u4e00\u4e2ahas_key()\u65b9\u6cd5:<\/p>\n
#\u751f\u6210\u4e00\u4e2a\u5b57\u5178  \nd = {'name':Tom, 'age':10, 'Tel':110}  \n#\u6253\u5370\u8fd4\u56de\u503c  \nprint d.has_key('name')  \n#\u7ed3\u679c\u8fd4\u56deTrue<\/pre>\n
2.\u4f7f\u7528in\u65b9\u6cd5:<\/p>\n
#\u751f\u6210\u4e00\u4e2a\u5b57\u5178  \nd = {'name':Tom, 'age':10, 'Tel':110}  \n#\u6253\u5370\u8fd4\u56de\u503c\uff0c\u5176\u4e2dd.keys()\u662f\u5217\u51fa\u5b57\u5178\u6240\u6709\u7684key  \nprint \u2018name\u2019 in d.keys()  \nprint 'name' in d  \n#\u4e24\u4e2a\u7684\u7ed3\u679c\u90fd\u662f\u8fd4\u56deTrue<\/pre>\n
\u9664\u4e86\u4f7f\u7528in\u8fd8\u53ef\u4ee5\u4f7f\u7528not in\uff0c\u5224\u5b9a\u8fd9\u4e2akey\u4e0d\u5b58\u5728\uff0c\u4f7f\u7528in\u8981\u6bd4has_key\u8981\u5feb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b57\u5178\u662f\u53e6\u4e00\u79cd\u53ef\u53d8\u5bb9\u5668\u6a21\u578b\uff0c\u4e14\u53ef\u5b58\u50a8\u4efb\u610f\u7c7b\u578b\u5bf9\u8c61\u3002 \u5b57\u5178\u7684\u6bcf\u4e2a\u952e\u503c(key=>value)\u5bf9\u7528\u5192\u53f7(:)\u5206 […]<\/p>\n","protected":false},"author":1,"featured_media":180564,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[182397],"tags":[],"class_list":["post-180563","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/180563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=180563"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/180563\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/180564"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=180563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=180563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=180563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}