{"id":7210,"date":"2015-03-20T21:14:25","date_gmt":"2015-03-20T13:14:25","guid":{"rendered":"http:\/\/jpuyy.com\/?p=7210"},"modified":"2015-03-20T21:14:25","modified_gmt":"2015-03-20T13:14:25","slug":"python-dict-sort","status":"publish","type":"post","link":"https:\/\/jpuyy.com\/?p=7210","title":{"rendered":"python dict sort"},"content":{"rendered":"

python \u5b57\u5178\uff08dict\uff09\u7684\u7279\u70b9\u5c31\u662f\u65e0\u5e8f\u7684\uff0c\u6309\u7167\u952e\uff08key\uff09\u6765\u63d0\u53d6\u76f8\u5e94\u503c\uff08value\uff09\uff0c\u5982\u679c\u6211\u4eec\u9700\u8981\u5b57\u5178\u6309\u503c\u6392\u5e8f\u7684\u8bdd\uff0c\u90a3\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\uff1a<\/p>\n

1 \u4e0b\u9762\u7684\u662f\u6309\u7167value\u7684\u503c\u4ece\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u6765\u6392\u5e8f\u3002<\/p>\n

dic = {'a':31, 'bc':5, 'c':3, 'asd':4, 'aa':74, 'd':0}\r\ndict= sorted(dic.iteritems(), key=lambda d:d[1], reverse = True)\r\nprint dict<\/pre>\n
\u8f93\u51fa\u7684\u7ed3\u679c\uff1a<\/p>\n
[('aa', 74), ('a', 31), ('bc', 5), ('asd', 4), ('c', 3), ('d', 0)]<\/pre>\n
\u4e0b\u9762\u6211\u4eec\u5206\u89e3\u4e0b\u4ee3\u7801
\nprint dic.iteritems() \u5f97\u5230[(\u952e\uff0c\u503c)]\u7684\u5217\u8868\u3002
\n\u7136\u540e\u7528sorted\u65b9\u6cd5\uff0c\u901a\u8fc7key\u8fd9\u4e2a\u53c2\u6570\uff0c\u6307\u5b9a\u6392\u5e8f\u662f\u6309\u7167value\uff0c\u4e5f\u5c31\u662f\u7b2c\u4e00\u4e2a\u5143\u7d20d[1\u7684\u503c\u6765\u6392\u5e8f\u3002reverse = True\u8868\u793a\u662f\u9700\u8981\u7ffb\u8f6c\u7684\uff0c\u9ed8\u8ba4\u662f\u4ece\u5c0f\u5230\u5927\uff0c\u7ffb\u8f6c\u7684\u8bdd\uff0c\u90a3\u5c31\u662f\u4ece\u5927\u5230\u5c0f\u3002<\/p>\n
2 \u5bf9\u5b57\u5178\u6309\u952e\uff08key\uff09\u6392\u5e8f\uff1a<\/p>\n
dic = {'a':31, 'bc':5, 'c':3, 'asd':4, 'aa':74, 'd':0}<\/pre>\n
dict= sorted(dic.iteritems(), key=lambda d:d[0]) d[0]\u8868\u793a\u5b57\u5178\u7684\u952e
\nprint dict<\/p>\n
http:\/\/www.cnpythoner.com\/post\/266.html<\/p>\n","protected":false},"excerpt":{"rendered":"
python \u5b57\u5178\uff08dict\uff09\u7684\u7279\u70b9\u5c31\u662f\u65e0\u5e8f\u7684\uff0c\u6309\u7167\u952e\uff08key\uff09\u6765\u63d0\u53d6\u76f8\u5e94\u503c\uff08value\uff09\uff0c\u5982\u679c\u6211\u4eec\u9700\u8981\u5b57\u5178\u6309\u503c\u6392\u5e8f\u7684\u8bdd\uff0c\u90a3\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\uff1a 1 \u4e0b\u9762\u7684\u662f\u6309\u7167value\u7684\u503c\u4ece\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u6765\u6392\u5e8f\u3002 dic = {‘a’:31, ‘bc’:5, ‘c’:3, ‘asd’:4, ‘aa’:74, ‘d’:0} dict= sorted(dic.iteritems(), key=lambda d:d[1], reverse = True) print dict \u8f93\u51fa\u7684\u7ed3\u679c\uff1a [(‘aa’, 74), (‘a’, 31), (‘bc’, 5), (‘asd’, 4), (‘c’, 3), (‘d’, 0)] \u4e0b\u9762\u6211\u4eec\u5206\u89e3\u4e0b\u4ee3\u7801 print dic.iteritems() \u5f97\u5230[(\u952e\uff0c\u503c)]\u7684\u5217\u8868\u3002 \u7136\u540e\u7528sorted\u65b9\u6cd5\uff0c\u901a\u8fc7key\u8fd9\u4e2a\u53c2\u6570\uff0c\u6307\u5b9a\u6392\u5e8f\u662f\u6309\u7167value\uff0c\u4e5f\u5c31\u662f\u7b2c\u4e00\u4e2a\u5143\u7d20d[1\u7684\u503c\u6765\u6392\u5e8f\u3002reverse = True\u8868\u793a\u662f\u9700\u8981\u7ffb\u8f6c\u7684\uff0c\u9ed8\u8ba4\u662f\u4ece\u5c0f\u5230\u5927\uff0c\u7ffb\u8f6c\u7684\u8bdd\uff0c\u90a3\u5c31\u662f\u4ece\u5927\u5230\u5c0f\u3002 2 \u5bf9\u5b57\u5178\u6309\u952e\uff08key\uff09\u6392\u5e8f\uff1a dic = {‘a’:31, ‘bc’:5, ‘c’:3, ‘asd’:4, ‘aa’:74, ‘d’:0} dict= sorted(dic.iteritems(), key=lambda d:d[0]) […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-7210","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/7210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7210"}],"version-history":[{"count":2,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/7210\/revisions"}],"predecessor-version":[{"id":7234,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/7210\/revisions\/7234"}],"wp:attachment":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}