{"id":110949,"date":"2020-05-11T06:35:26","date_gmt":"2020-05-10T22:35:26","guid":{"rendered":"http:\/\/4563.org\/?p=110949"},"modified":"2020-05-11T06:35:26","modified_gmt":"2020-05-10T22:35:26","slug":"%e5%ad%97%e5%85%b8-keys%e8%8e%b7%e5%be%97%e7%9a%84%e9%94%ae%e5%88%97%e8%a1%a8%e5%85%83%e7%b4%a0%e9%a1%ba%e5%ba%8f%e6%98%af%e9%9a%8f%e6%9c%ba%e7%9a%84%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=110949","title":{"rendered":"\u5b57\u5178.keys()\u83b7\u5f97\u7684\u952e\u5217\u8868\u5143\u7d20\u987a\u5e8f\u662f\u968f\u673a\u7684\u5417\uff1f"},"content":{"rendered":"
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\u5b57\u5178.keys()\u83b7\u5f97\u7684\u952e\u5217\u8868\u5143\u7d20\u987a\u5e8f\u662f\u968f\u673a\u7684\u5417\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : oldbird <\/span> <\/i> 57<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

python2,dict \u5bf9\u8c61\u7684 keys()\u65b9\u6cd5\u83b7\u5f97\u7684\u952e\u5217\u8868\u4e2d\u7684\u5143\u7d20\u987a\u5e8f\u662f\u56fa\u5b9a\u7684\u8fd8\u662f\u968f\u673a\u7684\uff1f \u7528\u5c11\u91cf\u6570\u636e\u8bd5\u4e86\u4e0b\uff0c\u770b\u4e0a\u53bb\u597d\u50cf\u662f\u56fa\u5b9a\u4e14\u6709\u89c4\u5f8b\u7684\uff08\u5347\u5e8f\uff1f\uff09 dict.values()\u662f\u6309 keys()\u7ed3\u679c\u7684\u987a\u5e8f\u8f93\u51fa\u7684\uff1f<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (19<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : imn1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    3.5 \u540e\u662f\u4f9d\u6b21\u52a0\u5165\u7684\u987a\u5e8f
    d[‘b’]=1
    d[‘a’]=2
    \u987a\u5e8f\u5c31\u662f b a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : sikariba <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u600e\u4e48\u8bb0\u5f97\u662f 3.7\uff0cPyPy \u4e0d\u8bb0\u5f97\uff0cCPython \u662f 3.6 \u5b9e\u73b0\u7684\uff0c\u7136\u540e\u662f\u5230 3.7 \u624d\u63a8\u5e7f\u5230\u5168\u8bed\u8a00\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lihongjie0209 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Python \u4e0d\u77e5\u9053, \u4f46\u662f\u5728 Java \u4e2d, \u4e3a\u4e86\u907f\u514d\u5ba2\u6237\u4f9d\u8d56\u8fd9\u79cd\u7279\u6027, \u54ea\u6015\u662f\u5185\u90e8\u6709\u5e8f\u7684, \u8fd4\u56de\u7ed9\u4f60\u7684\u65f6\u5019\u90fd\u4f1a\u6253\u4e71.<\/p>\n

    \u65e2\u7136\u4f7f\u7528 hash \u8868, \u5c31\u4e0d\u8981\u518d\u8003\u8651\u987a\u5e8f\u4e86 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : jdhao <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u968f\u673a\u7684\uff0c\u9700\u8981\u987a\u5e8f\uff0c\u7528 ordered dict <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : love <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @lihongjie0209 hash \u987a\u5e8f\u633a\u6709\u7528\uff0c\u53ea\u8981\u5e93\u660e\u786e\u652f\u6301\u5c31\u53ef\u4ee5\u653e\u5fc3\u7528\uff0c\u6bd4\u5982\u6211\u5927 js \u660e\u786e\u53ef\u4ee5\u4f9d\u8d56 key \u987a\u5e8f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : drawstar <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u8bb0\u5f97 python \u4e2d\u597d\u50cf\u662f\u968f\u673a\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : josephpei <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Python 3.7+ https:\/\/docs.python.org\/3.7\/whatsnew\/3.7.html<\/p>\n

    In Python 3.7.0 the insertion-order preservation nature of dict objects has been declared to be an official part of the Python language spec. Therefore, you can depend on it. <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : josephpei <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    go \u4e4b\u524d\u7248\u672c\u662f\u952e\u5217\u8868\u662f\u6709\u5e8f\u7684\uff0c\u540e\u6765\u4e3a\u4e86\u907f\u514d\u5927\u5bb6\u4f9d\u8d56\u8fd9\u4e2a\uff0c\u65b0\u7248\u672c\u6539\u6210\u65e0\u5e8f\u7684\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : hjq98765 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u662f\u968f\u673a\u7684\uff0c\u611f\u89c9\u662f\u6392\u8fc7\u5e8f\u7684\uff1a<\/p>\n

    >>> {1:2,3:4}.keys()
    >>> [1, 3]<\/p>\n

    ——————–<\/p>\n

    >>> {3:2,1:4}.keys()
    >>> [1, 3] <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : tkmiles <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u770b\u7248\u672c, 3.6 \u4e4b\u524d\u662f”\u65e0\u5e8f”\u7684, \u4e5f\u5c31\u662f hash \u987a\u5e8f<\/p>\n

    3.6 \u4e4b\u540e\u5219\u662f\u6309 key \u63d2\u5165\u987a\u5e8f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : axer0912 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    dart \u6709\u4e00\u4e2a\u53eb LinkedHashMap,\u90a3\u662f\u6709\u987a\u5e8f\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : tfdetang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4ece python3.6 \u8d77\u5c31\u662f\u6709\u5e8f\u7684\u4e86\uff0c\u4e4b\u524d\u90fd\u4e0d\u662f\u6709\u5e8f\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : fank99 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u867d\u7136\u6709 order dict\uff0c\u4f46\u5185\u90e8\u662f\u6709\u5e8f\u7684\u3002
    \u5982\u540c\u4e0a\u9762\u8001\u54e5\u6240\u8ff0\uff0c\u5728 3.x \uff08 x \u662f\u51e0\u6211\u7ed9\u5fd8\u4e86\uff09\u540e\u7684\u7248\u672c\u662f\u6709\u5e8f\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : littlewey <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5efa\u8bae\u4f60\u628a\u81ea\u5df1\u7684\u95ee\u9898\u53d8\u6210\u5173\u952e\u8bcd\uff0cGoogle \u4e00\u4e0b\u3002
    python dict keys ordering <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ibreaker <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @littlewey\u3002\u3002\u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : nongmei <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8bb0\u5f97 python \u7684\u5b57\u5178\u662f\u54c8\u5e0c\u5b58\u50a8\uff0c\u6709\u987a\u5e8f\uff0c\u4f46\u4e0d\u662f\u4f60\u63d2\u5165\u7684\u987a\u5e8f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crella <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    ruby2.6.4 \u662f\u6309\u63d2\u5165\u7684\u987a\u5e8f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crella <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    2.5.7 \u4e5f\u662f\u3002\u4e0d\u8fc7\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u9700\u8981 hash \u7684\u952e\u81ea\u52a8\u6392\u5e8f\u7684\u60c5\u51b5\u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : oldbird <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5728 py2.7 \u8bd5\u4e86\u8f93\u51fa\u4efb\u610f\u6b21 keys()\uff0c\u6bcf\u6b21\u8f93\u51fa\u7684\u5217\u8868\u90fd\u662f\u4e00\u6837\u7684\uff0c\u53ef\u80fd\u5e94\u8be5\u8fd9\u6837\u7406\u89e3\uff1akeys()\u7ed3\u679c\u53ea\u6709\u4e00\u79cd\u56fa\u5b9a\u7684\u6392\u5217\u60c5\u51b5\uff0c\u8fd9\u4e2a\u56fa\u5b9a\u7684\u5e8f\u5217\u4e2d\u5143\u7d20\u7684\u987a\u5e8f\u662f\u4efb\u610f\u7684\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u5b57\u5178.keys()\u83b7\u5f97\u7684\u952e\u5217\u8868\u5143\u7d20…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/110949"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=110949"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/110949\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=110949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=110949"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=110949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}