{"id":960836,"date":"2024-12-27T03:53:15","date_gmt":"2024-12-26T19:53:15","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/960836.html"},"modified":"2024-12-27T03:53:18","modified_gmt":"2024-12-26T19:53:18","slug":"python%e5%88%97%e8%a1%a8%e5%a6%82%e4%bd%95%e5%8f%8d%e5%90%91%e9%81%8d%e5%8e%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/960836.html","title":{"rendered":"Python\u5217\u8868\u5982\u4f55\u53cd\u5411\u904d\u5386"},"content":{"rendered":"

\"Python\u5217\u8868\u5982\u4f55\u53cd\u5411\u904d\u5386\"<\/p>\n

\u5728Python\u4e2d\u53cd\u5411\u904d\u5386\u5217\u8868\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5207\u7247\u3001reversed()\u51fd\u6570\u3001\u53cd\u5411\u7d22\u5f15\u3001for\u5faa\u73af\u914d\u5408range()\u51fd\u6570\u7b49\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002<\/strong>\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u5e76\u5206\u6790\u5176\u4f18\u7f3a\u70b9\u3002\u6211\u4eec\u5c06\u4ece\u57fa\u7840\u7684\u5207\u7247\u65b9\u6cd5\u5f00\u59cb\uff0c\u9010\u6b65\u6df1\u5165\u5230\u5176\u4ed6\u8f83\u4e3a\u590d\u6742\u7684\u53cd\u5411\u904d\u5386\u6280\u672f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5207\u7247\u65b9\u6cd5<\/p>\n<\/p>\n

\u5207\u7247\u662fPython\u4e2d\u975e\u5e38\u5f3a\u5927\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5bf9\u5217\u8868\u7684\u53cd\u5411\u904d\u5386\u3002\u901a\u8fc7\u5207\u7247\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u539f\u5217\u8868\u7684\u53cd\u5411\u526f\u672c\uff0c\u4ece\u800c\u5b9e\u73b0\u53cd\u5411\u904d\u5386\u3002<\/p>\n<\/p>\n

    \n
  1. \u57fa\u672c\u5207\u7247\u8bed\u6cd5<\/strong><\/li>\n<\/ol>\n

    \u5207\u7247\u8bed\u6cd5\u4e3alist[start:stop:step]<\/code>\uff0c\u5176\u4e2dstep<\/code>\u4e3a-1\u65f6\uff0c\u5373\u53ef\u53cd\u5411\u904d\u5386\u5217\u8868\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

    my_list = [1, 2, 3, 4, 5]<\/p>\n
    reversed_list = my_list[::-1]<\/p>\n
    for item in reversed_list:<\/p>\n
        print(item)<\/p>\n
    <\/code><\/pre>\n<\/p>\n
      \n
    1. \u5207\u7247\u7684\u4f18\u7f3a\u70b9<\/strong><\/li>\n<\/ol>\n
      \u5207\u7247\u65b9\u6cd5\u7b80\u5355\u6613\u61c2\uff0c\u4ee3\u7801\u7b80\u6d01\u3002\u4f46\u9700\u8981\u989d\u5916\u7684\u5185\u5b58\u7a7a\u95f4\u6765\u5b58\u50a8\u53cd\u5411\u5217\u8868\u7684\u526f\u672c\uff0c\u56e0\u6b64\u5728\u5904\u7406\u5927\u578b\u5217\u8868\u65f6\u53ef\u80fd\u4e0d\u591f\u9ad8\u6548\u3002<\/p>\n<\/p>\n
      \u4e8c\u3001reversed()\u51fd\u6570<\/p>\n<\/p>\n
      reversed()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u51fd\u6570\uff0c\u4e13\u95e8\u7528\u4e8e\u53cd\u5411\u904d\u5386\u53ef\u8fed\u4ee3\u5bf9\u8c61\u3002\u5b83\u8fd4\u56de\u4e00\u4e2a\u53cd\u5411\u8fed\u4ee3\u5668\uff0c\u65e0\u9700\u989d\u5916\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u9002\u5408\u5904\u7406\u5927\u578b\u5217\u8868\u3002<\/p>\n<\/p>\n
        \n
      1. \u4f7f\u7528reversed()\u51fd\u6570<\/strong><\/li>\n<\/ol>\n
        \u4e0e\u5207\u7247\u4e0d\u540c\uff0creversed()<\/code>\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u800c\u4e0d\u662f\u5217\u8868\u7684\u526f\u672c\uff1a<\/p>\n<\/p>\n
        my_list = [1, 2, 3, 4, 5]<\/p>\n
        for item in reversed(my_list):<\/p>\n
            print(item)<\/p>\n
        <\/code><\/pre>\n<\/p>\n
          \n
        1. \u4f18\u7f3a\u70b9\u5206\u6790<\/strong><\/li>\n<\/ol>\n
          reversed()<\/code>\u51fd\u6570\u4e0d\u9700\u8981\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u9002\u5408\u5927\u578b\u6570\u636e\u96c6\u3002\u4f46\u4e0e\u5207\u7247\u76f8\u6bd4\uff0c\u8bed\u6cd5\u7a0d\u5fae\u590d\u6742\uff0c\u5c24\u5176\u5728\u9700\u8981\u540c\u65f6\u5bf9\u591a\u4e2a\u5217\u8868\u8fdb\u884c\u53cd\u5411\u904d\u5386\u65f6\u3002<\/p>\n<\/p>\n
          \u4e09\u3001\u53cd\u5411\u7d22\u5f15<\/p>\n<\/p>\n
          \u53cd\u5411\u7d22\u5f15\u662f\u4e00\u79cd\u76f4\u63a5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u5217\u8868\u5143\u7d20\u7684\u65b9\u5f0f\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u8f83\u7e41\u7410\uff0c\u4f46\u53ef\u4ee5\u7cbe\u786e\u63a7\u5236\u904d\u5386\u8fc7\u7a0b\u3002<\/p>\n<\/p>\n
            \n
          1. \u5b9e\u73b0\u53cd\u5411\u7d22\u5f15<\/strong><\/li>\n<\/ol>\n
            \u901a\u8fc7range()\u51fd\u6570\u751f\u6210\u53cd\u5411\u7d22\u5f15\u5217\u8868\uff0c\u7136\u540e\u4f7f\u7528for\u5faa\u73af\u9010\u4e2a\u8bbf\u95ee\u5143\u7d20\uff1a<\/p>\n<\/p>\n
            my_list = [1, 2, 3, 4, 5]<\/p>\n
            for i in range(len(my_list) - 1, -1, -1):<\/p>\n
                print(my_list[i])<\/p>\n
            <\/code><\/pre>\n<\/p>\n
              \n
            1. \u4f18\u7f3a\u70b9\u5206\u6790<\/strong><\/li>\n<\/ol>\n
              \u53cd\u5411\u7d22\u5f15\u63d0\u4f9b\u4e86\u6700\u5927\u9650\u5ea6\u7684\u7075\u6d3b\u6027\u548c\u63a7\u5236\u529b\uff0c\u4f46\u4ee3\u7801\u8f83\u4e3a\u590d\u6742\u4e14\u4e0d\u591f\u76f4\u89c2\uff0c\u9002\u5408\u9700\u8981\u590d\u6742\u6761\u4ef6\u7684\u53cd\u5411\u904d\u5386\u573a\u666f\u3002<\/p>\n<\/p>\n
              \u56db\u3001for\u5faa\u73af\u7ed3\u5408range()\u51fd\u6570<\/p>\n<\/p>\n
              \u4f7f\u7528for\u5faa\u73af\u7ed3\u5408range()\u51fd\u6570\uff0c\u53ef\u4ee5\u5728\u4e0d\u521b\u5efa\u5217\u8868\u526f\u672c\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u53cd\u5411\u904d\u5386\u3002<\/p>\n<\/p>\n
                \n
              1. \u5177\u4f53\u5b9e\u73b0<\/strong><\/li>\n<\/ol>\n
                \u901a\u8fc7range()\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u6307\u5b9a\u6b65\u957f\u4e3a-1\uff1a<\/p>\n<\/p>\n
                my_list = [1, 2, 3, 4, 5]<\/p>\n
                for i in range(len(my_list) - 1, -1, -1):<\/p>\n
                    print(my_list[i])<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                  \n
                1. \u4f18\u7f3a\u70b9\u5206\u6790<\/strong><\/li>\n<\/ol>\n
                  \u8fd9\u79cd\u65b9\u6cd5\u4e0d\u9700\u8981\u989d\u5916\u5b58\u50a8\u7a7a\u95f4\uff0c\u6548\u7387\u8f83\u9ad8\uff0c\u4f46\u4ee3\u7801\u8f83\u4e3a\u5197\u957f\uff0c\u4e0d\u5982\u5207\u7247\u548creversed()\u7b80\u6d01\u3002<\/p>\n<\/p>\n
                  \u4e94\u3001\u5217\u8868\u7684reverse()\u65b9\u6cd5<\/p>\n<\/p>\n
                  list.reverse()<\/code>\u662f\u4e00\u4e2a\u5c31\u5730\u53cd\u8f6c\u5217\u8868\u7684\u65b9\u6cd5\uff0c\u76f4\u63a5\u4fee\u6539\u539f\u5217\u8868\uff0c\u65e0\u9700\u521b\u5efa\u526f\u672c\u3002<\/p>\n<\/p>\n
                    \n
                  1. \u4f7f\u7528reverse()\u65b9\u6cd5<\/strong><\/li>\n<\/ol>\n
                    \u76f4\u63a5\u8c03\u7528\u5217\u8868\u5bf9\u8c61\u7684reverse()\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
                    my_list = [1, 2, 3, 4, 5]<\/p>\n
                    my_list.reverse()<\/p>\n
                    for item in my_list:<\/p>\n
                        print(item)<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                      \n
                    1. \u4f18\u7f3a\u70b9\u5206\u6790<\/strong><\/li>\n<\/ol>\n
                      \u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u4f46\u4f1a\u4fee\u6539\u539f\u5217\u8868\uff0c\u5982\u679c\u9700\u8981\u4fdd\u7559\u539f\u5217\u8868\u987a\u5e8f\uff0c\u5219\u4e0d\u9002\u7528\u3002<\/p>\n<\/p>\n
                      \u516d\u3001\u603b\u7ed3<\/p>\n<\/p>\n
                      \u53cd\u5411\u904d\u5386\u5217\u8868\u5728Python\u4e2d\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u573a\u666f\u548c\u4f18\u7f3a\u70b9\u3002\u5bf9\u4e8e\u5c0f\u578b\u5217\u8868\uff0c\u5207\u7247\u65b9\u6cd5\u56e0\u5176\u7b80\u5355\u6613\u7528\u800c\u5e38\u88ab\u91c7\u7528\uff1b\u5bf9\u4e8e\u5927\u578b\u5217\u8868\uff0creversed()\u51fd\u6570\u662f\u66f4\u4e3a\u9ad8\u6548\u7684\u9009\u62e9\uff1b\u800c\u53cd\u5411\u7d22\u5f15\u548cfor\u5faa\u73af\u7ed3\u5408range()\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u7075\u6d3b\u6027\u548c\u63a7\u5236\u529b\uff0c\u9002\u5408\u7279\u6b8a\u9700\u6c42\u7684\u573a\u5408\u3002<\/strong>\u9009\u62e9\u9002\u5408\u7684\u53cd\u5411\u904d\u5386\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6027\u80fd\u3002<\/p>\n<\/p>\n
                      \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                       \u5982\u4f55\u4f7f\u7528Python\u7684\u5207\u7247\u529f\u80fd\u53cd\u5411\u904d\u5386\u5217\u8868\uff1f<\/strong>
                      \u53ef\u4ee5\u901a\u8fc7\u5207\u7247\u529f\u80fd\u5feb\u901f\u5b9e\u73b0\u5217\u8868\u7684\u53cd\u5411\u904d\u5386\u3002\u4f7f\u7528\u8bed\u6cd5 list[::-1]<\/code> \u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u53cd\u5411\u7684\u65b0\u5217\u8868\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u5217\u8868 my_list = [1, 2, 3, 4]<\/code>\uff0c\u4f7f\u7528 my_list[::-1]<\/code> \u5c06\u8fd4\u56de [4, 3, 2, 1]<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u7b80\u5355\u6613\u61c2\uff0c\u8fd8\u80fd\u4fdd\u6301\u539f\u5217\u8868\u4e0d\u53d8\u3002<\/p>\n
                      \u5728Python\u4e2d\uff0c\u5982\u4f55\u4f7f\u7528\u5faa\u73af\u53cd\u5411\u904d\u5386\u5217\u8868\uff1f<\/strong>
                      \u53ef\u4ee5\u4f7f\u7528for<\/code>\u5faa\u73af\u7ed3\u5408range<\/code>\u51fd\u6570\u6765\u5b9e\u73b0\u53cd\u5411\u904d\u5386\u3002\u901a\u8fc7 range(len(my_list)-1, -1, -1)<\/code> \u53ef\u4ee5\u83b7\u5f97\u4ece\u5217\u8868\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u5230\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u8fd9\u6837\u53ef\u4ee5\u6309\u7167\u7d22\u5f15\u8bbf\u95ee\u5217\u8868\u5143\u7d20\u3002\u4f8b\u5982\uff1a  <\/p>\n
                      my_list = [1, 2, 3, 4]\nfor i in range(len(my_list)-1, -1, -1):\n    print(my_list[i])\n<\/code><\/pre>\n
                      \u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u7075\u6d3b\uff0c\u9002\u5408\u9700\u8981\u540c\u65f6\u64cd\u4f5c\u7d22\u5f15\u548c\u5143\u7d20\u7684\u573a\u666f\u3002<\/p>\n
                      \u4f7f\u7528Python\u7684reversed()<\/code>\u51fd\u6570\u53ef\u4ee5\u600e\u6837\u53cd\u5411\u904d\u5386\u5217\u8868\uff1f<\/strong>
                      reversed()<\/code>\u51fd\u6570\u662f\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\uff0c\u4e13\u95e8\u7528\u4e8e\u53cd\u5411\u904d\u5386\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c\u5305\u62ec\u5217\u8868\u3002\u4f7f\u7528\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06\u5217\u8868\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165\u5373\u53ef\u3002\u4f8b\u5982\uff1a  <\/p>\n
                      my_list = [1, 2, 3, 4]\nfor item in reversed(my_list):\n    print(item)\n<\/code><\/pre>\n
                      \u8fd9\u79cd\u65b9\u5f0f\u5728\u53ef\u8bfb\u6027\u548c\u7b80\u6d01\u6027\u4e0a\u90fd\u8868\u73b0\u4f18\u79c0\uff0c\u9002\u5408\u4efb\u4f55\u9700\u8981\u53cd\u5411\u904d\u5386\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u53cd\u5411\u904d\u5386\u5217\u8868\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5207\u7247\u3001reversed()\u51fd\u6570\u3001\u53cd\u5411\u7d22\u5f15\u3001for\u5faa\u73af\u914d\u5408range() […]","protected":false},"author":3,"featured_media":960841,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/960836"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=960836"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/960836\/revisions"}],"predecessor-version":[{"id":960843,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/960836\/revisions\/960843"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/960841"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=960836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=960836"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=960836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}