{"id":2471,"date":"2017-07-20T10:47:01","date_gmt":"2017-07-20T02:47:01","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=2471"},"modified":"2025-01-08T15:47:00","modified_gmt":"2025-01-08T07:47:00","slug":"python%e8%bf%9b%e9%98%b605-%e5%be%aa%e7%8e%af%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/python\/python%e8%bf%9b%e9%98%b605-%e5%be%aa%e7%8e%af%e8%ae%be%e8%ae%a1\/","title":{"rendered":"Python\u8fdb\u963605 \u5faa\u73af\u8bbe\u8ba1"},"content":{"rendered":"<div id=\"cnblogs_post_body\">\n<h3>range()<\/h3>\n<p>\u5728Python\u4e2d\uff0cfor\u5faa\u73af\u540e\u7684in\u8ddf\u968f\u4e00\u4e2a\u5e8f\u5217\u7684\u8bdd\uff0c\u5faa\u73af\u6bcf\u6b21\u4f7f\u7528\u7684\u5e8f\u5217\u5143\u7d20\uff0c\u800c\u4e0d\u662f\u5e8f\u5217\u7684\u4e0b\u6807\u3002<\/p>\n<p>\u4e4b\u524d\u6211\u4eec\u5df2\u7ecf\u4f7f\u7528\u8fc7range()\u6765\u63a7\u5236for\u5faa\u73af\u3002\u73b0\u5728\uff0c\u6211\u4eec\u7ee7\u7eed\u5f00\u53d1range\u7684\u529f\u80fd\uff0c\u4ee5\u5b9e\u73b0\u4e0b\u6807\u5bf9\u5faa\u73af\u7684\u63a7\u5236\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>S = 'abcdefghijk'\nfor i in range(0,len(S),2):\n    print S[i]<\/pre>\n<\/div>\n<p>\u5728\u8be5\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5229\u7528len()\u51fd\u6570\u548crange()\u51fd\u6570\uff0c\u7528i\u4f5c\u4e3aS\u5e8f\u5217\u7684\u4e0b\u6807\u6765\u63a7\u5236\u5faa\u73af\u3002\u5728range\u51fd\u6570\u4e2d\uff0c\u5206\u522b\u5b9a\u4e49\u4e0a\u9650\uff0c\u4e0b\u9650\u548c\u6bcf\u6b21\u5faa\u73af\u7684\u6b65\u957f\u3002\u8fd9\u5c31\u548cC\u8bed\u8a00\u4e2d\u7684for\u5faa\u73af\u76f8\u7c7b\u4f3c\u4e86\u3002<\/p>\n<h3>enumerate()<\/h3>\n<p>\u5229\u7528enumerate()\u51fd\u6570\uff0c\u53ef\u4ee5\u5728\u6bcf\u6b21\u5faa\u73af\u4e2d\u540c\u65f6\u5f97\u5230\u4e0b\u6807\u548c\u5143\u7d20\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>S = 'abcdefghijk'\nfor (index,char) in enumerate(S):\n    print index\n    print char<\/pre>\n<\/div>\n<p>\u5b9e\u9645\u4e0a\uff0cenumerate()\u5728\u6bcf\u6b21\u5faa\u73af\u4e2d\uff0c\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u5143\u7d20\u7684\u5b9a\u503c\u8868(tuple)\uff0c\u4e24\u4e2a\u5143\u7d20\u5206\u522b\u8d4b\u4e88index\u548cchar<\/p>\n<h3>zip()<\/h3>\n<p>\u5982\u679c\u4f60\u591a\u4e2a\u7b49\u957f\u7684\u5e8f\u5217\uff0c\u7136\u540e\u60f3\u8981\u6bcf\u6b21\u5faa\u73af\u65f6\u4ece\u5404\u4e2a\u5e8f\u5217\u5206\u522b\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u5229\u7528zip()\u65b9\u4fbf\u5730\u5b9e\u73b0\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>ta = [1,2,3]\ntb = [9,8,7]\ntc = ['a','b','c']\nfor (a,b,c) in zip(ta,tb,tc):\n    print(a,b,c)<\/pre>\n<\/div>\n<p>\u6bcf\u6b21\u5faa\u73af\u65f6\uff0c\u4ece\u5404\u4e2a\u5e8f\u5217\u5206\u522b\u4ece\u5de6\u5230\u53f3\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20\uff0c\u5408\u5e76\u6210\u4e00\u4e2atuple\uff0c\u7136\u540etuple\u7684\u5143\u7d20\u8d4b\u4e88\u7ed9a,b,c<\/p>\n<p>zip()\u51fd\u6570\u7684\u529f\u80fd\uff0c\u5c31\u662f\u4ece\u591a\u4e2a\u5217\u8868\u4e2d\uff0c\u4f9d\u6b21\u5404\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20\u3002\u6bcf\u6b21\u53d6\u51fa\u7684(\u6765\u81ea\u4e0d\u540c\u5217\u8868\u7684)\u5143\u7d20\u5408\u6210\u4e00\u4e2a\u5143\u7ec4\uff0c\u5408\u5e76\u6210\u7684\u5143\u7ec4\u653e\u5165zip()\u8fd4\u56de\u7684\u5217\u8868\u4e2d\u3002zip()\u51fd\u6570\u8d77\u5230\u4e86\u805a\u5408\u5217\u8868\u7684\u529f\u80fd\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5206\u89e3\u805a\u5408\u540e\u7684\u5217\u8868\uff0c\u5982\u4e0b:<\/p>\n<div class=\"cnblogs_code\">\n<pre>ta = [1,2,3]\ntb = [9,8,7]\n\n# cluster\nzipped = zip(ta,tb)\nprint(zipped)\n\n# decompose\nna, nb = zip(*zipped)\nprint(na, nb)<\/pre>\n<\/div>\n<h3>\u603b\u7ed3<\/h3>\n<p>range()<\/p>\n<p>enumerate()<\/p>\n<p>zip()<\/p>\n<\/div>\n<p>\u4f5c\u8005\uff1aVamei \u51fa\u5904\uff1ahttps:\/\/www.cnblogs.com\/vamei<\/p>\n","protected":false},"excerpt":{"rendered":"<p>range() \u5728Python\u4e2d\uff0cfor\u5faa\u73af\u540e\u7684in\u8ddf\u968f\u4e00\u4e2a\u5e8f\u5217\u7684\u8bdd\uff0c\u5faa\u73af\u6bcf\u6b21\u4f7f\u7528\u7684\u5e8f\u5217\u5143\u7d20\uff0c\u800c\u4e0d\u662f\u5e8f\u5217\u7684\u4e0b\u6807 &#8230; <a title=\"Python\u8fdb\u963605 \u5faa\u73af\u8bbe\u8ba1\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/jishu\/python\/python%e8%bf%9b%e9%98%b605-%e5%be%aa%e7%8e%af%e8%ae%be%e8%ae%a1\/\" aria-label=\"\u9605\u8bfb Python\u8fdb\u963605 \u5faa\u73af\u8bbe\u8ba1\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[654],"tags":[726],"class_list":["post-2471","post","type-post","status-publish","format-standard","hentry","category-python","tag-python-"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2471","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=2471"}],"version-history":[{"count":2,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2471\/revisions"}],"predecessor-version":[{"id":9175,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2471\/revisions\/9175"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=2471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=2471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=2471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}