{"id":97667,"date":"2026-08-29T23:40:55","date_gmt":"2026-08-29T15:40:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/97667.html"},"modified":"2026-08-29T23:40:55","modified_gmt":"2026-08-29T15:40:55","slug":"%e7%ac%ac6%e7%af%87_python%e9%ab%98%e7%ba%a7%e8%af%ad%e6%b3%95%e4%b8%8e%e6%a0%87%e5%87%86%e5%ba%93%e7%b2%be%e9%ab%93%ef%bc%9a%e4%bb%8e%e4%bc%9a%e7%94%a8%e5%88%b0%e8%be%be%e7%b2%be%e9%80%9a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/97667.html","title":{"rendered":"\u7b2c6\u7bc7_Python\u9ad8\u7ea7\u8bed\u6cd5\u4e0e\u6807\u51c6\u5e93\u7cbe\u9ad3\uff1a\u4ece\u4f1a\u7528\u5230\u8fbe\u7cbe\u901a"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<p>\u5728\u524d\u4e94\u7bc7\u535a\u5ba2\u4e2d&#xff0c;\u6211\u4eec\u4ece\u96f6\u5f00\u59cb&#xff0c;\u5efa\u7acb\u4e86\u4e00\u5957\u5b8c\u6574\u7684 Python \u7f16\u7a0b\u77e5\u8bc6\u4f53\u7cfb&#xff1a;<\/p>\n<ul>\n<li>\u7b2c1\u7bc7&#xff1a;\u642d\u5efa\u73af\u5883&#xff0c;\u5199\u4e0b\u7b2c\u4e00\u884c\u4ee3\u7801&#xff0c;\u7406\u89e3\u53d8\u91cf\u4e0e\u57fa\u7840\u8bed\u6cd5<\/li>\n<li>\u7b2c2\u7bc7&#xff1a;\u638c\u63e1\u6570\u636e\u7c7b\u578b\u4e0e\u8fd0\u7b97\u7b26&#xff0c;\u5efa\u7acb \u201c\u6570\u636e\u201d \u7684\u8ba4\u77e5<\/li>\n<li>\u7b2c3\u7bc7&#xff1a;\u638c\u63e1\u6761\u4ef6\u8bed\u53e5\u3001\u5faa\u73af\u3001\u51fd\u6570&#xff0c;\u5efa\u7acb&#034;\u903b\u8f91&#034;\u7684\u8ba4\u77e5<\/li>\n<li>\u7b2c4\u7bc7&#xff1a;\u6df1\u5165\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b&#xff0c;\u5efa\u7acb&#034;\u7ed3\u6784&#034;\u7684\u8ba4\u77e5<\/li>\n<li>\u7b2c5\u7bc7&#xff1a;\u6587\u4ef6\u64cd\u4f5c\u4e0e\u5f02\u5e38\u5904\u7406&#xff0c;\u638c\u63e1\u7a0b\u5e8f\u4e0e\u5916\u754c\u4ea4\u4e92\u7684\u80fd\u529b<\/li>\n<\/ul>\n<p>\u672c\u7bc7\u662f\u8fdb\u9636\u7bc7&#xff0c;\u6211\u4eec\u5c06\u6df1\u5165 Python \u771f\u6b63\u7cbe\u534e\u7684\u90e8\u5206 \u2014\u2014 \u90a3\u4e9b\u8ba9\u4ee3\u7801\u53d8\u5f97\u66f4\u7b80\u6d01\u3001\u66f4\u9ad8\u6548\u3001\u66f4\u5f3a\u5927\u7684\u8bed\u6cd5\u548c\u5de5\u5177\u3002\u5b66\u5b8c\u672c\u7bc7&#xff0c;\u4f60\u5c06\u4ece \u201c\u4f1a\u5199 Python\u201d \u8fc8\u5411 \u201c\u7cbe\u901a Python\u201d\u3002<\/p>\n<p>\u672c\u7bc7\u6db5\u76d6\u516d\u5927\u4e3b\u9898&#xff1a;<\/p>\n<li>\u5217\u8868\u63a8\u5bfc\u5f0f\u4e0e\u5b57\u5178\u63a8\u5bfc\u5f0f&#xff1a;\u4e00\u884c\u4ee3\u7801\u751f\u6210\u590d\u6742\u6570\u636e\u7ed3\u6784<\/li>\n<li>\u751f\u6210\u5668\u4e0e\u8fed\u4ee3\u5668&#xff1a;\u4f18\u96c5\u5904\u7406\u6d77\u91cf\u6570\u636e&#xff0c;\u5185\u5b58\u96f6\u538b\u529b<\/li>\n<li>\u88c5\u9970\u5668&#xff1a;\u4e0d\u4fee\u6539\u539f\u51fd\u6570&#xff0c;\u7ed9\u5b83\u6dfb\u52a0\u65b0\u529f\u80fd&#xff08;AOP \u601d\u60f3&#xff09;<\/li>\n<li>\u95ed\u5305&#xff1a;\u51fd\u6570\u80cc\u540e\u7684&#034;\u8bb0\u5fc6&#034;\u80fd\u529b<\/li>\n<li>\u6b63\u5219\u8868\u8fbe\u5f0f&#xff1a;\u7528 pattern \u7cbe\u51c6\u5339\u914d\u4e00\u5207\u6587\u5b57<\/li>\n<li>\u9ad8\u9636\u6807\u51c6\u5e93&#xff1a;collections\u3001itertools\u3001functools \u9ad8\u7ea7\u7528\u6cd5<\/li>\n<p>\u51c6\u5907\u597d\u4e86\u5417&#xff1f;\u8ba9\u6211\u4eec\u5f00\u59cb&#xff01;&#x1f680;<\/p>\n<h2>\u4e00\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u4e0e\u5b57\u5178\u63a8\u5bfc\u5f0f&#xff1a;\u4e00\u884c\u4ee3\u7801\u7684\u5a01\u529b<\/h2>\n<h3>1.1\u3001\u4ece\u4e00\u4e2a\u95ee\u9898\u5f00\u59cb<\/h3>\n<p>\u5047\u8bbe\u4f60\u6709\u4e00\u4e2a\u5217\u8868&#xff0c;\u91cc\u9762\u5b58\u653e\u4e86 10 \u4e2a\u5b66\u751f\u7684\u5206\u6570&#xff1a;<\/p>\n<p>scores <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">85<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">78<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">92<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">88<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">76<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">95<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">89<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">83<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">91<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u73b0\u5728\u4f60\u9700\u8981\u628a\u6bcf\u4e2a\u5206\u6570\u90fd\u52a0\u4e0a 5 \u5206&#xff08;\u5982\u679c\u6709\u8d85\u8fc7 100 \u5206\u7684&#xff0c;\u6309 100 \u8ba1&#xff09;&#xff0c;\u7136\u540e\u6311\u51fa\u6240\u6709\u5927\u4e8e\u7b49\u4e8e 90 \u5206\u7684\u5206\u6570\u3002<\/p>\n<p>\u4f20\u7edf\u5199\u6cd5&#xff08;\u8fc7\u7a0b\u5f0f&#xff09;&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u7b2c1\u6b65&#xff1a;\u7ed9\u6bcf\u4e2a\u5206\u6570\u52a05&#xff0c;\u4f46\u4e0d\u8d85\u8fc7100<\/span><br \/>\nadjusted <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">for<\/span> score <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">:<\/span><br \/>\n    new_score <span class=\"token operator\">&#061;<\/span> score <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">5<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> new_score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        new_score <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><br \/>\n    adjusted<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>new_score<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># \u7b2c2\u6b65&#xff1a;\u6311\u51fa &gt;&#061; 90 \u7684\u5206\u6570<\/span><br \/>\npassed <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">for<\/span> score <span class=\"token keyword\">in<\/span> adjusted<span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> score <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        passed<span class=\"token punctuation\">.<\/span>append<span class=\"token punctuation\">(<\/span>score<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>passed<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># [95, 97, 100, 94]<\/span><\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u903b\u8f91\u6e05\u6670&#xff0c;\u4f46\u6709\u4e24\u4e2a\u95ee\u9898&#xff1a;<\/p>\n<li>\u4ee3\u7801\u5197\u957f&#xff1a;\u603b\u5171 8 \u884c&#xff0c;\u800c\u5b9e\u9645\u903b\u8f91\u53ea\u6709\u4e24\u53e5\u8bdd<\/li>\n<li>\u53d8\u91cf\u540d\u6cdb\u6ee5&#xff1a;adjusted\u3001new_score\u3001passed\u2026\u2026\u4e34\u65f6\u53d8\u91cf\u8d8a\u9020\u8d8a\u591a<\/li>\n<p>\u5217\u8868\u63a8\u5bfc\u5f0f\u5199\u6cd5&#xff1a;<\/p>\n<p>scores <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">85<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">78<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">92<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">88<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">76<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">95<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">89<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">83<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">91<\/span><span class=\"token punctuation\">]<\/span><br \/>\npassed <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token builtin\">min<\/span><span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">for<\/span> score <span class=\"token keyword\">in<\/span> scores <span class=\"token keyword\">if<\/span> score <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">5<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>passed<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># [95, 97, 100, 94]<\/span><\/p>\n<p>\u4e00\u884c\u641e\u5b9a\u3002\u8fd9\u884c\u4ee3\u7801\u7684\u542b\u4e49&#xff1a;<\/p>\n<p>for score in scores \u2192 \u904d\u5386\u539f\u59cb\u5217\u8868<br \/>\nif score &#043; 5 &gt;&#061; 90 \u2192 \u8fc7\u6ee4\u6761\u4ef6<br \/>\nmin(score &#043; 5, 100) \u2192 \u8f6c\u6362\u903b\u8f91&#xff08;\u52a05&#xff0c;\u4e0d\u8d85\u8fc7100&#xff09;<\/p>\n<h3>1.2\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u7684\u57fa\u672c\u8bed\u6cd5<\/h3>\n<p>\u5217\u8868\u63a8\u5bfc\u5f0f&#xff08;List Comprehension&#xff09;\u662f Python \u63d0\u4f9b\u7684\u4e00\u79cd\u7d27\u51d1\u7684\u5217\u8868\u521b\u5efa\u8bed\u6cd5\u3002<\/p>\n<p>\u57fa\u672c\u683c\u5f0f&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u8bed\u6cd5&#xff1a;[\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u53ef\u8fed\u4ee3\u5bf9\u8c61]<\/span><br \/>\n<span class=\"token comment\"># \u4f8b&#xff1a;\u628a 0~9 \u7684\u6bcf\u4e2a\u6570\u5e73\u65b9&#xff0c;\u751f\u6210\u65b0\u5217\u8868<\/span><br \/>\nsquares <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>x <span class=\"token operator\">**<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>squares<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]<\/span><\/p>\n<p>\u5e26\u6761\u4ef6\u8fc7\u6ee4&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u8bed\u6cd5&#xff1a;[\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u53ef\u8fed\u4ee3\u5bf9\u8c61 if \u6761\u4ef6]<\/span><br \/>\n<span class=\"token comment\"># \u4f8b&#xff1a;\u6311\u51fa\u5076\u6570\u7684\u5e73\u65b9<\/span><br \/>\neven_squares <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>x <span class=\"token operator\">**<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">%<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>even_squares<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># [0, 4, 16, 36, 64]<\/span><\/p>\n<p>\u9010\u884c\u89e3\u6790&#xff1a;<\/p>\n<table>\n<tr>\u7ec4\u6210\u90e8\u5206\u542b\u4e49<\/tr>\n<tbody>\n<tr>\n<td>[x ** 2 for x in range(10)]<\/td>\n<td>\u5916\u5c42\u65b9\u62ec\u53f7\u8868\u793a \u201c\u751f\u6210\u4e00\u4e2a\u65b0\u5217\u8868\u201d<\/td>\n<\/tr>\n<tr>\n<td>x ** 2<\/td>\n<td>\u5217\u8868\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u751f\u6210\u65b9\u5f0f&#xff08;\u8868\u8fbe\u5f0f&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>for x in range(10)<\/td>\n<td>\u904d\u5386 range(10)&#xff0c;\u6bcf\u6b21\u628a\u5f53\u524d\u5143\u7d20\u7ed1\u5b9a\u5230 x<\/td>\n<\/tr>\n<tr>\n<td>if x % 2 &#061;&#061; 0<\/td>\n<td>\u53ef\u9009&#xff1a;\u53ea\u5904\u7406\u6ee1\u8db3\u6761\u4ef6\u7684\u5143\u7d20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1.3\u3001\u591a\u4e2a\u6761\u4ef6\u7684\u7ec4\u5408<\/h3>\n<p><span class=\"token comment\"># \u591a\u4e2a if \u6761\u4ef6&#xff1a;\u76f8\u5f53\u4e8e and<\/span><br \/>\nresult <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>x <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">%<\/span> <span class=\"token number\">3<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">%<\/span> <span class=\"token number\">5<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token comment\"># \u540c\u65f6\u80fd\u88ab3\u548c5\u6574\u9664&#xff08;\u5c31\u662f\u80fd\u88ab15\u6574\u9664&#xff09;\u7684\u6570: [0, 15, 30, 45, 60, 75, 90]<\/span><\/p>\n<p><span class=\"token comment\"># if&#8230;else \u5728\u8868\u8fbe\u5f0f\u91cc&#xff1a;\u4e09\u5143\u8868\u8fbe\u5f0f<\/span><br \/>\n<span class=\"token comment\"># \u8bed\u6cd5&#xff1a; [expr_if_true if condition else expr_if_false for &#8230;]<\/span><br \/>\nlabeled <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;\u5076\u6570&#039;<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">%<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#039;\u5947\u6570&#039;<\/span> <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>labeled<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># [&#039;\u5076\u6570&#039;, &#039;\u5947\u6570&#039;, &#039;\u5076\u6570&#039;, &#039;\u5947\u6570&#039;, &#039;\u5076\u6570&#039;]<\/span><\/p>\n<p>\u6ce8\u610f\u533a\u5206&#xff1a;if condition&#xff08;\u8fc7\u6ee4&#xff09;\u548c if&#8230;else&#8230;&#xff08;\u4e09\u5143&#xff09;\u7684\u4f4d\u7f6e\u4e0d\u540c&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u274c \u9519\u8bef\u5199\u6cd5&#xff1a;if \u5728\u8868\u8fbe\u5f0f\u540e\u9762\u4f1a\u53d8\u6210\u4e09\u5143\u8868\u8fbe\u5f0f&#xff0c;\u4e0d\u4f1a\u8fc7\u6ee4<\/span><br \/>\nresult <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>x <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">5<\/span> <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span>  <span class=\"token comment\"># SyntaxError!<\/span><\/p>\n<p><span class=\"token comment\"># \u2705 \u6b63\u786e\u5199\u6cd5&#xff1a;\u8fc7\u6ee4\u7528 if \u5728 for \u540e\u9762&#xff0c;\u4e09\u5143\u7528 if \u5728\u8868\u8fbe\u5f0f\u91cc<\/span><br \/>\nresult <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>x <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span>           <span class=\"token comment\"># \u8fc7\u6ee4<\/span><br \/>\nresult <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>x <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">if<\/span> x <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">5<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token number\">0<\/span> <span class=\"token keyword\">for<\/span> x <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span>   <span class=\"token comment\"># \u4e09\u5143<\/span><\/p>\n<h3>1.4\u3001\u53cc\u91cd\u5faa\u73af\u4e0e\u4e8c\u7ef4\u5217\u8868<\/h3>\n<p>\u5217\u8868\u63a8\u5bfc\u5f0f\u8fd8\u652f\u6301\u53cc\u91cd\u5faa\u73af&#xff0c;\u53ef\u4ee5\u7528\u4e8e\u5c55\u5e73\u4e8c\u7ef4\u5217\u8868&#xff08;\u77e9\u9635&#xff09;&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u628a 3&#215;3 \u77e9\u9635\u5c55\u5e73\u4e3a\u4e00\u7ef4\u5217\u8868<\/span><br \/>\nmatrix <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p><span class=\"token comment\"># \u8bed\u6cd5&#xff1a;for \u5916\u5c42 in &#8230; for \u5185\u5c42 in &#8230;<\/span><br \/>\nflattened <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>item <span class=\"token keyword\">for<\/span> row <span class=\"token keyword\">in<\/span> matrix <span class=\"token keyword\">for<\/span> item <span class=\"token keyword\">in<\/span> row<span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>flattened<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># [1, 2, 3, 4, 5, 6, 7, 8, 9]<\/span><\/p>\n<p>\u9010\u884c\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>for row in matrix&#xff1a;\u5916\u5c42\u5faa\u73af\u904d\u5386\u6bcf\u4e00\u884c<\/li>\n<li>for item in row&#xff1a;\u5185\u5c42\u5faa\u73af\u904d\u5386\u884c\u91cc\u7684\u6bcf\u4e2a\u5143\u7d20<\/li>\n<li>item&#xff1a;\u76f4\u63a5\u8f93\u51fa\u6bcf\u4e2a\u6570\u5b57&#xff08;\u4e0d\u662f\u884c&#xff09;<\/li>\n<\/ul>\n<h3>1.5\u3001\u5b57\u5178\u63a8\u5bfc\u5f0f<\/h3>\n<p>\u5b57\u5178\u63a8\u5bfc\u5f0f&#xff08;Dict Comprehension&#xff09;\u7684\u8bed\u6cd5\u4e0e\u5217\u8868\u63a8\u5bfc\u5f0f\u7c7b\u4f3c&#xff0c;\u53ea\u662f\u7528\u82b1\u62ec\u53f7 {}&#xff0c;\u5e76\u4e14\u6bcf\u4e2a\u5143\u7d20\u662f\u4e00\u4e2a key: value \u5bf9&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u628a\u4e00\u4e2a\u5217\u8868\u7684\u6bcf\u4e2a\u5143\u7d20\u4f5c\u4e3a key&#xff0c;\u5143\u7d20\u957f\u5ea6\u4f5c\u4e3a value<\/span><br \/>\nwords <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;apple&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;banana&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;cherry&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;date&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\nword_lengths <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span>word<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>word<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">for<\/span> word <span class=\"token keyword\">in<\/span> words<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>word_lengths<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\"># {&#039;apple&#039;: 5, &#039;banana&#039;: 6, &#039;cherry&#039;: 6, &#039;date&#039;: 4}<\/span><\/p>\n<p>\u5b9e\u6218&#xff1a;\u7edf\u8ba1\u5b57\u7b26\u4e32\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570&#xff1a;<\/p>\n<p>text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;hello python&#034;<\/span><br \/>\nchar_count <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span>ch<span class=\"token punctuation\">:<\/span> text<span class=\"token punctuation\">.<\/span>count<span class=\"token punctuation\">(<\/span>ch<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">for<\/span> ch <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">set<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>char_count<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\"># {&#039;h&#039;: 2, &#039;e&#039;: 1, &#039;l&#039;: 3, &#039;o&#039;: 2, &#039; &#039;: 1, &#039;p&#039;: 1, &#039;y&#039;: 1, &#039;t&#039;: 1, &#039;n&#039;: 1}<\/span><\/p>\n<p>&#x1f4a1; \u6027\u80fd\u63d0\u793a&#xff1a;\u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u4e2d&#xff0c;set(text) \u53bb\u6389\u4e86\u91cd\u590d\u5b57\u7b26&#xff0c;\u8fd9\u6837 text.count(ch) \u5c31\u4e0d\u7528\u91cd\u590d\u7edf\u8ba1\u76f8\u540c\u7684\u5b57\u7b26\u3002\u5982\u679c\u76f4\u63a5 for ch in text \u5e76\u7528 char_count[ch] &#043;&#061; 1 \u7edf\u8ba1&#xff0c;\u903b\u8f91\u76f8\u540c\u4f46\u5b57\u5178\u63a8\u5bfc\u5f0f\u7684\u5199\u6cd5\u66f4\u7b80\u6d01\u3002<\/p>\n<h3>1.6\u3001\u96c6\u5408\u63a8\u5bfc\u5f0f<\/h3>\n<p>\u7c7b\u4f3c\u7684&#xff0c;\u8fd8\u6709\u96c6\u5408\u63a8\u5bfc\u5f0f&#xff08;Set Comprehension&#xff09;&#xff0c;\u7528 {} \u4f46\u53ea\u653e\u5355\u4e2a\u5143\u7d20&#xff08;\u81ea\u52a8\u53bb\u91cd&#xff09;&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u4ece\u5217\u8868\u4e2d\u63d0\u53d6\u6240\u6709\u4e0d\u91cd\u590d\u7684\u5355\u8bcd\u957f\u5ea6<\/span><br \/>\nwords <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;apple&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;banana&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;apricot&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;blueberry&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;cherry&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\nlengths <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>word<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">for<\/span> word <span class=\"token keyword\">in<\/span> words<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>lengths<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># {5, 6, 9}<\/span><\/p>\n<h3>1.7\u3001\u63a8\u5bfc\u5f0f vs \u666e\u901a\u5faa\u73af&#xff1a;\u8be5\u7528\u54ea\u4e2a&#xff1f;<\/h3>\n<p>\u5217\u8868\u63a8\u5bfc\u5f0f\u4e0d\u662f\u94f6\u5f39&#xff0c;\u4ee5\u4e0b\u662f\u9009\u62e9\u5efa\u8bae&#xff1a;<\/p>\n<table>\n<tr>\u573a\u666f\u63a8\u8350\u65b9\u5f0f\u539f\u56e0<\/tr>\n<tbody>\n<tr>\n<td>\u7b80\u5355\u7684\u6620\u5c04\/\u8fc7\u6ee4\u8f6c\u6362<\/td>\n<td>\u5217\u8868\u63a8\u5bfc\u5f0f<\/td>\n<td>\u4e00\u884c\u641e\u5b9a&#xff0c;\u7b80\u6d01\u76f4\u89c2<\/td>\n<\/tr>\n<tr>\n<td>\u590d\u6742\u7684\u903b\u8f91&#xff08;\u8d85\u8fc7 3 \u5c42&#xff09;<\/td>\n<td>\u666e\u901a\u5faa\u73af<\/td>\n<td>\u53ef\u8bfb\u6027\u66f4\u91cd\u8981<\/td>\n<\/tr>\n<tr>\n<td>\u9700\u8981\u8c03\u8bd5\u4e2d\u95f4\u6b65\u9aa4<\/td>\n<td>\u666e\u901a\u5faa\u73af<\/td>\n<td>\u63a8\u5bfc\u5f0f\u4e2d\u95f4\u6b65\u9aa4\u65e0\u6cd5\u6253\u65ad\u70b9<\/td>\n<\/tr>\n<tr>\n<td>\u5904\u7406\u5927\u6587\u4ef6&#xff08;\u767e\u4e07\u7ea7\u5143\u7d20&#xff09;<\/td>\n<td>\u751f\u6210\u5668&#xff08;\u540e\u9762\u8bb2&#xff09;<\/td>\n<td>\u63a8\u5bfc\u5f0f\u4f1a\u4e00\u6b21\u6027\u751f\u6210\u6574\u4e2a\u5217\u8868&#xff0c;\u5360\u5185\u5b58<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e8c\u3001\u751f\u6210\u5668\u4e0e\u8fed\u4ee3\u5668&#xff1a;\u4f18\u96c5\u5904\u7406\u6d77\u91cf\u6570\u636e<\/h2>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00<br \/>\n\u5728\u524d\u4e94\u7bc7\u535a\u5ba2\u4e2d&#xff0c;\u6211\u4eec\u4ece\u96f6\u5f00\u59cb&#xff0c;\u5efa\u7acb\u4e86\u4e00\u5957\u5b8c\u6574\u7684 Python \u7f16\u7a0b\u77e5\u8bc6\u4f53\u7cfb&#xff1a;<br \/>\n\u7b2c1\u7bc7&#xff1a;\u642d\u5efa\u73af\u5883&#xff0c;\u5199\u4e0b\u7b2c\u4e00\u884c\u4ee3\u7801&#xff0c;\u7406\u89e3\u53d8\u91cf\u4e0e\u57fa\u7840\u8bed\u6cd5\u7b2c2\u7bc7&#xff1a;\u638c\u63e1\u6570\u636e\u7c7b\u578b\u4e0e\u8fd0\u7b97\u7b26&#xff0c;\u5efa\u7acb \u201c\u6570\u636e\u201d \u7684\u8ba4\u77e5\u7b2c3\u7bc7&#xff1a;\u638c\u63e1\u6761\u4ef6\u8bed\u53e5\u3001\u5faa\u73af\u3001\u51fd\u6570&#xff0c;\u5efa\u7acb\\&#8221;\u903b\u8f91\\&#8221;\u7684\u8ba4\u77e5\u7b2c4\u7bc7&#xff1a;\u6df1\u5165\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b&#xff0c;\u5efa\u7acb\\&#8221;\u7ed3\u6784\\&#8221;\u7684\u8ba4\u77e5\u7b2c5\u7bc7&#xff1a;\u6587\u4ef6\u64cd<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[567,99,81],"topic":[],"class_list":["post-97667","post","type-post","status-publish","format-standard","hentry","category-server","tag-html","tag-java","tag-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u7b2c6\u7bc7_Python\u9ad8\u7ea7\u8bed\u6cd5\u4e0e\u6807\u51c6\u5e93\u7cbe\u9ad3\uff1a\u4ece\u4f1a\u7528\u5230\u8fbe\u7cbe\u901a - 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