{"id":78,"date":"2026-08-06T00:21:24","date_gmt":"2026-08-05T16:21:24","guid":{"rendered":"https:\/\/ltrainyard.icu\/?p=78"},"modified":"2026-08-06T00:42:41","modified_gmt":"2026-08-05T16:42:41","slug":"day-7-%e5%ad%97%e5%85%b8%e4%b8%8e%e9%9b%86%e5%90%88-%e9%98%b6%e6%ae%b5%e4%b8%80%e5%b0%8f%e9%a1%b9%e7%9b%ae%ef%bc%88%e7%8c%9c%e6%95%b0%e5%ad%97-%e6%88%90%e7%bb%a9%e7%bb%9f%e8%ae%a1%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ltrainyard.icu\/index.php\/2026\/08\/06\/day-7-%e5%ad%97%e5%85%b8%e4%b8%8e%e9%9b%86%e5%90%88-%e9%98%b6%e6%ae%b5%e4%b8%80%e5%b0%8f%e9%a1%b9%e7%9b%ae%ef%bc%88%e7%8c%9c%e6%95%b0%e5%ad%97-%e6%88%90%e7%bb%a9%e7%bb%9f%e8%ae%a1%ef%bc%89\/","title":{"rendered":"| Day 7 | \u5b57\u5178\u4e0e\u96c6\u5408 + \u9636\u6bb5\u4e00\u5c0f\u9879\u76ee\uff08\u731c\u6570\u5b57 \/ \u6210\u7ee9\u7edf\u8ba1\uff09 |"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">1 \u5b57\u5178 \u2014\u2014 \u6309\u300c\u540d\u5b57\u300d\u67e5\u300c\u5185\u5bb9\u300d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u5b66\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5217\u8868\u7528<strong>\u4e0b\u6807\uff080\u30011\u30012\u2026\uff09<\/strong>\u627e\u5143\u7d20\uff0c\u8bb0\u4e0b\u6807\u5f88\u7d2f\u3002\u5b57\u5178\u7528<strong>\u952e<\/strong>\uff08key\uff09\u627e<strong>\u503c<\/strong>\uff08value\uff09\uff0c\u5c31\u50cf\u67e5\u7535\u8bdd\u53f7\u7801\u672c\uff1a\u6309\u300c\u540d\u5b57\u300d\u627e\u5230\u300c\u53f7\u7801\u300d\u3002\u4e3a\u4ec0\u4e48\u96f6\u57fa\u7840\u5fc5\u5b66\uff1f\u56e0\u4e3a\u73b0\u5b9e\u6570\u636e\u51e0\u4e4e\u90fd\u662f\u300c\u6210\u5bf9\u51fa\u73b0\u300d\u7684\u2014\u2014\u5b66\u751f\u7684\u540d\u5b57\u5bf9\u5e94\u6210\u7ee9\u3001\u83dc\u540d\u5bf9\u5e94\u4ef7\u683c\u3002\u5b57\u5178\u8ba9\u6570\u636e\u300c\u6709\u540d\u5b57\u300d\uff0c\u662f\u5904\u7406\u771f\u5b9e\u6570\u636e\u7684\u6838\u5fc3\u5bb9\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5e95\u5c42\u539f\u7406<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b57\u5178\u5e95\u5c42\u662f<strong>\u54c8\u5e0c\u8868<\/strong>\uff08hash table\uff09\uff1a\u7ed9\u6bcf\u4e2a\u952e\u7b97\u4e00\u4e2a\u300c\u54c8\u5e0c\u503c\u300d\uff08\u7c7b\u4f3c\u7d22\u5f15\u7f16\u53f7\uff09\uff0c\u6309\u7f16\u53f7\u76f4\u63a5\u5b9a\u4f4d\u5230\u503c\u7684\u4f4d\u7f6e\uff0c\u6240\u4ee5<strong>\u6309\u952e\u67e5\u503c\u6781\u5feb<\/strong>\u2014\u2014\u4e0d\u7ba1\u5b57\u5178\u6709\u591a\u5927\uff0c\u67e5\u4e00\u6b21\u90fd\u51e0\u4e4e\u662f\u77ac\u95f4\u5b8c\u6210\u3002\u6b63\u56e0\u4e3a\u67e5\u627e\u4f9d\u8d56\u54c8\u5e0c\u503c\uff0c\u5b57\u5178\u7684<strong>\u952e\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b<\/strong>\uff08\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5143\u7ec4\uff09\uff0c\u5217\u8868\u53ef\u53d8\u3001\u7b97\u4e0d\u51fa\u7a33\u5b9a\u54c8\u5e0c\uff0c\u6240\u4ee5\u4e0d\u80fd\u5f53\u952e\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u672f\u8bed\u5c0f\u8bcd\u5178\uff1a<strong>\u54c8\u5e0c\u503c<\/strong>\uff08hash value\uff09\u5c31\u662f\u7ed9\u952e\u7b97\u7684\u4e00\u4e2a\u300c\u7d22\u5f15\u7f16\u53f7\u300d\uff0c\u50cf\u56fe\u4e66\u9986\u7684\u4e66\u53f7\u2014\u2014\u6309\u4e66\u53f7\u76f4\u63a5\u5b9a\u4f4d\uff0c\u4e0d\u7528\u4e00\u672c\u672c\u7ffb\u3002<strong>\u54c8\u5e0c\u8868<\/strong>\uff08hash table\uff09\u5c31\u662f\u7528\u8fd9\u4e2a\u539f\u7406\u7ec4\u7ec7\u6570\u636e\u7684\u7ed3\u6784\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u751f\u6d3b\u7c7b\u6bd4<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b57\u5178\u50cf<strong>\u540d\u7247\u5939<\/strong>\u6216<strong>\u5de5\u5177\u4e66<\/strong>\uff1a\u4f60\u77e5\u9053\u300c\u952e\u300d\uff08\u8bcd\u6761\/\u540d\u5b57\uff09\uff0c\u5c31\u80fd\u67e5\u5230\u300c\u503c\u300d\uff08\u89e3\u91ca\/\u53f7\u7801\uff09\u3002\u952e\u662f\u300c\u600e\u4e48\u627e\u300d\uff0c\u503c\u662f\u300c\u627e\u5230\u4ec0\u4e48\u300d\u3002<code>student[\"name\"]<\/code> \u5c31\u50cf\u7ffb\u5230\u300cname\u300d\u8fd9\u4e00\u9875\uff0c\u770b\u5230\u300c\u5c0f\u660e\u300d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 <strong>\u521b\u5efa\u5b57\u5178<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>student = {\"name\": \"\u5c0f\u660e\", \"age\": 18, \"score\": 92}\nprint(student&#91;\"name\"])    # \u7528\u952e\u53d6\u5bf9\u5e94\u7684\u503c\nprint(student&#91;\"age\"])\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c0f\u660e\n18\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b57\u5178\u7528**\u82b1\u62ec\u53f7 <code>{}<\/code>**\uff0c\u91cc\u9762\u662f <code>\u952e: \u503c<\/code> \u7684\u914d\u5bf9\uff0c\u952e\u548c\u503c\u4e4b\u95f4\u7528\u5192\u53f7\uff0c\u4e00\u5bf9\u4e0e\u4e00\u5bf9\u4e4b\u95f4\u7528\u9017\u53f7\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2 <strong>\u952e\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u7b49<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>menu = {\"\u62c9\u9762\": 15, \"\u997a\u5b50\": 12, \"\u53ef\u4e50\": 4}\nprint(menu&#91;\"\u62c9\u9762\"])       # 15\nprint(menu&#91;\"\u53ef\u4e50\"])       # 4\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6613\u9519\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>student[\"score\"]<\/code>\uff08score \u952e\u4e0d\u5b58\u5728\uff09 \u2192 \u95ee\u9898\uff1a\u62a5 <code>KeyError: 'score'<\/code>\uff0c\u7a0b\u5e8f\u5d29\u6e83 \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u7528 <code>student.get(\"score\", \"\u6682\u65e0\")<\/code> \u8fd4\u56de\u9ed8\u8ba4\u503c\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a\u628a\u5217\u8868\u5f53\u952e\uff1a<code>{[1, 2]: \"x\"}<\/code> \u2192 \u95ee\u9898\uff1a\u62a5 <code>TypeError: unhashable type: 'list'<\/code> \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u952e\u7528\u4e0d\u53ef\u53d8\u7c7b\u578b\uff08\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5143\u7ec4\uff09\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a\u5b57\u5178\u82b1\u62ec\u53f7\u91cc\u6f0f\u4e86\u5192\u53f7\u6216\u9017\u53f7\uff1a<code>{\"name\" \"\u5c0f\u660e\"}<\/code> \u2192 \u95ee\u9898\uff1a\u62a5 <code>SyntaxError<\/code> \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u6bcf\u4e2a\u952e\u503c\u5bf9\u90fd\u662f <code>\u952e: \u503c<\/code> \u4e14\u9017\u53f7\u5206\u9694\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bb0\u5fc6\u53e3\u8bc0<\/strong>\uff1a\u5b57\u5178\u82b1\u62ec\u53f7\uff0c\u952e\u503c\u5192\u53f7\u8fde\uff1b\u6309\u540d\u67e5\u5185\u5bb9\uff0c\u952e\u8981\u4e0d\u53ef\u53d8\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2 \u5b57\u5178\u7684\u589e\u5220\u6539\u67e5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u5b66\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b57\u5178\u80fd\u968f\u65f6\u589e\u3001\u5220\u3001\u6539\u3001\u67e5\u2014\u2014\u52a0\u4e00\u6761\u5b66\u751f\u4fe1\u606f\u3001\u6539\u4e00\u4e2a\u6210\u7ee9\u3001\u5220\u4e00\u9053\u83dc\u3002\u8fd9\u662f\u5b57\u5178\u4f7f\u7528\u9891\u7387\u6700\u9ad8\u7684\u90e8\u5206\uff0c\u51e0\u4e4e\u6bcf\u4e2a\u7528\u5b57\u5178\u7684\u7a0b\u5e8f\u90fd\u79bb\u4e0d\u5f00\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 <strong>\u589e\u5220\u6539\u67e5\u901f\u67e5\u8868<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u64cd\u4f5c<\/th><th>\u5199\u6cd5<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td>\u67e5<\/td><td><code>\u5b57\u5178[\u952e]<\/code><\/td><td>\u53d6\u5bf9\u5e94\u503c\uff08\u952e\u4e0d\u5b58\u5728\u4f1a\u62a5 KeyError\uff09<\/td><\/tr><tr><td>\u67e5\uff08\u5b89\u5168\uff09<\/td><td><code>\u5b57\u5178.get(\u952e, \u9ed8\u8ba4\u503c)<\/code><\/td><td>\u952e\u4e0d\u5b58\u5728\u8fd4\u56de\u9ed8\u8ba4\u503c\uff0c\u4e0d\u62a5\u9519<\/td><\/tr><tr><td>\u589e \/ \u6539<\/td><td><code>\u5b57\u5178[\u952e] = \u503c<\/code><\/td><td>\u952e\u5b58\u5728\u5c31\u6539\uff0c\u4e0d\u5b58\u5728\u5c31\u65b0\u589e<\/td><\/tr><tr><td>\u5220<\/td><td><code>del \u5b57\u5178[\u952e]<\/code><\/td><td>\u5220\u9664\u67d0\u4e2a\u952e\u503c\u5bf9<\/td><\/tr><tr><td>\u5220\uff08\u5b89\u5168\uff09<\/td><td><code>\u5b57\u5178.pop(\u952e, \u9ed8\u8ba4\u503c)<\/code><\/td><td>\u5220\u9664\u5e76\u8fd4\u56de\u503c\uff0c\u952e\u4e0d\u5b58\u5728\u8fd4\u56de\u9ed8\u8ba4\u503c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2 <strong>get \u6bd4 [] \u66f4\u5b89\u5168<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>student = {\"name\": \"\u5c0f\u660e\", \"age\": 18}\nprint(student.get(\"name\"))            # \u5c0f\u660e\nprint(student.get(\"score\", \"\u6682\u65e0\u6210\u7ee9\"))  # \u952e\u4e0d\u5b58\u5728\uff0c\u8fd4\u56de\u9ed8\u8ba4\u503c\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c0f\u660e\n\u6682\u65e0\u6210\u7ee9\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3 <strong>\u589e\u548c\u6539\u2014\u2014\u540c\u4e00\u4e2a\u5199\u6cd5<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>student = {\"name\": \"\u5c0f\u660e\", \"age\": 18}\nstudent&#91;\"score\"] = 92      # \u952e\u4e0d\u5b58\u5728 -&gt; \u65b0\u589e\nstudent&#91;\"age\"] = 19        # \u952e\u5b58\u5728 -&gt; \u4fee\u6539\nprint(student)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{'name': '\u5c0f\u660e', 'age': 19, 'score': 92}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">4 <strong>\u5220\u2014\u2014del \u548c pop<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>menu = {\"\u62c9\u9762\": 15, \"\u997a\u5b50\": 12, \"\u53ef\u4e50\": 4}\ndel menu&#91;\"\u53ef\u4e50\"]\nremoved = menu.pop(\"\u997a\u5b50\", \"\u6ca1\u6709\u8fd9\u4e2a\u83dc\")\nprint(removed)            # 12\nprint(menu)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>12\n{'\u62c9\u9762': 15}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6613\u9519\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>student[\"score\"] = 92<\/code> \u4ee5\u4e3a\u53ea\u80fd\u65b0\u589e \u2192 \u95ee\u9898\uff1a\u5982\u679c\u952e\u5df2\u5b58\u5728\u4f1a<strong>\u8986\u76d6\u65e7\u503c<\/strong>\uff0c\u4e0d\u662f\u62a5\u9519 \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u60f3\u300c\u53ea\u65b0\u589e\u4e0d\u8986\u76d6\u300d\u5148 <code>if \"score\" not in student:<\/code> \u5224\u65ad\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>del menu[\"\u53ef\u4e50\"]<\/code> \u800c\u53ef\u4e50\u4e0d\u5b58\u5728 \u2192 \u95ee\u9898\uff1a\u62a5 <code>KeyError<\/code> \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u7528 <code>menu.pop(\"\u53ef\u4e50\", None)<\/code> \u6216\u5148\u5224\u65ad\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a\u786e\u5b9a\u952e\u5b58\u5728\u5374\u8fd8\u7528 get \u2192 \u95ee\u9898\uff1a\u4e0d\u62a5\u9519\u4f46\u53ef\u80fd\u6084\u6084\u62ff\u5230\u9ed8\u8ba4\u503c\uff0c\u63a9\u76d6 bug \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u952e\u4e00\u5b9a\u5b58\u5728\u7528 <code>[]<\/code>\uff08\u7b80\u5355\u76f4\u63a5\uff09\uff0c\u53ef\u80fd\u4e0d\u5b58\u5728\u624d\u7528 <code>get<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bb0\u5fc6\u53e3\u8bc0<\/strong>\uff1a\u67e5\u7528\u4e2d\u62ec\u53f7\uff0cget \u66f4\u7a33\u5f53\uff1b\u8d4b\u503c\u5373\u589e\u6539\uff0cdel \u5220\u952e\u5bf9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3 \u904d\u5386\u5b57\u5178<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u5b66\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u904d\u5386\u5b57\u5178\u662f\u628a\u5b57\u5178\u91cc\u7684\u6570\u636e\u300c\u4e00\u4e2a\u4e2a\u62ff\u51fa\u6765\u300d\u5904\u7406\u7684\u65b9\u5f0f\u3002\u7edf\u8ba1\u3001\u6253\u5370\u3001\u6c47\u603b\u65f6\u6700\u9ad8\u9891\u7684\u5199\u6cd5\u5c31\u662f\u904d\u5386\u2014\u2014\u6bd4\u5982\u628a\u83dc\u5355\u5168\u90e8\u6253\u5370\u51fa\u6765\u3001\u628a\u6240\u6709\u5b66\u751f\u7684\u6210\u7ee9\u7b97\u4e00\u904d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 <strong>\u904d\u5386\u952e<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>menu = {\"\u62c9\u9762\": 15, \"\u997a\u5b50\": 12}\nfor key in menu:\n    print(key)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u62c9\u9762\n\u997a\u5b50\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2 <strong>\u904d\u5386\u503c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>menu = {\"\u62c9\u9762\": 15, \"\u997a\u5b50\": 12}\nfor value in menu.values():\n    print(value)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>15\n12\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3 <strong>\u540c\u65f6\u904d\u5386\u952e\u548c\u503c\uff08\u6700\u5e38\u7528\uff09<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>menu = {\"\u62c9\u9762\": 15, \"\u997a\u5b50\": 12}\nfor name, price in menu.items():\n    print(name, \"\u7684\u4ef7\u683c\u662f\", price)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u62c9\u9762 \u7684\u4ef7\u683c\u662f 15\n\u997a\u5b50 \u7684\u4ef7\u683c\u662f 12\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5173\u952e\u7406\u89e3<\/strong>\uff1a<code>\u5b57\u5178.items()<\/code> \u4e00\u6b21\u7ed9\u51fa\u300c\u952e\u548c\u503c\u300d\u4e24\u4e2a\u4e1c\u897f\uff0c\u6240\u4ee5\u5faa\u73af\u53d8\u91cf\u8981\u5199\u4e24\u4e2a\uff08<code>for name, price in ...<\/code>\uff09\u2014\u2014\u8fd9\u6b63\u662f\u5143\u7ec4\u62c6\u5305\uff08Day 6\uff09\u5728\u5b9e\u6218\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6613\u9519\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>for name, price in menu:<\/code>\uff08\u5fd8\u4e86 .items()\uff09 \u2192 \u95ee\u9898\uff1a\u5faa\u73af\u53d8\u91cf\u53ea\u62ff\u5230\u952e\uff0c\u62c6\u5305\u4f1a\u62a5\u9519\u6216\u62ff\u5230\u9519\u8bef\u6570\u636e \u2192 \u6b63\u786e\u5199\u6cd5\uff1a<code>for name, price in menu.items():<\/code>\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a\u904d\u5386\u5b57\u5178\u65f6\u5220\u9664\u952e \u2192 \u95ee\u9898\uff1a\u62a5 <code>RuntimeError: dictionary changed size during iteration<\/code> \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u5148\u6536\u96c6\u8981\u5220\u7684\u952e\uff0c\u904d\u5386\u7ed3\u675f\u540e\u518d\u5220\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bb0\u5fc6\u53e3\u8bc0<\/strong>\uff1a\u904d\u5386\u952e\u503c\u7528 items\uff0c\u4e24\u4e2a\u53d8\u91cf\u4e00\u8d77\u62ff\uff1b\u53ea\u60f3\u8981\u952e\u76f4\u63a5 for\uff0c\u53ea\u60f3\u8981\u503c\u52a0 .values\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4 \u5d4c\u5957\u5bb9\u5668 \u2014\u2014 \u5bb9\u5668\u91cc\u5957\u5bb9\u5668<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u5b66\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5217\u8868\u548c\u5b57\u5178\u53ef\u4ee5\u4e92\u76f8\u5d4c\u5957\uff0c\u7ec4\u5408\u51fa\u975e\u5e38\u5f3a\u5927\u7684\u6570\u636e\u7ed3\u6784\u3002\u6bd4\u5982\u300c\u4e00\u4e2a\u73ed\u7684\u5b66\u751f\u4fe1\u606f\u300d\uff1a\u5916\u5c42\u662f\u5217\u8868\uff0c\u91cc\u9762\u6bcf\u4e2a\u5143\u7d20\u662f\u4e00\u4e2a\u5b57\u5178\u3002\u4e3a\u4ec0\u4e48\u5fc5\u5b66\uff1f\u56e0\u4e3a\u771f\u5b9e\u6570\u636e\u51e0\u4e4e\u90fd\u662f\u591a\u5c42\u7ed3\u6784\u2014\u2014\u5b66\u6821\u91cc\u6709\u73ed\u7ea7\u3001\u73ed\u7ea7\u91cc\u6709\u5b66\u751f\u3001\u5b66\u751f\u6709\u5404\u9879\u5c5e\u6027\uff0c\u4e0d\u4f1a\u5d4c\u5957\u5c31\u65e0\u6cd5\u8868\u8fbe\u771f\u5b9e\u4e16\u754c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 <strong>\u5217\u8868\u5957\u5b57\u5178<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>students = &#91;\n    {\"name\": \"\u5c0f\u660e\", \"score\": 92},\n    {\"name\": \"\u5c0f\u7ea2\", \"score\": 88},\n    {\"name\": \"\u5c0f\u521a\", \"score\": 75},\n]\nprint(students&#91;0]&#91;\"name\"])      # \u5148\u6309\u4e0b\u6807\u53d6\u5b57\u5178\uff0c\u518d\u6309\u952e\u53d6\u503c\nprint(students&#91;1]&#91;\"score\"])\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c0f\u660e\n88\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2 <strong>\u5b57\u5178\u5957\u5217\u8868<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class_info = {\n    \"name\": \"Python \u73ed\",\n    \"students\": &#91;\"\u5c0f\u660e\", \"\u5c0f\u7ea2\", \"\u5c0f\u521a\"],\n    \"scores\": &#91;92, 88, 75],\n}\nprint(class_info&#91;\"name\"])\nprint(class_info&#91;\"students\"]&#91;2])   # \u5148\u53d6\u5217\u8868\uff0c\u518d\u6309\u4e0b\u6807\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Python \u73ed\n\u5c0f\u521a\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3 <strong>\u904d\u5386\u5d4c\u5957\u7ed3\u6784\uff08\u9010\u4e2a\u6253\u5370\u5b66\u751f\u6210\u7ee9\uff09<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>students = &#91;\n    {\"name\": \"\u5c0f\u660e\", \"score\": 92},\n    {\"name\": \"\u5c0f\u7ea2\", \"score\": 88},\n]\nfor s in students:\n    print(s&#91;\"name\"], \"\u8003\u4e86\", s&#91;\"score\"], \"\u5206\")\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c0f\u660e \u8003\u4e86 92 \u5206\n\u5c0f\u7ea2 \u8003\u4e86 88 \u5206\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5173\u952e\u7406\u89e3<\/strong>\uff1a\u5d4c\u5957\u5c31\u662f\u300c\u4e00\u5c42\u4e00\u5c42\u5265\u5f00\u300d\u2014\u2014\u5148\u6309\u5916\u5c42\u5bb9\u5668\u7684\u53d6\u6cd5\u53d6\u51fa\u5185\u5c42\u5bb9\u5668\uff0c\u518d\u6309\u5185\u5c42\u5bb9\u5668\u7684\u53d6\u6cd5\u53d6\u6570\u636e\u3002\u591a\u7ec3\u51e0\u6b21\u300c\u5265\u6d0b\u8471\u300d\u5c31\u4e0d\u96be\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6613\u9519\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>students[0]<\/code> \u540e\u5fd8\u4e86\u518d <code>[\"name\"]<\/code> \u2192 \u95ee\u9898\uff1a\u62ff\u5230\u7684\u662f\u6574\u4e2a\u5b57\u5178 <code>{'name': '\u5c0f\u660e', ...}<\/code>\uff0c\u4e0d\u662f\u540d\u5b57 \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u591a\u5c42\u8bbf\u95ee\u8981\u5c42\u5c42\u53d6\uff1a<code>students[0][\"name\"]<\/code>\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a\u8bbf\u95ee\u5c42\u7ea7\u5199\u53cd\uff1a<code>students[\"name\"][0]<\/code> \u2192 \u95ee\u9898\uff1astudents \u662f\u5217\u8868\uff0c\u4e0d\u80fd\u7528\u952e\u53d6 \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u5916\u5c42\u662f\u5217\u8868\u7528\u4e0b\u6807\uff0c\u5185\u5c42\u662f\u5b57\u5178\u7528\u952e\uff0c\u770b\u51c6\u6bcf\u4e00\u5c42\u7684\u5bb9\u5668\u7c7b\u578b\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bb0\u5fc6\u53e3\u8bc0<\/strong>\uff1a\u5d4c\u5957\u50cf\u6d0b\u8471\uff0c\u4e00\u5c42\u4e00\u5c42\u5265\uff1b\u5916\u5c42\u770b\u7c7b\u578b\uff0c\u4e0b\u6807\u6216\u952e\u53d6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5 \u96c6\u5408 \u2014\u2014 \u81ea\u52a8\u53bb\u91cd\u7684\u5bb9\u5668<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u5b66\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u5408\u7528<strong>\u82b1\u62ec\u53f7 <code>{}<\/code><\/strong> \u6216 <code>set()<\/code> \u521b\u5efa\uff0c\u7279\u70b9\u6709\u4e24\u4e2a\uff1a<strong>\u5143\u7d20\u4e0d\u91cd\u590d<\/strong>\u3001<strong>\u987a\u5e8f\u4e0d\u4fdd\u8bc1<\/strong>\u3002\u5b83\u6700\u5e38\u7528\u7684\u573a\u666f\u5c31\u662f\u300c\u53bb\u91cd\u300d\u2014\u2014\u7edf\u8ba1\u6210\u7ee9\u6709\u51e0\u79cd\u4e0d\u540c\u7684\u5206\u503c\u3001\u7edf\u8ba1\u4e00\u7bc7\u6587\u7ae0\u51fa\u73b0\u4e86\u54ea\u4e9b\u8bcd\uff0c\u4e00\u884c\u641e\u5b9a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5e95\u5c42\u539f\u7406<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u5408\u7684\u5e95\u5c42\u4e5f\u662f<strong>\u54c8\u5e0c\u8868<\/strong>\uff08\u548c\u5b57\u5178\u540c\u6e90\uff0c\u76f8\u5f53\u4e8e\u300c\u53ea\u6709\u952e\u6ca1\u6709\u503c\u300d\u7684\u5b57\u5178\uff09\u3002\u6b63\u56e0\u4e3a\u6309\u54c8\u5e0c\u503c\u5b58\u50a8\uff0c\u96c6\u5408\u7684\u4e24\u4e2a\u7279\u6027\u7531\u6b64\u800c\u6765\uff1a\u2460 \u5143\u7d20\u91cd\u590d\u65f6\uff0c\u54c8\u5e0c\u503c\u76f8\u540c\uff0c\u81ea\u52a8\u5408\u5e76\u2014\u2014\u8fd9\u5c31\u662f<strong>\u81ea\u52a8\u53bb\u91cd<\/strong>\uff1b\u2461 \u67e5\u627e\u5143\u7d20\u7528\u54c8\u5e0c\u5b9a\u4f4d\u800c\u4e0d\u662f\u9010\u4e2a\u6bd4\u5bf9\uff0c\u6240\u4ee5 <code>\u503c in \u96c6\u5408<\/code> <strong>\u975e\u5e38\u5feb<\/strong>\u3002\u540c\u65f6\uff0c\u54c8\u5e0c\u5b58\u50a8\u4e0d\u4fdd\u8bc1\u987a\u5e8f\uff0c\u6240\u4ee5\u96c6\u5408\u6ca1\u6709\u4e0b\u6807\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u751f\u6d3b\u7c7b\u6bd4<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96c6\u5408\u50cf<strong>\u8d85\u5e02\u7684\u4f1a\u5458\u540d\u5355<\/strong>\uff1a\u540c\u4e00\u4e2a\u4f1a\u5458\u53ea\u767b\u8bb0\u4e00\u6b21\uff08\u81ea\u52a8\u53bb\u91cd\uff09\uff0c\u800c\u4e14\u540d\u5355\u4e0d\u662f\u6309\u767b\u8bb0\u987a\u5e8f\u653e\u7684\uff0c\u662f\u6309\u4f1a\u5458\u7f16\u53f7\uff08\u54c8\u5e0c\u503c\uff09\u653e\u7684\u2014\u2014\u6240\u4ee5\u300c\u627e\u4e00\u4e2a\u4eba\u5feb\u4e0d\u5feb\u300d\u548c\u540d\u5355\u957f\u77ed\u65e0\u5173\uff0c\u4f46\u540d\u5355\u6ca1\u6709\u5148\u540e\u987a\u5e8f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\u4e8b\u9879\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 <strong>\u521b\u5efa\u96c6\u5408\uff0c\u91cd\u590d\u5143\u7d20\u81ea\u52a8\u53ea\u5269\u4e00\u4e2a<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>colors = {\"\u7ea2\", \"\u7eff\", \"\u7ea2\", \"\u84dd\", \"\u7eff\"}\nprint(colors)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{'\u7ea2', '\u7eff', '\u84dd'}\uff08\u987a\u5e8f\u53ef\u80fd\u4e0d\u540c\uff0c\u4f46\u4e00\u5b9a\u4e0d\u91cd\u590d\uff09\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2 <strong>\u5217\u8868\u8f6c\u96c6\u5408\u53bb\u91cd<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nums = &#91;1, 2, 2, 3, 3, 3, 4]\nunique = set(nums)\nprint(unique)                 # {1, 2, 3, 4}\nback_to_list = list(unique)   # \u9700\u8981\u65f6\u518d\u8f6c\u56de\u5217\u8868\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{1, 2, 3, 4}\n&#91;1, 2, 3, 4]\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">3 <strong>\u96c6\u5408\u5e38\u7528\u64cd\u4f5c<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a = {1, 2, 3}\nb = {3, 4, 5}\nprint(a | b)      # \u5e76\u96c6\uff1a\u5408\u5e76\u53bb\u91cd\nprint(a &amp; b)      # \u4ea4\u96c6\uff1a\u4e24\u8fb9\u90fd\u6709\nprint(a - b)      # \u5dee\u96c6\uff1aa \u6709 b \u6ca1\u6709\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{1, 2, 3, 4, 5}\n{3}\n{1, 2}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6613\u9519\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>{1, 2, 3}<\/code> \u548c <code>{\"a\": 1}<\/code> \u5206\u4e0d\u6e05 \u2192 \u95ee\u9898\uff1a\u90fd\u662f\u82b1\u62ec\u53f7\uff0c\u524d\u8005\u662f\u96c6\u5408\u3001\u540e\u8005\u662f\u5b57\u5178 \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u770b\u6709\u6ca1\u6709\u5192\u53f7\u2014\u2014\u6709\u5192\u53f7\u662f\u5b57\u5178\uff0c\u6ca1\u6709\u662f\u96c6\u5408\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>colors[0]<\/code> \u60f3\u53d6\u96c6\u5408\u7b2c\u4e00\u4e2a\u5143\u7d20 \u2192 \u95ee\u9898\uff1a\u96c6\u5408\u6ca1\u6709\u987a\u5e8f\u3001\u4e0d\u80fd\u6309\u4e0b\u6807\u53d6\uff0c\u62a5 <code>TypeError<\/code> \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u9700\u8981\u6309\u4e0b\u6807\u53d6\u5c31\u5148 <code>list(colors)<\/code> \u8f6c\u5217\u8868\u3002<\/li>\n\n\n\n<li>\u9519\u8bef\u5199\u6cd5\uff1a<code>set([1, [2]])<\/code> \u5f80\u96c6\u5408\u91cc\u653e\u5217\u8868 \u2192 \u95ee\u9898\uff1a\u62a5 <code>TypeError: unhashable type: 'list'<\/code> \u2192 \u6b63\u786e\u5199\u6cd5\uff1a\u96c6\u5408\u5143\u7d20\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bb0\u5fc6\u53e3\u8bc0<\/strong>\uff1a\u96c6\u5408\u82b1\u62ec\u53f7\uff0c\u81ea\u52a8\u53bb\u91cd\u590d\uff1b\u5224\u65ad\u5728\u4e0d\u5728\uff0c\u5feb\u5f97\u50cf\u98de\uff1b\u6ca1\u6709\u987a\u5e8f\u65e0\u4e0b\u6807\uff0c\u8981\u6392\u5e8f\u5c31\u8f6c\u5217\u8868\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6 \u9636\u6bb5\u4e00\u5c0f\u9879\u76ee \u2014\u2014 \u731c\u6570\u5b57\u6e38\u620f + \u6210\u7ee9\u7edf\u8ba1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u5929\u662f\u9636\u6bb5\u4e00\u6536\u5b98\u65e5\uff0c\u4e24\u4e2a\u9879\u76ee\u628a Day 1~7 \u7684\u77e5\u8bc6\u4e32\u6210\u5b8c\u6574\u7684\u7a0b\u5e8f\u3002<strong>\u5148\u81ea\u5df1\u60f3\uff0c\u518d\u770b\u53c2\u8003\u4ee3\u7801<\/strong>\u2014\u2014\u9879\u76ee\u505a\u4e0d\u51fa\u6765\u5f80\u5f80\u4e0d\u662f\u4eca\u5929\u7684\u95ee\u9898\uff0c\u800c\u662f\u524d\u9762\u67d0\u5929\u7684\u57fa\u7840\u6ca1\u6253\u7262\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u9879\u76ee 1\uff1a\u731c\u6570\u5b57\u6e38\u620f<\/strong> \u2014\u2014 \u7a0b\u5e8f\u968f\u673a\u751f\u6210 1~100 \u7684\u6574\u6570\uff0c\u7528\u6237\u5faa\u73af\u731c\uff0c\u63d0\u793a\u300c\u5927\u4e86\/\u5c0f\u4e86\u300d\uff0c\u731c\u4e2d\u663e\u793a\u6b21\u6570\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u731c\u6570\u5b57\u6e38\u620f\nimport random\n\ntarget = random.randint(1, 100)\nguess_count = 0\n\nprint(\"\u6211\u60f3\u597d\u4e86\u4e00\u4e2a 1~100 \u4e4b\u95f4\u7684\u6570\u5b57\uff0c\u4f60\u6765\u731c\u731c\u770b\uff01\")\n\nwhile True:\n    guess = int(input(\"\u8bf7\u8f93\u5165\u4f60\u7684\u731c\u6d4b\uff1a\"))\n    guess_count = guess_count + 1\n\n    if guess &gt; target:\n        print(\"\u592a\u5927\u4e86\uff0c\u518d\u5c0f\u4e00\u70b9\")\n    elif guess &lt; target:\n        print(\"\u592a\u5c0f\u4e86\uff0c\u518d\u5927\u4e00\u70b9\")\n    else:\n        print(\"\u606d\u559c\u4f60\uff01\u731c\u5bf9\u4e86\uff0c\u7b54\u6848\u5c31\u662f\", target)\n        print(\"\u4f60\u4e00\u5171\u731c\u4e86\", guess_count, \"\u6b21\")\n        break\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u9879\u76ee 2\uff1a\u6210\u7ee9\u7edf\u8ba1\u811a\u672c<\/strong> \u2014\u2014 \u628a N \u4e2a\u5b66\u751f\u7684\u6210\u7ee9\u653e\u8fdb\u5217\u8868\uff0c\u7edf\u8ba1\u5e73\u5747\u5206\u3001\u6700\u9ad8\u5206\u3001\u6700\u4f4e\u5206\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u6210\u7ee9\u7edf\u8ba1\u811a\u672c\nn = int(input(\"\u8bf7\u8f93\u5165\u5b66\u751f\u4eba\u6570\uff1a\"))\nscores = &#91;]\n\nfor i in range(n):\n    score = float(input(f\"\u8bf7\u8f93\u5165\u7b2c {i + 1} \u4e2a\u5b66\u751f\u7684\u6210\u7ee9\uff1a\"))\n    scores.append(score)\n\naverage = sum(scores) \/ len(scores)   # sum() \u662f\u5185\u7f6e\u7684\u6c42\u548c\u51fd\u6570\nhighest = max(scores)                 # max() \u6c42\u6700\u5927\u503c\nlowest = min(scores)                  # min() \u6c42\u6700\u5c0f\u503c\n\nprint(\"\u6210\u7ee9\u5355\uff1a\", scores)\nprint(\"\u5e73\u5747\u5206\uff1a\", average)\nprint(\"\u6700\u9ad8\u5206\uff1a\", highest)\nprint(\"\u6700\u4f4e\u5206\uff1a\", lowest)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e24\u4e2a\u9879\u76ee\u7684\u77e5\u8bc6\u70b9\u62c6\u89e3<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9879\u76ee<\/th><th>\u7528\u5230\u7684\u77e5\u8bc6\u70b9<\/th><th>\u6765\u81ea\u54ea\u4e00\u5929<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td>\u731c\u6570\u5b57<\/td><td><code>target = random.randint(1, 100)<\/code>\u3001<code>guess_count = 0<\/code><\/td><td>Day 1<\/td><td>\u5b58\u7b54\u6848\u3001\u5b58\u6b21\u6570<\/td><\/tr><tr><td>\u731c\u6570\u5b57<\/td><td><code>int(input(...))<\/code><\/td><td>Day 2<\/td><td>\u5b57\u7b26\u4e32\u8f6c\u6570\u5b57\u624d\u80fd\u6bd4\u8f83<\/td><\/tr><tr><td>\u731c\u6570\u5b57<\/td><td><code>guess &gt; target<\/code>\u3001<code>guess &lt; target<\/code><\/td><td>Day 3<\/td><td>\u5224\u65ad\u5927\u4e86\u8fd8\u662f\u5c0f\u4e86<\/td><\/tr><tr><td>\u731c\u6570\u5b57<\/td><td><code>if \/ elif \/ else<\/code><\/td><td>Day 4<\/td><td>\u4e09\u8def\u5206\u652f\uff1a\u5927 \/ \u5c0f \/ \u5bf9<\/td><\/tr><tr><td>\u731c\u6570\u5b57<\/td><td><code>while True:<\/code> + <code>break<\/code><\/td><td>Day 5<\/td><td>\u53cd\u590d\u731c\u76f4\u5230\u731c\u4e2d<\/td><\/tr><tr><td>\u6210\u7ee9\u7edf\u8ba1<\/td><td><code>for i in range(n)<\/code><\/td><td>Day 5<\/td><td>\u5faa\u73af N \u6b21\u9010\u4e2a\u8f93\u5165\u6210\u7ee9<\/td><\/tr><tr><td>\u6210\u7ee9\u7edf\u8ba1<\/td><td><code>scores = []<\/code>\u3001<code>scores.append(score)<\/code><\/td><td>Day 6<\/td><td>\u6536\u96c6\u6240\u6709\u6210\u7ee9<\/td><\/tr><tr><td>\u6210\u7ee9\u7edf\u8ba1<\/td><td><code>sum()<\/code> \/ <code>max()<\/code> \/ <code>min()<\/code> \/ <code>len()<\/code><\/td><td>Day 6 \u6269\u5c55<\/td><td>\u6c42\u548c\u3001\u6700\u5927\u3001\u6700\u5c0f\u3001\u4e2a\u6570<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u60f3\u4e00\u60f3<\/strong>\uff1a\u53bb\u6389\u6700\u9ad8\u5206\u548c\u6700\u4f4e\u5206\u540e\u7684\u5e73\u5747\u5206\u600e\u4e48\u7b97\uff1f\u601d\u8def\uff1a\u5148 <code>scores.sort()<\/code> \u6392\u5e8f\uff0c\u518d <code>scores[1:-1]<\/code> \u5207\u7247\u53bb\u6389\u9996\u5c3e\uff0c\u6700\u540e <code>sum(middle) \/ len(middle)<\/code>\u2014\u2014\u628a Day 6 \u7684\u300c\u6392\u5e8f + \u5207\u7247\u300d\u548c Day 3 \u7684\u300c\u6c42\u5e73\u5747\u300d\u4e32\u5728\u4e00\u8d77\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4eca\u65e5\u603b\u7ed3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b57\u5178\u7528 <code>\u952e: \u503c<\/code> \u5b58\u6570\u636e\uff0c<code>\u5b57\u5178[\u952e]<\/code> \u53d6\u503c\uff0c<code>get()<\/code> \u66f4\u5b89\u5168\uff08\u952e\u4e0d\u5b58\u5728\u8fd4\u56de\u9ed8\u8ba4\u503c\uff09\n<code>for k, v in \u5b57\u5178.items()<\/code> \u662f\u904d\u5386\u5b57\u5178\u6700\u5e38\u7528\u7684\u5199\u6cd5\n\u5217\u8868\u548c\u5b57\u5178\u53ef\u4ee5\u5d4c\u5957\u7ec4\u5408\uff0c\u8bbf\u95ee\u65f6\u300c\u4e00\u5c42\u5c42\u5265\u5f00\u300d\u2014\u2014\u5916\u5c42\u770b\u5bb9\u5668\u7c7b\u578b\n\u96c6\u5408\u81ea\u52a8\u53bb\u91cd\uff0c\u9002\u5408\u300c\u53bb\u91cd + \u5feb\u901f\u5224\u65ad\u5728\u4e0d\u5728\u300d\uff1b\u6ca1\u6709\u987a\u5e8f\u3001\u4e0d\u80fd\u6309\u4e0b\u6807\u53d6\n\u5b57\u5178\u7684\u952e\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b\uff08\u5217\u8868\u4e0d\u884c\uff0c\u5143\u7ec4\u53ef\u4ee5\uff09\n\u9636\u6bb5\u77e5\u8bc6\u5730\u56fe\uff1a\u53d8\u91cf \u2192 \u6570\u636e\u7c7b\u578b \u2192 \u8fd0\u7b97\u7b26 \u2192 \u6761\u4ef6 \u2192 \u5faa\u73af \u2192 \u5217\u8868\u5143\u7ec4 \u2192 \u5b57\u5178\u96c6\u5408\uff0c\u4e00\u73af\u6263\u4e00\u73af\n\u9879\u76ee\u62c6\u89e3\u80fd\u529b\uff1a\u80fd\u628a\u300c\u731c\u6570\u5b57\u300d\u300c\u6210\u7ee9\u7edf\u8ba1\u300d\u62c6\u6210\u300c\u7528\u5230\u4e86\u54ea\u4e9b\u77e5\u8bc6\u70b9\u300d\u7684\u6e05\u5355<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u62a5\u9519<\/th><th>\u539f\u56e0<\/th><th>\u4fee\u590d<\/th><\/tr><\/thead><tbody><tr><td><code>KeyError: 'xxx'<\/code><\/td><td>\u7528 <code>\u5b57\u5178[\u952e]<\/code> \u53d6\u503c\uff0c\u4f46\u952e\u4e0d\u5b58\u5728<\/td><td>\u6539\u7528 <code>\u5b57\u5178.get(\u952e, \u9ed8\u8ba4\u503c)<\/code>\uff0c\u6216\u5148 <code>if \u952e in \u5b57\u5178<\/code> \u5224\u65ad<\/td><\/tr><tr><td><code>SyntaxError: invalid syntax<\/code><\/td><td>\u5b57\u5178\u82b1\u62ec\u53f7\u91cc\u6f0f\u4e86\u5192\u53f7\u6216\u9017\u53f7<\/td><td>\u68c0\u67e5\u6bcf\u4e2a\u952e\u503c\u5bf9\u662f\u5426\u90fd\u662f <code>\u952e: \u503c<\/code> \u4e14\u9017\u53f7\u5206\u9694<\/td><\/tr><tr><td><code>TypeError: unhashable type: 'list'<\/code><\/td><td>\u8bd5\u56fe\u628a\u5217\u8868\u5f53\u4f5c\u5b57\u5178\u7684\u952e\u6216\u653e\u8fdb\u96c6\u5408<\/td><td>\u952e\u548c\u96c6\u5408\u5143\u7d20\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b\uff08\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5143\u7ec4\uff09\uff0c\u4e0d\u80fd\u7528\u5217\u8868<\/td><\/tr><tr><td><code>ValueError: min() arg is an empty sequence<\/code><\/td><td>\u5bf9\u7a7a\u5217\u8868\u8c03\u7528 max\/min\/sum<\/td><td>\u5148\u5224\u65ad\u5217\u8868\u662f\u5426\u4e3a\u7a7a\u518d\u7edf\u8ba1<\/td><\/tr><tr><td><code>NameError: name 'random' is not defined<\/code><\/td><td>\u7528\u4e86 random \u4f46\u5fd8\u4e86\u5bfc\u5165<\/td><td>\u6587\u4ef6\u5f00\u5934\u5199 <code>import random<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>1 \u5b57\u5178 \u2014\u2014 \u6309\u300c\u540d\u5b57\u300d\u67e5\u300c\u5185\u5bb9\u300d \u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u5b66\uff1f \u5217\u8868\u7528\u4e0b\u6807\uff080\u30011\u30012\u2026\uff09\u627e\u5143\u7d20\uff0c\u8bb0\u4e0b\u6807\u5f88\u7d2f\u3002\u5b57\u5178\u7528 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[16,9],"tags":[],"class_list":["post-78","post","type-post","status-publish","format-standard","hentry","category-python","category-code-dev"],"_links":{"self":[{"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/posts\/78","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/comments?post=78"}],"version-history":[{"count":2,"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/posts\/78\/revisions"}],"predecessor-version":[{"id":136,"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/posts\/78\/revisions\/136"}],"wp:attachment":[{"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/media?parent=78"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/categories?post=78"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ltrainyard.icu\/index.php\/wp-json\/wp\/v2\/tags?post=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}