{"id":71,"date":"2026-05-08T22:18:53","date_gmt":"2026-05-08T14:18:53","guid":{"rendered":"http:\/\/49.232.244.149\/?p=71"},"modified":"2026-05-08T22:21:43","modified_gmt":"2026-05-08T14:21:43","slug":"py%e5%a4%8d%e4%b9%a0%e8%b5%84%e6%96%99","status":"publish","type":"post","link":"https:\/\/www.everfades.cn\/index.php\/2026\/05\/08\/py%e5%a4%8d%e4%b9%a0%e8%b5%84%e6%96%99\/","title":{"rendered":"py\u590d\u4e60\u8d44\u6599(?"},"content":{"rendered":"<h2>\u7b2c\u4e00\u7ae0 python\u8bed\u8a00\u6982\u8ff0<\/h2>\n<p>1\uff0e\u591a\u9009\u9898\uff1a\u4e0b\u9762\u54ea\u4e9b\u5c5e\u4e8e Python \u8bed\u8a00\u7684\u7279\u70b9\uff1f\uff08ABCD\uff09<\/p>\n<p>A\uff0e\u8de8\u5e73\u53f0 B\uff0e\u5f00\u6e90 C\uff0e\u89e3\u91ca\u6267\u884c D\uff0e\u652f\u6301\u51fd\u6570\u5f0f\u7f16\u7a0b<\/p>\n<p>2\uff0e\u591a\u9009\u9898\uff1a\u4e0b\u9762\u80fd\u591f\u652f\u6301 Python \u5f00\u53d1\u7684\u73af\u5883\u6709\u54ea\u4e9b\uff1f\uff08ABCD\uff09<\/p>\n<p>A\uff0eIDLE B\uff0eAnaconda3 C\uff0ePyCharm D\uff0eEclipse<\/p>\n<p>3\uff0e\u591a\u9009\u9898\uff1a\u4e0b\u9762\u54ea\u4e9b\u662f\u6b63\u786e\u7684 Python \u6807\u51c6\u5e93\u5bf9\u8c61\u5bfc\u5165\u65b9\u5f0f\uff1f\uff08BD\uff09<\/p>\n<p>A\uff0eimport math.sin B\uff0efrom math import sin<\/p>\n<p>C\uff0eimport math.<em> D\uff0efrom math import <\/em><\/p>\n<p>4.\u89e3\u91ca\u5bfc\u5165\u6807\u51c6\u5e93\u4e0e\u6269\u5c55\u5e93\u4e2d\u5bf9\u8c61\u7684\u51e0\u79cd\u65b9\u6cd5\u4e4b\u95f4\u7684\u533a\u522b\u3002<\/p>\n<blockquote><p>import \u5e93\u540d<\/p>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u4e0d\u4f1a\u91cd\u540d\uff0c\u6e05\u6670\u5b89\u5168<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u6bcf\u6b21\u90fd\u8981\u5199 \u5e93\u540d\u3002\u51fd\u6570<\/p>\n<p>import \u5e93\u540d as \u522b\u540d<\/p>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u540d\u5b57\u77ed\uff0c\u5199\u8d77\u6765\u5feb<\/p>\n<p>from \u5e93\u540d import \u5bf9\u8c61<\/p>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u76f4\u63a5\u7528\u51fd\u6570\u540d\uff0c\u4e0d\u7528\u5199\u5e93\u540d<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u53ea\u80fd\u7528\u6307\u5b9a\u5bf9\u8c61<\/p>\n<p>from \u5e93\u540d import *<\/p>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u4e00\u6b21\u6027\u5bfc\u5165\u6240\u6709\u51fd\u6570 \/ \u53d8\u91cf<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u5bb9\u6613\u91cd\u540d\u3001\u4ee3\u7801\u53ef\u8bfb\u6027\u5dee<\/p><\/blockquote>\n<h2>\u7b2c2\u7ae0 \u8fd0\u7b97\u7b26\u3001\u8868\u8fbe\u5f0f\u4e0e\u5185\u7f6e\u5bf9\u8c61<\/h2>\n<ul>\n<li>\u7406\u89e3\u53d8\u91cf\u7c7b\u578b\u7684\u52a8\u6001\u6027<\/li>\n<li>\u638c\u63e1\u8fd0\u7b97\u7b26\u7684\u7528\u6cd5<\/li>\n<li>\u638c\u63e1\u5185\u7f6e\u51fd\u6570\u7684\u7528\u6cd5<\/li>\n<li>\u7406\u89e3\u51fd\u6570\u5f0f\u7f16\u7a0b\u6a21\u5f0f<\/li>\n<\/ul>\n<p>1\uff0ePython \u8fd0\u7b97\u7b26\u4e2d\u7528\u6765\u8ba1\u7b97\u6574\u5546\u7684\u662f<strong><em>\/\/<\/em><\/strong>\u3002<\/p>\n<p>2\uff0ePython \u8fd0\u7b97\u7b26\u4e2d\u7528\u6765\u8ba1\u7b97\u96c6\u5408\u5e76\u96c6\u7684\u662f<strong><em>|<\/em><\/strong>\u3002<\/p>\n<p>3\uff0ePython \u8fd0\u7b97\u7b26\u4e2d\u7528\u6765\u8ba1\u7b97\u96c6\u5408\u5dee\u96c6\u7684\u662f<strong><em>&#8211;<\/em><\/strong>\u3002<\/p>\n<p>4\uff0ePython \u8fd0\u7b97\u7b26\u4e2d\u7528\u6765\u8ba1\u7b97\u96c6\u5408\u4ea4\u96c6\u7684\u662f<strong><em>&amp;<\/em><\/strong>\u3002<\/p>\n<p>5\uff0e\u4f7f\u7528\u8fd0\u7b97\u7b26\u6d4b\u8bd5\u96c6\u5408 A \u662f\u5426\u4e3a\u96c6\u5408 B \u7684\u771f\u5b50\u96c6\u7684\u8868\u8fbe\u5f0f\u4e3a<strong><em>A&lt;B<\/em><\/strong>\u3002<\/p>\n<p>6\uff0ePython 3.x \u8bed\u53e5 print(1, 2, 3, sep=&#8217;:&#8217;)\u7684\u8f93\u51fa\u7ed3\u679c\u4e3a<strong><em>1:2:3<\/em><\/strong>\u3002<\/p>\n<p>7\uff0ePython \u5185\u7f6e\u51fd\u6570<strong><em>len()<\/em><\/strong>\u53ef\u4ee5\u8fd4\u56de\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u3001\u96c6\u5408\u3001\u5b57\u7b26\u4e32\u4ee5\u53ca range \u5bf9\u8c61 \u2022 \u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/p>\n<p>8\uff0e\u8868\u8fbe\u5f0f sum(map(int, str(123456)))\u7684\u503c\u4e3a<strong>__<\/strong>21<strong>__<\/strong>\u3002<\/p>\n<p>9\uff0e\u8868\u8fbe\u5f0f eval(&#8216;3+2&#8217;+&#8217;*2&#8217;)\u7684\u503c\u4e3a_<strong>7<strong>__<\/strong><\/strong>\u3002<\/p>\n<p>10\uff0e\u8868\u8fbe\u5f0f-17 \/\/ 4 \u7684\u503c\u4e3a<strong><em>-5<\/em><\/strong>\u3002<\/p>\n<p>11\uff0e\u8868\u8fbe\u5f0f&#8217;3&#8242; &gt; &#8216;111&#8217;\u7684\u503c\u4e3a<strong><em>True<\/em><\/strong>\u3002<\/p>\n<p>12\uff0e\u8868\u8fbe\u5f0f{1, 2, 3} &lt; {1, 2, 4}\u7684\u503c\u4e3a<strong><strong>_False___<\/strong><\/strong>\u3002<\/p>\n<p>13\uff0e\u8868\u8fbe\u5f0f max([{1}, {2}, {3}])\u7684\u503c\u4e3a_<strong><strong>{3}__<\/strong><\/strong>\u3002<\/p>\n<p>14\uff0e\u8868\u8fbe\u5f0f sorted([1,2,3], reverse=True) == reversed([1,2,3])\u7684\u503c\u4e3a<strong><em>False<\/em><\/strong>\u3002<\/p>\n<p>15\uff0e\u8868\u8fbe\u5f0f list(filter(None, [-3, 0, 3]))\u7684\u503c\u4e3a<strong>__<\/strong>[-3,3]<strong>__<\/strong>\u3002<\/p>\n<p>16\uff0e\u5224\u65ad\u5bf9\u9519\uff1a\u8868\u8fbe\u5f0f len(zip([1,2,3], &#8216;abcdefg&#8217;))\u7684\u503c\u4e3a 3\u3002\uff08 \u5bf9\uff09<\/p>\n<p>17\uff0e\u5224\u65ad\u5bf9\u9519\uff1a\u5df2\u77e5 x = 3\uff0c\u90a3\u4e48\u8d4b\u503c\u8bed\u53e5 x = &#8216;abcedfg&#8217;\u662f\u65e0\u6cd5\u6b63 \u5e38\u6267\u884c\u7684\u3002\uff08 \u9519\uff09<\/p>\n<p>18\uff0e\u5224\u65ad\u5bf9\u9519\uff1a0o12f \u662f\u5408\u6cd5\u7684\u516b\u8fdb\u5236\u6570\u5b57\u3002\uff08 \u9519\uff09<\/p>\n<p>19\uff0e\u5224\u65ad\u5bf9\u9519\uff1ax = 9999**9999 \u8fd9\u6837\u7684\u8bed\u53e5\u5728 Python \u4e2d\u65e0\u6cd5\u8fd0\u884c\uff0c \u56e0\u4e3a\u6570\u5b57\u592a\u5927\u4e86\u8d85\u51fa\u4e86\u6574\u578b\u53d8\u91cf\u7684\u8868\u793a\u8303\u56f4\u3002\uff08 \u9519\uff09<\/p>\n<p>20\uff0e\u5224\u65ad\u5bf9\u9519\uff1aPython \u53d8\u91cf\u4f7f\u7528\u524d\u5fc5\u987b\u5148\u58f0\u660e\uff0c\u5e76\u4e14\u4e00\u65e6\u58f0\u660e\u5c31 \u4e0d\u80fd\u5728\u5f53\u524d\u4f5c\u7528\u57df\u5185\u6539\u53d8\u5176\u7c7b\u578b\u4e86\u3002\uff08 \u9519\uff09<\/p>\n<p>21\uff0e\u5df2\u77e5 x = {1, 2, 3}\uff0c\u90a3\u4e48\u53ef\u4ee5\u8ba1\u7b97 3*x \u7684\u503c\u5417\uff1f\u5982\u679c\u53ef\u4ee5\uff0c\u503c \u662f\u4ec0\u4e48\uff1f\u5982\u679c\u4e0d\u53ef\u4ee5\uff0c\u8bf7\u89e3\u91ca\u539f\u56e0\u3002<\/p>\n<p>*<em>\u4e0d\u53ef\u4ee5\uff0c\u96c6\u5408\u4e0d\u652f\u6301\u4e58\u6cd5\u8fd0\u7b97\u7b26<\/em>\uff0c\u5217\u8868\uff0c\u5143\u7ec4\uff0c\u5b57\u7b26\u4e32\u652f\u6301\u91cd\u590d\u4e58\u6cd5\uff0c\u96c6\u5408\u65e0\u8be5\u8fd0\u7b97\u89c4\u5219\uff0c\u4f1a\u62a5\u9519**<\/p>\n<p>22\uff0e\u5df2\u77e5 x = zip(&#8216;abc&#8217;, &#8216;1234&#8217;)\uff0c\u90a3\u4e48\u8fde\u7eed\u4e24\u6b21\u6267\u884c list(x)\u4f1a\u5f97\u5230\u540c \u6837\u7684\u7ed3\u679c\u5417\uff1f\u5982\u679c\u80fd\uff0c\u7ed3\u679c\u662f\u4ec0\u4e48\uff1f\u5982\u679c\u4e0d\u80fd\uff0c\u8bf7\u89e3\u91ca\u539f\u56e0\u3002<\/p>\n<p><strong>\u4e0d\u4f1a\u5f97\u5230\u540c\u6837\u7ed3\u679c\uff0c\u56e0\u4e3azip\uff08\uff09\u8fd4\u56de\u7684\u662f\u8fed\u4ee3\u5668\uff0c\u8fed\u4ee3\u5668\u53ea\u80fd\u904d\u5386\u4e00\u6b21\uff1b\u7b2c\u4e00\u6b21list(x)\u904d\u5386\u5b8c\u540e\u8fed\u4ee3\u5668\u8017\u5c3d\uff0c\u7b2c\u4e8c\u6b21\u518dlist\uff08x\uff09\u5f97\u5230\u7a7a\u5217\u8868<\/strong><\/p>\n<h2>\u7b2c3\u7ae0 Python\u5e8f\u5217\u7ed3\u6784<\/h2>\n<ul>\n<li>\u638c\u63e1\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u3001\u96c6\u5408\u7684\u7c7b\u578b\u7279\u70b9\u548c\u81ea\u8eab\u63d0\u4f9b\u7684\u65b9\u6cd5<\/li>\n<li>\u638c\u63e1\u8fd0\u7b97\u7b26\u548c\u5185\u7f6e\u51fd\u6570\u5bf9\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u3001\u96c6\u5408\u7684\u64cd\u4f5c<\/li>\n<li>\u7406\u89e3\u5217\u8868\u63a8\u5bfc\u5f0f\u3001\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u7684\u5de5\u4f5c\u539f\u7406 \u2022 \u638c\u63e1\u5207\u7247\u64cd\u4f5c<\/li>\n<li>\u638c\u63e1\u5e8f\u5217\u89e3\u5305\u7684\u7528\u6cd5<\/li>\n<\/ul>\n<p>\u7f16\u5199\u7a0b\u5e8f\uff0c\u751f\u6210\u5305\u542b20 \u4e2a\u968f\u673a\u6570\u7684\u5217\u8868\uff0c\u7136\u540e\u5c06\u524d10 \u4e2a\u5143 \u7d20\u5347\u5e8f\u6392\u5217\uff0c\u540e10 \u4e2a\u5143\u7d20\u964d\u5e8f\u6392\u5217\uff0c\u5e76\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n<pre><code class=\"language-python\">import random\n\n# \u751f\u621020\u4e2a1~100\u7684\u968f\u673a\u6574\u6570\nnums = [random.randint(1, 100) for _ in range(20)]\nprint(\"\u539f\u59cb\u5217\u8868\uff1a\", nums)\n\n# \u5207\u5206\u524d10\u3001\u540e10\u4e2a\u5143\u7d20\nfirst = nums[:10]\nlast = nums[10:]\n\n# \u524d10\u5347\u5e8f\uff0c\u540e10\u964d\u5e8f\nfirst.sort()\nlast.sort(reverse=True)\n\n# \u5408\u5e76\nres = first + last\nprint(\"\u5904\u7406\u540e\u5217\u8868\uff1a\", res)<\/code><\/pre>\n<p>\u7f16\u5199\u7a0b\u5e8f\uff0c\u8ba9\u7528\u6237\u5728\u952e\u76d8\u4e0a\u8f93\u5165\u4e00\u4e2a\u5305\u542b\u82e5\u5e72\u6574\u6570\u7684\u5217\u8868\uff0c \u8f93\u51fa\u7ffb\u8f6c\u540e\u7684\u5217\u8868\u3002<\/p>\n<pre><code class=\"language-python\"># \u8f93\u5165\u793a\u4f8b\uff1a1 2 3 4 5\ns = input(\"\u8bf7\u8f93\u5165\u82e5\u5e72\u6574\u6570\uff0c\u4ee5\u7a7a\u683c\u5206\u9694\uff1a\")\n# \u8f6c\u4e3a\u6574\u6570\u5217\u8868\nlst = list(map(int, s.split()))\n\n# \u5217\u8868\u7ffb\u8f6c\nlst_rev = lst[::-1]\nprint(\"\u7ffb\u8f6c\u540e\u7684\u5217\u8868\uff1a\", lst_rev)<\/code><\/pre>\n<h2>\u7b2c 4 \u7ae0 \u9009\u62e9\u7ed3\u6784\u4e0e\u5faa\u73af\u7ed3\u6784<\/h2>\n<ul>\n<li>\u7406\u89e3\u6761\u4ef6\u8868\u8fbe\u5f0f\u4e0e True\/False \u7684\u7b49\u4ef7\u5173\u7cfb<\/li>\n<li>\u719f\u7ec3\u8fd0\u7528\u5e38\u89c1\u9009\u62e9\u7ed3\u6784<\/li>\n<li>\u719f\u7ec3\u8fd0\u7528 for \u5faa\u73af\u548c while \u5faa\u73af<\/li>\n<li>\u7406\u89e3\u5e26 else \u7406\u89e3 break \u5b50\u53e5\u7684\u5faa\u73af\u7ed3\u6784\u6267\u884c\u8fc7\u7a0b<\/li>\n<li>\u7406\u89e3 break \u548c continue \u8bed\u53e5\u5728\u5faa\u73af\u4e2d\u7684\u4f5c\u7528<\/li>\n<\/ul>\n<p>\u7f16\u5199\u7a0b\u5e8f\uff0c\u5b9e\u73b0\u4eba\u673a\u5bf9\u6218\u7684\u5c3c\u59c6\u6e38\u620f\u3002 \u95ee\u9898\u63cf\u8ff0\uff1a\u5c3c\u59c6\u6e38\u620f\u662f\u8fd9\u6837\u4e00\u4e2a\u6e38\u620f\uff1a\u5047\u8bbe\u6709\u4e00\u5806\u7269\u54c1\uff0c\u8ba1\u7b97\u673a\u548c\u4eba\u7c7b\u73a9\u5bb6\u8f6e\u6d41\u4ece\u5176\u4e2d\u62ff\u8d70 \u4e00\u90e8\u5206\u3002\u5728\u6bcf\u4e00\u6b65\u4e2d\uff0c\u4eba\u6216\u8ba1\u7b97\u673a\u53ef\u4ee5\u81ea\u7531\u9009\u62e9\u62ff\u8d70\u591a\u5c11\u7269\u54c1\uff0c\u4f46\u662f\u5fc5\u987b\u81f3\u5c11\u62ff\u8d70\u4e00\u4e2a\u5e76\u4e14 \u6700\u591a\u53ea\u80fd\u62ff\u8d70\u4e00\u534a\u7269\u54c1\uff0c\u7136\u540e\u8f6e\u5230\u4e0b\u4e00\u4e2a\u73a9\u5bb6\u3002\u62ff\u8d70\u6700\u540e\u4e00\u4e2a\u7269\u54c1\u7684\u73a9\u5bb6\u8f93\u6389\u6e38\u620f\u3002<\/p>\n<pre><code class=\"language-python\">from random import randint\nn=int(input('\u8bf7\u8f93\u5165\u4e00\u4e2a\u6b63\u6574\u6570:'))\nwhile n&gt; 1:\n    # \u4eba\u7c7b\u73a9\u5bb6\u5148\u8d70\n    print(\"\u8be5\u4f60\u62ff\u4e86\uff0c\u73b0\u5728\u5269\u4f59\u7269\u54c1\u6570\u4e3a:{0}\".format(n))\n    #\u786e\u4fdd\u4eba\u7c7b\u73a9\u5bb6\u8f93\u5165\u5408\u6cd5\u6574\u6570\u503c\n    while True:\n        try:\n            num=int(input('\u8f93\u5165\u4f60\u8981\u62ff\u8d70\u7684\u7269\u54c1\u6570\u91cf:'))\n            #\u786e\u4fdd\u4f60\u62ff\u8d70\u7684\u7269\u54c1\u6570\u91cf\u4e0d\u8d85\u8fc7\u4e00\u534a\n            assert 1 &lt;= num &lt;= n\/\/2\n            break #\u4f5c\u7528:\u8f93\u5165\u5408\u6cd5\u5219\u7ec8\u6b62whi1e\u5faa\u73af\n        except:\n            print('\u6700\u5c11\u5fc5\u987b\u62ff\u8d70\u4e00\u4e2a\uff0c\u6700\u591a\u53ef\u4ee5\u62ff\u8d70{0}\u4e2a'.format(n\/\/2))\n     n -= num\n     if n == 1:\n         print('\u606d\u559c\uff0c\u4f60\u8d62\u4e86!')\n         break\n         #\u8ba1\u7b97\u673a\u73a9\u5bb6\u968f\u673a\u62ff\u8d70\u4e00\u4e9b\uff0crandint\u7528\u6765\u751f\u6210\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4e00\u4e2a\u968f\u673a\u6570\n         n -= randint(1, n\/\/2)\n     else:\n        print('\u54c8\u54c8\uff0c\u4f60\u8f93\u4e86\u3002')<\/code><\/pre>\n<h2>\u7b2c 5 \u7ae0 \u51fd\u6570<\/h2>\n<ul>\n<li>\u638c\u63e1\u51fd\u6570\u5b9a\u4e49\u548c\u8c03\u7528\u7684\u7528\u6cd5<\/li>\n<li>\u7406\u89e3\u9012\u5f52\u51fd\u6570\u7684\u6267\u884c\u8fc7\u7a0b<\/li>\n<li>\u638c\u63e1\u4f4d\u7f6e\u53c2\u6570\u3001\u5173\u952e\u53c2\u6570\u3001\u9ed8\u8ba4\u503c\u53c2\u6570\u548c\u4e0d\u5b9a\u957f\u5ea6\u53c2\u6570\u7684\u7528\u6cd5<\/li>\n<li>\u7406\u89e3\u51fd\u6570\u8c03\u7528\u65f6\u53c2\u6570\u4f20\u9012\u7684\u5e8f\u5217\u89e3\u5305\u7528\u6cd5<\/li>\n<li>\u7406\u89e3\u53d8\u91cf\u4f5c\u7528\u57df<\/li>\n<li>\u638c\u63e1 lambda \u8868\u8fbe\u5f0f\u7684\u5b9a\u4e49\u4e0e\u7528\u6cd5<\/li>\n<li>\u7406\u89e3\u751f\u6210\u5668\u51fd\u6570\u5de5\u4f5c\u539f\u7406<\/li>\n<\/ul>\n<p>1.\u7f16\u5199\u51fd\u6570\uff0c\u6a21\u62df\u5185\u7f6e\u51fd\u6570 all()\u7684\u529f\u80fd<\/p>\n<pre><code class=\"language-python\">def my_all(iterable):\n    # \u904d\u5386\u6bcf\u4e00\u4e2a\u5143\u7d20\n    for item in iterable:\n        # \u53ea\u8981\u6709\u4e00\u4e2a\u5143\u7d20\u4e3a\u5047\uff0c\u7acb\u5373\u8fd4\u56de False\n        if not item:\n            return False\n    # \u5168\u90e8\u4e3a\u771f \u6216 \u7a7a\u8fed\u4ee3\u5668 \u2192 \u8fd4\u56de True\n    return True<\/code><\/pre>\n<p>2.\u7f16\u5199\u51fd\u6570\uff0c\u6a21\u62df\u5185\u7f6e\u51fd\u6570 any()\u7684\u529f\u80fd<\/p>\n<pre><code class=\"language-python\">def my_any(iterable):\n    # \u904d\u5386\u6bcf\u4e00\u4e2a\u5143\u7d20\n    for item in iterable:\n        # \u53ea\u8981\u6709\u4e00\u4e2a\u5143\u7d20\u4e3a\u771f\uff0c\u7acb\u5373\u8fd4\u56de True\n        if item:\n            return True\n    # \u5168\u90e8\u4e3a\u5047 \u6216 \u7a7a\u8fed\u4ee3\u5668 \u2192 \u8fd4\u56de False\n    return False<\/code><\/pre>\n<p>3.\u5199\u51fa\u4e0b\u9762\u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c<\/p>\n<pre><code class=\"language-python\">def Sum(a, b=3, c=5):\n    return sum([a, b, c])\nprint(Sum(a=8, c=2))\nprint(Sum(8))\nprint(Sum(8,2))<\/code><\/pre>\n<p><strong>13 16 15<\/strong><\/p>\n<p>4.\u7f16\u5199\u51fd\u6570\uff0c\u6a21\u62df\u6807\u51c6\u5e93 itertools \u4e2d cycle() \u51fd\u6570\u7684\u529f\u80fd\uff08\u65e0\u9650\u5faa\u73af\u8fed\u4ee3\u7ed9\u5b9a\u7684\u53ef\u8fed\u4ee3\u5bf9\u8c61\u3002\uff09<\/p>\n<pre><code class=\"language-python\">def myCycle(iterable):\n    temp = tuple(iterable)  # 1.\u5c06\u8f93\u5165\u8f6c\u6362\u4e3a\u5143\u7ec4\uff08\u5b58\u50a8\u526f\u672c\uff09\n    while True:             # 2.\u65e0\u9650\u5faa\u73af\n        for item in temp:   # 3.\u6bcf\u6b21\u5faa\u73af\u904d\u5386\u5143\u7ec4\n            yield item      # 4.\u9010\u4e2a\u751f\u6210\u5143\u7d20\n\nc = myCycle('Python\u5c0f\u5c4b')\nfor i in range(20):\n    print(next(c))<\/code><\/pre>\n<h2>\u7b2c 6 \u7ae0 \u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1<\/h2>\n<ul>\n<li>\u638c\u63e1\u5b9a\u4e49\u7c7b\u7684\u8bed\u6cd5<\/li>\n<li>\u638c\u63e1\u521b\u5efa\u5bf9\u8c61\u7684\u8bed\u6cd5<\/li>\n<li>\u7406\u89e3\u6570\u636e\u6210\u5458\u4e0e\u6210\u5458\u65b9\u6cd5\u7684\u533a\u522b<\/li>\n<li>\u7406\u89e3\u79c1\u6709\u6210\u5458\u4e0e\u516c\u6709\u6210\u5458\u7684\u533a\u522b<\/li>\n<li>\u7406\u89e3\u5c5e\u6027\u7684\u5de5\u4f5c\u539f\u7406<\/li>\n<li>\u4e86\u89e3\u7ee7\u627f\u7684\u57fa\u672c\u6982\u5ff5<\/li>\n<li>\u4e86\u89e3\u7279\u6b8a\u65b9\u6cd5\u7684\u6982\u5ff5\u4e0e\u5de5\u4f5c\u539f\u7406<\/li>\n<\/ul>\n<p>1.\u5224\u65ad\u5bf9\u9519\uff1a Python \u8bed\u8a00\u4e2d\u5b9a\u4e49\u7c7b\u7684\u5c5e\u6027\u65f6\u53ea\u80fd\u5b9a\u4e49\u53ea\u8bfb\u5c5e\u6027\uff0c\u65e0\u6cd5\u5b9a\u4e49\u53ef\u4ee5 \u4fee\u6539\u548c\u5220\u9664 \u7684\u5c5e\u6027\u3002\uff08\u9519\uff09<\/p>\n<p>2.\u5224\u65ad\u5bf9\u9519\uff1a\u5b9a\u4e49\u7c7b\u65f6\u4e00\u822c\u628a\u6570\u636e\u6210\u5458\u5b9a\u4e49\u4e3a\u79c1\u6709\u7684\uff0c\u6210\u5458\u65b9\u6cd5\u5b9a\u4e49\u4e3a\u516c\u6709\u7684\uff0c \u4e0d\u80fd\u628a\u6210 \u5458\u65b9\u6cd5\u5b9a\u4e49\u4e3a\u79c1\u6709\u7684\u3002\uff08\u9519\uff09<\/p>\n<p>3.\u89e3\u91ca\u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\u4e2d\u5c01\u88c5\u3001\u7ee7\u627f\u3001\u591a\u6001\u7684\u6982\u5ff5\u3002<\/p>\n<blockquote><p><strong>\u5c01\u88c5<\/strong><\/p>\n<p>\u5c06<strong>\u6570\u636e\uff08\u5c5e\u6027\uff09<\/strong>\u548c**\u64cd\u4f5c\u6570\u636e\u7684\u65b9\u6cd5**\u6346\u7ed1\u5728\u7c7b\u4e2d\uff0c\u9690\u85cf\u5185\u90e8\u5b9e\u73b0\u7ec6\u8282\uff0c\u53ea\u5bf9\u5916\u63d0\u4f9b\u5fc5\u8981\u8bbf\u95ee\u63a5\u53e3\uff1b\u540c\u65f6\u53ef\u63a7\u5236\u8bbf\u95ee\u6743\u9650\uff08\u516c\u6709 \/ \u79c1\u6709\uff09\uff0c\u4fdd\u8bc1\u6570\u636e\u5b89\u5168\u3002<\/p>\n<p><strong>\u7ee7\u627f<\/strong><\/p>\n<p>\u5141\u8bb8\u5b9a\u4e49\u4e00\u4e2a\u65b0\u7c7b\uff08\u5b50\u7c7b\uff09\uff0c\u590d\u7528\u5df2\u6709\u7c7b\uff08\u7236\u7c7b\uff09\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u8fd8\u53ef\u4ee5\u6269\u5c55\u65b0\u529f\u80fd\u6216\u91cd\u5199\u539f\u6709\u65b9\u6cd5\uff0c\u5b9e\u73b0\u4ee3\u7801\u590d\u7528\u3002<\/p>\n<p><strong>\u591a\u6001<\/strong><\/p>\n<p>\u4e0d\u540c\u5b50\u7c7b\u7ee7\u627f\u540c\u4e00\u4e2a\u7236\u7c7b\uff0c<strong>\u91cd\u5199\u540c\u540d\u65b9\u6cd5<\/strong>\uff1b\u8c03\u7528\u540c\u4e00\u4e2a\u65b9\u6cd5\u65f6\uff0c\u4f1a\u6839\u636e<strong>\u5bf9\u8c61\u5b9e\u9645\u7c7b\u578b<\/strong>\u6267\u884c\u5bf9\u5e94\u5b50\u7c7b\u7684\u5b9e\u73b0\uff0c\u4e00\u4e2a\u63a5\u53e3\u591a\u79cd\u8868\u73b0\u5f62\u5f0f\u3002<\/p><\/blockquote>\n<p>4.\u8bbe\u8ba1\u5e76\u5b9e\u73b0\u4e00\u4e2a\u6570\u7ec4\u7c7b\uff0c\u8981\u6c42\u80fd\u591f\u628a\u5305\u542b\u6570\u5b57\u7684\u5217\u8868\u3001\u5143\u7ec4\u6216 \u4e3a\u6570\u7ec4\uff0c \u5e76\u80fd\u591f\u4fee\u6539\u6570\u7ec4\u4e2d\u6307\u5b9a\u4f4d\u7f6e\u4e0a\u7684\u5143\u7d20\u503c\u3002<\/p>\n<pre><code class=\"language-python\">class MyArray:\n    # \u521d\u59cb\u5316\uff1a\u63a5\u6536\u5217\u8868\/\u5143\u7ec4\n    def __init__(self, data):\n        # \u8f6c\u4e3a\u5185\u90e8\u5217\u8868\uff0c\u65b9\u4fbf\u4fee\u6539\n        self._arr = list(data)\n\n    # \u4fee\u6539\u6307\u5b9a\u4f4d\u7f6e\u5143\u7d20\n    def set_item(self, index, value):\n        # \u7b80\u5355\u4e0b\u6807\u5408\u6cd5\u6027\u5224\u65ad\n        if 0 &lt;= index &lt; len(self._arr):\n            self._arr[index] = value\n        else:\n            print(\"\u4e0b\u6807\u8d8a\u754c\")\n\n    # \u83b7\u53d6\u6307\u5b9a\u4f4d\u7f6e\u5143\u7d20\n    def get_item(self, index):\n        if 0 &lt;= index &lt; len(self._arr):\n            return self._arr[index]\n        else:\n            return \"\u4e0b\u6807\u8d8a\u754c\"\n\n    # \u6253\u5370\u6570\u7ec4\n    def show(self):\n        print(self._arr)\n\n# \u6d4b\u8bd5\u4ee3\u7801\nif __name__ == \"__main__\":\n    # \u7528\u5143\u7ec4\u521b\u5efa\u6570\u7ec4\n    a1 = MyArray((1,2,3,4,5))\n    a1.show()\n    # \u4fee\u6539\u4e0b\u68072\u7684\u5143\u7d20\n    a1.set_item(2, 99)\n    a1.show()\n\n    # \u7528\u5217\u8868\u521b\u5efa\u6570\u7ec4\n    a2 = MyArray([10,20,30])\n    a2.show()<\/code><\/pre>\n<h2>\u7b2c 7 \u7ae0 \u5b57\u7b26\u4e32<\/h2>\n<ul>\n<li>\u4e86\u89e3 ASCII \u3001 UTF-8 \u3001 GBK \u3001 CP936 \u7b49\u5e38\u89c1\u5b57\u7b26\u7f16\u7801\u683c\u5f0f<\/li>\n<li>\u4e86\u89e3\u8f6c\u4e49\u5b57\u7b26\u548c\u539f\u59cb\u5b57\u7b26\u4e32\u7684\u6982\u5ff5\u548c\u7528\u6cd5<\/li>\n<li>\u719f\u7ec3\u8fd0\u7528\u5b57\u7b26\u4e32\u5e38\u7528\u65b9\u6cd5<\/li>\n<li>\u719f\u7ec3\u8fd0\u7528\u8fd0\u7b97\u7b26\u548c\u5185\u7f6e\u51fd\u6570\u5bf9\u5b57\u7b26\u4e32\u7684\u64cd\u4f5c<\/li>\n<li>\u4e86\u89e3\u4e2d\u6587\u5206\u8bcd\u548c\u62fc\u97f3\u5904\u7406\u7684\u6269\u5c55\u5e93\u57fa\u672c\u7528\u6cd5<\/li>\n<\/ul>\n<p>1.\u8868\u8fbe\u5f0flen(&#8216;::&#8217;.join([&#8216;a&#8217;,&#8217;b&#8217;,&#8217;c&#8217;])) \u7684\u503c\u4e3a<strong>__<\/strong>7_<strong>__<\/strong>\u3002<\/p>\n<p>2.\u8868\u8fbe\u5f0f&#8217;123abc&#8217;.islower()\u7684\u503c\u4e3a<strong><strong><em>____True<\/em><\/strong><\/strong>\u3002<\/p>\n<p>3.\u8868\u8fbe\u5f0f&#8217;abc&#8217; in &#8216;abdc&#8217;\u7684\u503c\u4e3a<strong>__<\/strong>False_<strong>__<\/strong>\u3002<\/p>\n<p>4.\u7f16\u5199\u51fd\u6570\uff0c\u63a5\u6536\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u8fd4\u56de\u5176\u4e2d\u6700\u957f\u7684\u6570\u5b57\u5b50\u4e32\u3002<\/p>\n<pre><code class=\"language-python\">def longest_digit_substring(s):\n    max_sub = \"\"    # \u5b58\u50a8\u6700\u957f\u6570\u5b57\u5b50\u4e32\n    current = \"\"    # \u5b58\u50a8\u5f53\u524d\u6b63\u5728\u62fc\u63a5\u7684\u6570\u5b57\u5b50\u4e32\n\n    for ch in s:\n        if ch.isdigit():  # \u5982\u679c\u662f\u6570\u5b57\n            current += ch\n            # \u5982\u679c\u5f53\u524d\u66f4\u957f\uff0c\u66f4\u65b0\u6700\u957f\n            if len(current) &gt; len(max_sub):\n                max_sub = current\n        else:             # \u4e0d\u662f\u6570\u5b57\uff0c\u91cd\u7f6e\u5f53\u524d\n            current = \"\"\n\n    return max_sub<\/code><\/pre>\n<p>5.\u7f16\u5199\u51fd\u6570\uff0c\u63a5\u6536\u4e00\u53e5\u82f1\u6587\uff0c\u628a\u5176\u4e2d\u7684\u5355\u8bcd\u5012\u7f6e\uff0c\u6807\u70b9\u7b26\u53f7\u4e0d\u5012\u7f6e\uff0c\u4f8b\u5982 I like Beijing. \u7ecf\u8fc7\u51fd\u6570\u540e\u53d8\u4e3a\uff1a Beijing. like I<\/p>\n<pre><code class=\"language-python\">def reverse_words(sentence):\n    words = sentence.split()    # \u6309\u7a7a\u683c\u5206\u5272\u6210\u5355\u8bcd\u5217\u8868\n    words_reversed = words[::-1] # \u53cd\u8f6c\u5217\u8868\n    return ' '.join(words_reversed) # \u7528\u7a7a\u683c\u8fde\u63a5<\/code><\/pre>\n<h2>Python \u5b57\u7b26\u4e32\u65b9\u6cd5<\/h2>\n<h4>1. \u5927\u5c0f\u5199\u8f6c\u6362<\/h4>\n<ul>\n<li><code>s.upper()<\/code>\uff1a\u5168\u90e8\u8f6c\u5927\u5199<\/li>\n<li><code>s.lower()<\/code>\uff1a\u5168\u90e8\u8f6c\u5c0f\u5199<\/li>\n<li><code>s.title()<\/code>\uff1a\u6bcf\u4e2a\u5355\u8bcd\u9996\u5b57\u6bcd\u5927\u5199<\/li>\n<li><code>s.capitalize()<\/code>\uff1a\u9996\u5b57\u6bcd\u5927\u5199\uff0c\u5176\u4f59\u5c0f\u5199<\/li>\n<li><code>s.swapcase()<\/code>\uff1a\u5927\u5c0f\u5199\u4e92\u6362<\/li>\n<\/ul>\n<h4>2. \u5224\u65ad\u7c7b\uff08\u8fd4\u56de\u5e03\u5c14\u503c\uff09<\/h4>\n<ul>\n<li><code>s.isdigit()<\/code>\uff1a\u662f\u5426\u5168\u4e3a\u6570\u5b57<\/li>\n<li><code>s.isalpha()<\/code>\uff1a\u662f\u5426\u5168\u4e3a\u5b57\u6bcd<\/li>\n<li><code>s.isalnum()<\/code>\uff1a\u662f\u5426\u5b57\u6bcd + \u6570\u5b57\u7ec4\u6210<\/li>\n<li><code>s.islower()<\/code>\uff1a\u5b57\u6bcd\u662f\u5426\u5168\u5c0f\u5199<\/li>\n<li><code>s.isupper()<\/code>\uff1a\u5b57\u6bcd\u662f\u5426\u5168\u5927\u5199<\/li>\n<li><code>s.isspace()<\/code>\uff1a\u662f\u5426\u5168\u4e3a\u7a7a\u767d\u5b57\u7b26<\/li>\n<li><code>s.startswith(x)<\/code>\uff1a\u662f\u5426\u4ee5 x \u5f00\u5934<\/li>\n<li><code>s.endswith(x)<\/code>\uff1a\u662f\u5426\u4ee5 x \u7ed3\u5c3e<\/li>\n<\/ul>\n<h4>3. \u67e5\u627e\u4e0e\u7edf\u8ba1<\/h4>\n<ul>\n<li><code>s.find(x)<\/code>\uff1a\u4ece\u5de6\u627e\u5b50\u4e32\uff0c\u627e\u4e0d\u5230\u8fd4\u56de &#8211; 1<\/li>\n<li><code>s.rfind(x)<\/code>\uff1a\u4ece\u53f3\u627e\u5b50\u4e32\uff0c\u627e\u4e0d\u5230\u8fd4\u56de &#8211; 1<\/li>\n<li><code>s.index(x)<\/code>\uff1a\u4ece\u5de6\u627e\uff0c\u627e\u4e0d\u5230\u62a5\u9519<\/li>\n<li><code>s.rindex(x)<\/code>\uff1a\u4ece\u53f3\u627e\uff0c\u627e\u4e0d\u5230\u62a5\u9519<\/li>\n<li><code>s.count(x)<\/code>\uff1a\u7edf\u8ba1\u5b50\u4e32\u51fa\u73b0\u6b21\u6570<\/li>\n<\/ul>\n<h4>4. \u5206\u5272\u4e0e\u62fc\u63a5<\/h4>\n<ul>\n<li><code>s.split()<\/code>\uff1a\u6309\u7a7a\u767d\u5206\u5272\u6210\u5217\u8868<\/li>\n<li><code>s.split(sep)<\/code>\uff1a\u6309\u6307\u5b9a\u5206\u9694\u7b26\u5206\u5272<\/li>\n<li><code>s.rsplit(sep)<\/code>\uff1a\u4ece\u53f3\u5206\u5272<\/li>\n<li><code>s.join(iter)<\/code>\uff1a\u7528\u5f53\u524d\u5b57\u7b26\u4e32\u8fde\u63a5\u53ef\u8fed\u4ee3\u5bf9\u8c61<\/li>\n<\/ul>\n<h4>5. \u66ff\u6362\u4e0e\u5220\u9664<\/h4>\n<ul>\n<li><code>s.replace(old,new)<\/code>\uff1a\u66ff\u6362\u5b50\u4e32<\/li>\n<li><code>s.strip()<\/code>\uff1a\u9996\u5c3e\u7a7a\u767d\u53bb\u9664<\/li>\n<li><code>s.lstrip()<\/code>\uff1a\u53bb\u9664\u5de6\u4fa7\u7a7a\u767d<\/li>\n<li><code>s.rstrip()<\/code>\uff1a\u53bb\u9664\u53f3\u4fa7\u7a7a\u767d<\/li>\n<\/ul>\n<h4>6. \u5bf9\u9f50\u586b\u5145<\/h4>\n<ul>\n<li><code>s.center(n)<\/code>\uff1a\u5c45\u4e2d\u5bf9\u9f50\uff0c\u603b\u957f\u5ea6 n<\/li>\n<li><code>s.ljust(n)<\/code>\uff1a\u5de6\u5bf9\u9f50<\/li>\n<li><code>s.rjust(n)<\/code>\uff1a\u53f3\u5bf9\u9f50<\/li>\n<li><code>s.zfill(n)<\/code>\uff1a\u5de6\u4fa7\u8865 0 \u5230\u6307\u5b9a\u957f\u5ea6<\/li>\n<\/ul>\n<h4>7. \u5176\u4ed6\u5e38\u7528<\/h4>\n<ul>\n<li><code>len(s)<\/code>\uff1a\u8fd4\u56de\u5b57\u7b26\u4e32\u957f\u5ea6<\/li>\n<li><code>s.format()<\/code>\uff1a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/li>\n<li><code>s.eval()<\/code>\uff1a\u6267\u884c\u5b57\u7b26\u4e32\u8868\u8fbe\u5f0f<\/li>\n<\/ul>\n<h2>find \/rfind\/index \/sort \u7528\u6cd5<\/h2>\n<h4>\u4e00\u3001\u5b57\u7b26\u4e32\uff1afind\u3001rfind\u3001index<\/h4>\n<h5>1. <code>s.find(sub)<\/code><\/h5>\n<ul>\n<li>\u529f\u80fd\uff1a<strong>\u4ece\u5de6\u5411\u53f3<\/strong>\u67e5\u627e\u5b50\u4e32\u4e0b\u6807<\/li>\n<li>\u627e\u5230\uff1a\u8fd4\u56de<strong>\u8d77\u59cb\u7d22\u5f15<\/strong><\/li>\n<li>\u627e\u4e0d\u5230\uff1a\u8fd4\u56de <strong>-1<\/strong><\/li>\n<li>\u8bed\u6cd5\uff1a<code>s.find(\u5b50\u4e32, \u8d77\u59cb\u4f4d\u7f6e, \u7ed3\u675f\u4f4d\u7f6e)<\/code><\/li>\n<\/ul>\n<h5>2. <code>s.rfind(sub)<\/code><\/h5>\n<ul>\n<li>\u529f\u80fd\uff1a<strong>\u4ece\u53f3\u5411\u5de6<\/strong>\u67e5\u627e\u5b50\u4e32\u6700\u540e\u4e00\u6b21\u51fa\u73b0\u4f4d\u7f6e<\/li>\n<li>\u627e\u5230\uff1a\u8fd4\u56de<strong>\u6700\u540e\u4e00\u6b21\u8d77\u59cb\u7d22\u5f15<\/strong><\/li>\n<li>\u627e\u4e0d\u5230\uff1a\u8fd4\u56de <strong>-1<\/strong><\/li>\n<\/ul>\n<h5>3. <code>s.index(sub)<\/code><\/h5>\n<ul>\n<li>\u548c <code>find<\/code> \u51e0\u4e4e\u4e00\u6837\uff0c<strong>\u4ece\u5de6\u627e<\/strong><\/li>\n<li>\u533a\u522b\uff1a<strong>\u627e\u4e0d\u5230\u76f4\u63a5\u62a5\u9519<\/strong>\uff0c\u4e0d\u8fd4\u56de &#8211; 1<\/li>\n<li><code>rindex<\/code>\uff1a\u4ece\u53f3\u627e\uff0c\u627e\u4e0d\u5230\u4e5f\u62a5\u9519<\/li>\n<\/ul>\n<pre><code class=\"language-python\">s = \"abcab\"\nprint(s.find(\"ab\"))    # 0\nprint(s.rfind(\"ab\"))   # 3\nprint(s.index(\"ab\"))   # 0<\/code><\/pre>\n<h3>\u4e8c\u3001\u5217\u8868\uff1asort<\/h3>\n<h5><code>lst.sort()<\/code><\/h5>\n<ul>\n<li><strong>\u539f\u5730\u6392\u5e8f<\/strong>\uff0c\u76f4\u63a5\u4fee\u6539\u539f\u5217\u8868\uff0c<strong>\u65e0\u8fd4\u56de\u503c<\/strong><\/li>\n<li>\u9ed8\u8ba4\uff1a<strong>\u5347\u5e8f<\/strong><\/li>\n<li><code>lst.sort(reverse=True)<\/code> \u964d\u5e8f<\/li>\n<li>\u652f\u6301 <code>key=<\/code> \u81ea\u5b9a\u4e49\u6392\u5e8f\u89c4\u5219<\/li>\n<\/ul>\n<pre><code class=\"language-python\">lst = [3,1,2]\nlst.sort()          # \u5347\u5e8f [1,2,3]\nlst.sort(reverse=True)  # \u964d\u5e8f [3,2,1]<\/code><\/pre>\n<h1>\u5b57\u7b26\u4e32 split () \u5207\u5272\u7ed3\u679c<\/h1>\n<h2>1. \u57fa\u7840\u5f62\u6001<\/h2>\n<p><code>split()<\/code> \u5207\u5272\u5b8c<strong>\u6c38\u8fdc\u8fd4\u56de\uff1a\u5217\u8868\uff08list\uff09<\/strong>\uff0c\u91cc\u9762\u6bcf\u4e2a\u5143\u7d20\u662f<strong>\u5b50\u5b57\u7b26\u4e32<\/strong>\u3002<\/p>\n<h2>2. \u4e09\u79cd\u5e38\u7528\u7528\u6cd5<\/h2>\n<h3>\u2460 \u4e0d\u5e26\u53c2\u6570\uff1a<code>s.split()<\/code><\/h3>\n<p>\u6309<strong>\u4efb\u610f\u7a7a\u767d<\/strong>\uff08\u7a7a\u683c\u3001\u591a\u4e2a\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u6362\u884c\uff09\u5207\u5272\uff0c<strong>\u81ea\u52a8\u5ffd\u7565\u9996\u5c3e\u7a7a\u767d<\/strong>\uff0c\u8fde\u7eed\u7a7a\u767d\u5f53\u4e00\u4e2a\u5206\u9694\u3002<\/p>\n<pre><code>s = \"I  love Python\"\nprint(s.split())\n# \u7ed3\u679c\uff1a['I', 'love', 'Python']<\/code><\/pre>\n<h3>\u2461 \u6307\u5b9a\u5206\u9694\u7b26\uff1a<code>s.split(',')<\/code><\/h3>\n<p>\u6309\u6307\u5b9a\u5b57\u7b26\u5207\u5272\uff0c<strong>\u4e0d\u5ffd\u7565\u9996\u5c3e\u3001\u8fde\u7eed\u5206\u9694\u4f1a\u51fa\u7a7a\u5b57\u7b26\u4e32<\/strong>\u3002<\/p>\n<pre><code>s = \"a,b,c\"\nprint(s.split(','))\n# \u7ed3\u679c\uff1a['a', 'b', 'c']<\/code><\/pre>\n<h3>\u2462 \u5e26\u6700\u5927\u5206\u5272\u6b21\u6570\uff1a<code>s.split(' ', 2)<\/code><\/h3>\n<p>\u53ea\u5207\u524d 2 \u6b21\uff0c\u540e\u9762\u6574\u4f53\u5f53\u6210\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n<h2>3. \u603b\u7ed3\u957f\u76f8<\/h2>\n<ul>\n<li>\u8fd4\u56de\u7c7b\u578b\uff1a<strong>\u5217\u8868 list<\/strong><\/li>\n<li>\u5217\u8868\u91cc\u7684\u6bcf\u4e00\u9879\uff1a<strong>\u5b57\u7b26\u4e32 str<\/strong><\/li>\n<li>\u65e0\u53c2 split\uff1a\u5e72\u51c0\u62c6\u5206\uff0c\u65e0\u7a7a\u5143\u7d20<\/li>\n<li>\u6709\u53c2 split\uff1a\u4e25\u683c\u6309\u5b57\u7b26\u5207\uff0c\u53ef\u80fd\u4ea7\u751f\u7a7a\u4e32<\/li>\n<\/ul>\n<h1>\u751f\u6210\u5668\u51fd\u6570 vs \u666e\u901a\u51fd\u6570\uff08return\uff09\u7684\u533a\u522b<\/h1>\n<hr \/>\n<h2>1. \u666e\u901a\u51fd\u6570\uff08\u7528 return\uff09<\/h2>\n<ul>\n<li>\u5173\u952e\u5b57\uff1a<strong>return<\/strong><\/li>\n<li>\u6267\u884c\uff1a<strong>\u8fd0\u884c \u2192 \u8fd4\u56de\u503c \u2192 \u51fd\u6570\u7ed3\u675f<\/strong><\/li>\n<li>\u7279\u70b9\uff1a<strong>\u4e00\u6b21\u6027\u8fd4\u56de\u6240\u6709\u7ed3\u679c<\/strong><\/li>\n<li>\u8fd4\u56de\u7c7b\u578b\uff1a<strong>\u666e\u901a\u6570\u636e\uff08\u6570\u5b57\u3001\u5217\u8868\u3001\u5b57\u7b26\u4e32\u2026\uff09<\/strong><\/li>\n<\/ul>\n<pre><code>def func():\n    return [1,2,3]<\/code><\/pre>\n<hr \/>\n<h2>2. \u751f\u6210\u5668\u51fd\u6570\uff08\u7528 yield\uff09<\/h2>\n<ul>\n<li>\u5173\u952e\u5b57\uff1a<strong>yield<\/strong><\/li>\n<li>\u6267\u884c\uff1a<strong>\u6682\u505c \u2192 \u8fd4\u56de\u4e00\u4e2a\u503c \u2192 \u4e0b\u6b21\u7ee7\u7eed\u4ece\u6682\u505c\u5904\u8fd0\u884c<\/strong><\/li>\n<li>\u7279\u70b9\uff1a<strong>\u4e00\u6b21\u8fd4\u56de\u4e00\u4e2a\u503c\uff0c\u4e0d\u5360\u5185\u5b58\uff0c\u53ef\u65e0\u9650\u8fed\u4ee3<\/strong><\/li>\n<li>\u8fd4\u56de\u7c7b\u578b\uff1a<strong>\u751f\u6210\u5668\uff08\u8fed\u4ee3\u5668\uff09<\/strong><\/li>\n<\/ul>\n<pre><code>def gen():\n    yield 1\n    yield 2\n    yield 3<\/code><\/pre>\n<hr \/>\n<h1>3. \u6838\u5fc3\u533a\u522b\uff08\u5fc5\u80cc\uff09<\/h1>\n<ol>\n<li><strong>return \u76f4\u63a5\u7ed3\u675f\u51fd\u6570\uff1byield \u6682\u505c\u51fd\u6570\uff0c\u4e0b\u6b21\u8fd8\u80fd\u7ee7\u7eed<\/strong><\/li>\n<li><strong>return \u8fd4\u56de\u4e00\u4e2a\u503c\uff1byield \u8fd4\u56de\u4e00\u4e2a\u751f\u6210\u5668\uff0c\u80fd\u4e0d\u65ad\u4ea7\u51fa\u503c<\/strong><\/li>\n<li><strong>return \u5360\u5185\u5b58\uff1byield \u51e0\u4e4e\u4e0d\u5360\u5185\u5b58\uff08\u9002\u5408\u5927\u6570\u636e \/ \u65e0\u9650\u5faa\u73af\uff09<\/strong><\/li>\n<li><strong>\u666e\u901a\u51fd\u6570\u8c03\u7528\u5c31\u6267\u884c\uff1b\u751f\u6210\u5668\u51fd\u6570\u8c03\u7528\u4e0d\u6267\u884c\uff0c\u53ea\u8fd4\u56de\u751f\u6210\u5668\u5bf9\u8c61<\/strong><\/li>\n<li><strong>\u751f\u6210\u5668\u53ea\u80fd\u8fed\u4ee3\u4e00\u6b21\uff1b\u666e\u901a\u51fd\u6570\u53ef\u65e0\u9650\u8c03\u7528<\/strong><\/li>\n<\/ol>\n<hr \/>\n<h1>4. \u7701\u6d41<\/h1>\n<p><strong>return = \u4e00\u6b21\u6027\u4ea4\u5dee<\/strong><\/p>\n<p><strong>yield = \u5206\u6279\u4ea4\u8d27\uff0c\u968f\u7528\u968f\u53d6<\/strong><\/p>\n<h1>\u9762\u5411\u5bf9\u8c61\uff1a\u7c7b\u3001\u5bf9\u8c61\u3001\u6210\u5458\u3001\u79c1\u6709\u6210\u5458 \u8bbf\u95ee\u89c4\u5219<\/h1>\n<h2>1. \u57fa\u672c\u6982\u5ff5<\/h2>\n<ul>\n<li><strong>\u7c7b<\/strong>\uff1a\u6a21\u677f\u3001\u56fe\u7eb8\uff0c\u5b9a\u4e49\u5c5e\u6027\u548c\u65b9\u6cd5<\/li>\n<li><strong>\u5bf9\u8c61<\/strong>\uff1a\u6839\u636e\u7c7b\u521b\u5efa\u51fa\u6765\u7684\u5b9e\u4f8b\uff0c\u5177\u4f53\u4e2a\u4f53<\/li>\n<li><strong>\u6210\u5458<\/strong>\uff1a\u7c7b\u91cc\u7684<strong>\u5c5e\u6027\uff08\u53d8\u91cf\uff09+ \u65b9\u6cd5\uff08\u51fd\u6570\uff09<\/strong><\/li>\n<li><strong>\u79c1\u6709\u6210\u5458<\/strong>\uff1a\u4ee5<strong>\u53cc\u4e0b\u5212\u7ebf <code>__<\/code> \u5f00\u5934<\/strong>\u7684\u5c5e\u6027 \/ \u65b9\u6cd5<\/li>\n<\/ul>\n<h2>2. \u666e\u901a\u516c\u6709\u6210\u5458\uff08\u65e0\u4e0b\u5212\u7ebf \/ \u5355\u4e0b\u5212\u7ebf\uff09<\/h2>\n<p><strong>\u5728\u54ea\u90fd\u80fd\u8bbf\u95ee<\/strong><\/p>\n<ol>\n<li><strong>\u7c7b\u5185\u90e8<\/strong>\uff1a\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee<\/li>\n<li><strong>\u672c\u7c7b\u5bf9\u8c61<\/strong>\uff1a\u5916\u90e8 <code>\u5bf9\u8c61.\u6210\u5458<\/code> \u53ef\u76f4\u63a5\u8bbf\u95ee<\/li>\n<li><strong>\u5b50\u7c7b<\/strong>\uff1a\u53ef\u4ee5\u7ee7\u627f\u3001\u8bbf\u95ee<\/li>\n<li><strong>\u5176\u4ed6\u5730\u65b9<\/strong>\uff1a\u4e5f\u80fd\u76f4\u63a5\u8bbf\u95ee<\/li>\n<\/ol>\n<h2>3. \u79c1\u6709\u6210\u5458 <code>__xxx<\/code> \u8bbf\u95ee\u89c4\u5219\uff08\u91cd\u70b9\u5fc5\u80cc\uff09<\/h2>\n<h3>\u80fd\u8bbf\u95ee\u7684\u60c5\u51b5<\/h3>\n<ul>\n<li><strong>\u53ea\u80fd\u5728\u3010\u672c\u7c7b\u7684\u5185\u90e8\u65b9\u6cd5\u3011\u4e2d\u8bbf\u95ee<\/strong><\/li>\n<\/ul>\n<h3>\u4e0d\u80fd\u8bbf\u95ee\u7684\u60c5\u51b5<\/h3>\n<ol>\n<li><strong>\u7c7b\u5916\u90e8<\/strong>\uff1a\u5bf9\u8c61\u3002\u79c1\u6709\u6210\u5458 \u76f4\u63a5\u62a5\u9519<\/li>\n<li><strong>\u5b50\u7c7b\u5185\u90e8<\/strong>\uff1a<strong>\u4e0d\u80fd\u76f4\u63a5\u8bbf\u95ee<\/strong>\u7236\u7c7b\u79c1\u6709\u6210\u5458<\/li>\n<li><strong>\u5176\u4ed6\u4efb\u4f55\u5916\u90e8\u4ee3\u7801<\/strong>\uff1a\u90fd\u4e0d\u80fd\u8bbf\u95ee<\/li>\n<\/ol>\n<h2>4. \u5355\u4e0b\u5212\u7ebf <code>_xxx<\/code> \u8bf4\u660e<\/h2>\n<p>\u8bed\u6cd5\u4e0a<strong>\u4ecd\u53ef\u5916\u90e8\u8bbf\u95ee<\/strong>\uff0c\u53ea\u662f\u7f16\u7a0b\u7ea6\u5b9a\uff1a<strong>\u89c6\u4e3a\u79c1\u6709\uff0c\u5efa\u8bae\u4e0d\u8981\u5916\u90e8\u76f4\u63a5\u8c03\u7528<\/strong><\/p>\n<h2>5. \u603b\u7ed3<\/h2>\n<ul>\n<li>\u516c\u6709\u6210\u5458\uff1a<strong>\u5185\u5916\u3001\u5b50\u7c7b\u968f\u4fbf\u8bbf\u95ee<\/strong><\/li>\n<li>\u79c1\u6709\u6210\u5458<code>__<\/code>\uff1a<strong>\u4ec5\u672c\u7c7b\u5185\u90e8\u80fd\u7528\uff0c\u5916\u9762\u3001\u5b50\u7c7b\u90fd\u4e0d\u8bb8\u76f4\u63a5\u78b0<\/strong><\/li>\n<\/ul>\n<pre><code class=\"language-python\">class Person:\n    name = \"\u5f20\u4e09\"       # \u516c\u6709\u6210\u5458\n    __age = 18         # \u79c1\u6709\u6210\u5458\n\n    def get_age(self):\n        return self.__age  # \u672c\u7c7b\u5185\u90e8\uff1a\u53ef\u4ee5\u8bbf\u95ee\u79c1\u6709\n\np = Person()\nprint(p.name)       # \u53ef\u4ee5\n# print(p.__age)   # \u5916\u90e8\uff1a\u62a5\u9519\uff0c\u4e0d\u80fd\u8bbf\u95ee<\/code><\/pre>\n<h1>Python \u7c7b\u4e2d 4 \u79cd\u65b9\u6cd5\uff1a\u5b9e\u4f8b\u65b9\u6cd5\u3001\u7c7b\u65b9\u6cd5\u3001\u9759\u6001\u65b9\u6cd5\u3001<code>__main__<\/code><\/h1>\n<h2>\u4e00\u3001\u6210\u5458\u65b9\u6cd5\uff08\u5b9e\u4f8b\u65b9\u6cd5\uff09<\/h2>\n<p><strong>\u7279\u5f81<\/strong><\/p>\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570\u5fc5\u987b\u662f <code>self<\/code><\/li>\n<li><strong>\u5fc5\u987b\u901a\u8fc7\u5bf9\u8c61\u8c03\u7528<\/strong><\/li>\n<li>\u53ef\u4ee5\u8bbf\u95ee\u3001\u4fee\u6539<strong>\u5b9e\u4f8b\u5c5e\u6027<\/strong>\u548c\u7c7b\u5c5e\u6027<\/li>\n<\/ul>\n<p><strong>\u8003\u70b9<\/strong><\/p>\n<ol>\n<li>\u9690\u542b\u53c2\u6570 <code>self<\/code>\uff0c\u8c03\u7528\u65f6\u4e0d\u7528\u4f20<\/li>\n<li>\u53ea\u80fd<strong>\u5bf9\u8c61\u3002\u65b9\u6cd5 ()<\/strong> \u8c03\u7528<\/li>\n<li>\u80fd\u64cd\u4f5c\u81ea\u5df1\u7684\u5b9e\u4f8b\u5c5e\u6027<\/li>\n<\/ol>\n<pre><code>class A:\n    def fun(self):\n        pass\na = A()\na.fun()<\/code><\/pre>\n<hr \/>\n<h2>\u4e8c\u3001\u7c7b\u65b9\u6cd5<\/h2>\n<p><strong>\u7279\u5f81<\/strong><\/p>\n<ul>\n<li>\u88c5\u9970\u5668 <code>@classmethod<\/code><\/li>\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570 <code>cls<\/code> \u4ee3\u8868\u5f53\u524d\u7c7b<\/li>\n<li><strong>\u53ef\u7528\u7c7b\u540d \/ \u5bf9\u8c61\u90fd\u80fd\u8c03\u7528<\/strong><\/li>\n<li>\u53ea\u80fd\u8bbf\u95ee<strong>\u7c7b\u5c5e\u6027<\/strong>\uff0c\u4e0d\u80fd\u76f4\u63a5\u7528\u5b9e\u4f8b\u5c5e\u6027<\/li>\n<\/ul>\n<p><strong>\u8003\u70b9<\/strong><\/p>\n<ol>\n<li>\u5fc5\u987b\u52a0 <code>@classmethod<\/code><\/li>\n<li>\u53c2\u6570\u56fa\u5b9a <code>cls<\/code><\/li>\n<li>\u4e0d\u4f9d\u8d56\u5b9e\u4f8b\uff0c\u8ddf\u7c7b\u7ed1\u5b9a<\/li>\n<\/ol>\n<pre><code>class A:\n    @classmethod\n    def cm(cls):\n        pass\nA.cm()<\/code><\/pre>\n<hr \/>\n<h2>\u4e09\u3001\u9759\u6001\u65b9\u6cd5<\/h2>\n<p><strong>\u7279\u5f81<\/strong><\/p>\n<ul>\n<li>\u88c5\u9970\u5668 <code>@staticmethod<\/code><\/li>\n<li><strong>\u65e0\u9ed8\u8ba4\u53c2\u6570<\/strong>\uff08\u4e0d\u7528 self\u3001cls\uff09<\/li>\n<li>\u8ddf<strong>\u7c7b\u3001\u5bf9\u8c61\u90fd\u5f31\u7ed1\u5b9a<\/strong>\uff0c\u5c31\u662f\u653e\u5728\u7c7b\u91cc\u7684\u666e\u901a\u51fd\u6570<\/li>\n<li>\u7c7b\u540d\u3001\u5bf9\u8c61\u90fd\u53ef\u8c03\u7528<\/li>\n<\/ul>\n<p><strong>\u8003\u70b9<\/strong><\/p>\n<ol>\n<li><code>@staticmethod<\/code>\uff0c\u65e0\u9ed8\u8ba4\u53c2\u6570<\/li>\n<li>\u4e0d\u80fd\u76f4\u63a5\u8bbf\u95ee\u5b9e\u4f8b\u5c5e\u6027\u3001\u7c7b\u5c5e\u6027<\/li>\n<li>\u53ea\u662f\u903b\u8f91\u5f52\u7c7b\u653e\u5728\u7c7b\u91cc<\/li>\n<\/ol>\n<pre><code>class A:\n    @staticmethod\n    def sm():\n        pass\nA.sm()<\/code><\/pre>\n<hr \/>\n<h2>\u56db\u3001<code>if __name__ == '__main__':<\/code> \u5165\u53e3<\/h2>\n<p>\u4e0d\u662f Java \u7684 main \u65b9\u6cd5\uff0c\u662f<strong>\u7a0b\u5e8f\u5165\u53e3\u5224\u65ad<\/strong><\/p>\n<p><strong>\u8003\u70b9<\/strong><\/p>\n<ol>\n<li>\u5f53\u524d\u6587\u4ef6<strong>\u76f4\u63a5\u8fd0\u884c<\/strong>\uff1a<code>__name__<\/code> \u7b49\u4e8e <code>__main__<\/code>\uff0c\u91cc\u9762\u4ee3\u7801\u6267\u884c<\/li>\n<li>\u5f53\u524d\u6587\u4ef6<strong>\u88ab\u5f53\u4f5c\u6a21\u5757\u5bfc\u5165<\/strong>\uff1a\u4e0d\u6267\u884c\u91cc\u9762\u4ee3\u7801<\/li>\n<li>\u7528\u6765\u9694\u79bb\u6d4b\u8bd5\u4ee3\u7801\uff0c\u9632\u6b62\u5bfc\u5165\u65f6\u81ea\u52a8\u8fd0\u884c<\/li>\n<\/ol>\n<pre><code>if __name__ == '__main__':\n    # \u53ea\u5f53\u524d\u6587\u4ef6\u76f4\u63a5\u8fd0\u884c\u624d\u6267\u884c\n    pass<\/code><\/pre>\n<hr \/>\n<h2>\u4e94\u3001\u5fc5\u8003\u5bf9\u6bd4\u4e00\u53e5\u8bdd<\/h2>\n<ol>\n<li><strong>\u5b9e\u4f8b\u65b9\u6cd5<\/strong>\uff1a\u5e26 <code>self<\/code>\uff0c\u5bf9\u8c61\u8c03\u7528\uff0c\u64cd\u4f5c\u5b9e\u4f8b<\/li>\n<li><strong>\u7c7b\u65b9\u6cd5<\/strong>\uff1a<code>@classmethod<\/code> \u5e26 <code>cls<\/code>\uff0c\u7c7b \/ \u5bf9\u8c61\u90fd\u80fd\u8c03\uff0c\u64cd\u4f5c\u7c7b\u5c5e\u6027<\/li>\n<li><strong>\u9759\u6001\u65b9\u6cd5<\/strong>\uff1a<code>@staticmethod<\/code> \u65e0\u9ed8\u8ba4\u53c2\u6570\uff0c\u7eaf\u5de5\u5177\u51fd\u6570<\/li>\n<li><strong><em>*main*<\/em><\/strong>\uff1a\u533a\u5206\u76f4\u63a5\u8fd0\u884c vs \u88ab\u5bfc\u5165\uff0c\u7a0b\u5e8f\u5165\u53e3<\/li>\n<\/ol>\n<h2>\u516d\u3001\u8003\u8bd5\u5e38\u8003\u9898<\/h2>\n<ul>\n<li>\u8c01\u6709\u9ed8\u8ba4\u53c2\u6570\uff1f\n<p>\u5b9e\u4f8b (self)\u3001\u7c7b\u65b9\u6cd5 (cls) \u6709\uff1b<\/p>\n<p>\u9759\u6001\u65b9\u6cd5\u6ca1\u6709<\/li>\n<li>\u8c01\u80fd\u8bbf\u95ee\u5b9e\u4f8b\u5c5e\u6027\uff1f\u53ea\u6709<strong>\u5b9e\u4f8b\u65b9\u6cd5<\/strong><\/li>\n<li>\u7c7b\u65b9\u6cd5\u3001\u9759\u6001\u65b9\u6cd5\u53ef\u4ee5\u7528<strong>\u7c7b\u540d\u76f4\u63a5\u8c03\u7528<\/strong><\/li>\n<li><code>__main__<\/code> \u4f5c\u7528\uff1a\u9632\u6b62\u5bfc\u5165\u6a21\u5757\u65f6\u6267\u884c\u6d4b\u8bd5\u4ee3\u7801<\/li>\n<\/ul>\n<h1>Python \u5b57\u5178<\/h1>\n<h2>1. \u5b9a\u4e49<\/h2>\n<p>\u952e\u503c\u5bf9\uff1a<code>{\u952e:\u503c, \u952e:\u503c}<\/code><\/p>\n<p>\u952e<strong>\u4e0d\u53ef\u53d8<\/strong>\uff08\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5143\u7ec4\uff09\uff0c\u503c\u4efb\u610f\u7c7b\u578b\u3002<\/p>\n<pre><code>d = {\"name\":\"\u5f20\u4e09\", \"age\":18}<\/code><\/pre>\n<h2>2. \u53d6\u503c<\/h2>\n<ul>\n<li><code>d[\"name\"]<\/code> \u6309\u952e\u53d6\u503c\uff0c<strong>\u4e0d\u5b58\u5728\u62a5\u9519<\/strong><\/li>\n<li><code>d.get(\"age\")<\/code> \u53d6\u503c\uff0c\u4e0d\u5b58\u5728<strong>\u8fd4\u56de None<\/strong>\uff0c\u4e0d\u62a5\u9519<\/li>\n<\/ul>\n<h2>3. \u589e \/ \u6539<\/h2>\n<ul>\n<li>\u952e\u5b58\u5728\uff1a<strong>\u4fee\u6539\u503c<\/strong><\/li>\n<li>\u952e\u4e0d\u5b58\u5728\uff1a<strong>\u65b0\u589e\u952e\u503c\u5bf9<\/strong><\/li>\n<\/ul>\n<pre><code>d[\"age\"] = 20   # \u4fee\u6539\nd[\"sex\"] = \"\u7537\" # \u65b0\u589e<\/code><\/pre>\n<h2>4. \u5220\u9664<\/h2>\n<ul>\n<li><code>del d[\"\u952e\"]<\/code> \u5220\u9664\u6307\u5b9a\u952e<\/li>\n<li><code>d.pop(\"\u952e\")<\/code> \u5220\u9664\u5e76\u8fd4\u56de\u5bf9\u5e94\u503c<\/li>\n<li><code>d.clear()<\/code> \u6e05\u7a7a\u6240\u6709<\/li>\n<\/ul>\n<h2>5. \u5e38\u7528\u904d\u5386<\/h2>\n<ul>\n<li><code>d.keys()<\/code> \u6240\u6709\u952e<\/li>\n<li><code>d.values()<\/code> \u6240\u6709\u503c<\/li>\n<li><code>d.items()<\/code> \u6240\u6709\u952e\u503c\u5bf9 <strong>(k,v)<\/strong><\/li>\n<\/ul>\n<pre><code>for k,v in d.items():\n    print(k,v)<\/code><\/pre>\n<h2>6. \u8003\u8bd5\u5fc5\u80cc\u7279\u70b9<\/h2>\n<ol>\n<li>\u5b57\u5178<strong>\u65e0\u5e8f<\/strong>\uff08Python3.7 + \u63d2\u5165\u6709\u5e8f\uff0c\u4f46\u8003\u8bd5\u6309\u65e0\u5e8f\u8bb0\uff09<\/li>\n<li><strong>\u952e\u552f\u4e00<\/strong>\uff0c\u91cd\u590d\u952e\u4f1a\u8986\u76d6<\/li>\n<li>\u952e\u4e0d\u80fd\u662f\u5217\u8868\u3001\u96c6\u5408\uff1b\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5143\u7ec4<\/li>\n<li>\u67e5\u627e\u901f\u5ea6\u6781\u5feb\uff0c\u9760<strong>\u952e<\/strong>\u6620\u5c04\u53d6\u503c<\/li>\n<\/ol>\n<p>\u5b57\u5178\u5c31\u662f<strong>\u6309\u952e\u5b58\u3001\u6309\u952e\u53d6<\/strong>\uff0c\u589e\u5220\u6539\u67e5\u5168\u9760\u952e\uff0c\u904d\u5386\u7528 items ()\u3002<\/p>\n<h1>\u5217\u8868\u63a8\u5bfc\u5f0f<\/h1>\n<h2>1. \u4f5c\u7528<\/h2>\n<p><strong>\u4e00\u884c\u4ee3\u7801\u5feb\u901f\u751f\u6210\u5217\u8868<\/strong>\uff0c\u4ee3\u66ff\u666e\u901a for \u5faa\u73af\u3002<\/p>\n<h2>2. \u57fa\u7840\u8bed\u6cd5<\/h2>\n<pre><code>[\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u53ef\u8fed\u4ee3\u5bf9\u8c61]<\/code><\/pre>\n<p>\u793a\u4f8b\uff1a\u751f\u6210 1~10 \u5217\u8868<\/p>\n<pre><code>lst = [x for x in range(1,11)]<\/code><\/pre>\n<h2>3. \u5e26\u6761\u4ef6\u7b5b\u9009<\/h2>\n<pre><code>[\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u53ef\u8fed\u4ee3\u5bf9\u8c61 if \u6761\u4ef6]<\/code><\/pre>\n<p>\u793a\u4f8b\uff1a\u53ea\u4fdd\u7559\u5076\u6570<\/p>\n<pre><code>even = [x for x in range(1,11) if x % 2 == 0]<\/code><\/pre>\n<h2>4. \u5e26\u8fd0\u7b97<\/h2>\n<p>\u6bcf\u4e2a\u5143\u7d20\u5148\u8ba1\u7b97\u518d\u5b58\u5165<\/p>\n<pre><code>sq = [x**2 for x in range(1,6)]\n# 1,4,9,16,25<\/code><\/pre>\n<h2>5. \u8003\u8bd5\u6838\u5fc3\u8003\u70b9<\/h2>\n<ol>\n<li>\u683c\u5f0f\uff1a<strong><code>[x for x in ...]<\/code> \u4e2d\u62ec\u53f7<\/strong><\/li>\n<li>\u80fd<strong>\u904d\u5386 + \u7b5b\u9009 + \u8fd0\u7b97<\/strong>\u4e00\u6b65\u5230\u4f4d<\/li>\n<li>\u6bd4\u666e\u901a for \u5faa\u73af<strong>\u7b80\u6d01\u3001\u901f\u5ea6\u5feb<\/strong><\/li>\n<li>\u53ef\u5d4c\u5957\u5faa\u73af\uff08\u7b80\u5355\u4e86\u89e3\uff09<\/li>\n<\/ol>\n<p><strong>\u4e2d\u62ec\u53f7\u91cc\uff1a\u5148\u5199\u7ed3\u679c\uff0c\u518d\u5faa\u73af\uff0c\u6700\u540e\u52a0\u6761\u4ef6<\/strong>\u3002<\/p>\n<h1>\u751f\u6210\u5668 \u7279\u70b9 + \u4f7f\u7528\u573a\u666f<\/h1>\n<h2>\u4e00\u3001\u6838\u5fc3\u7279\u70b9<\/h2>\n<ol>\n<li>\u7528 <strong>yield<\/strong> \u5b9a\u4e49\uff0c\u4e0d\u662f return<\/li>\n<li><strong>\u60f0\u6027\u6c42\u503c<\/strong>\uff1a\u4e0d\u7528\u4e0d\u751f\u6210\uff0c\u7528\u4e00\u4e2a\u751f\u6210\u4e00\u4e2a<\/li>\n<li><strong>\u8282\u7701\u5185\u5b58<\/strong>\uff1a\u4e0d\u4e00\u6b21\u6027\u628a\u6240\u6709\u6570\u636e\u88c5\u8fdb\u5185\u5b58<\/li>\n<li><strong>\u53ea\u80fd\u904d\u5386\u4e00\u6b21<\/strong>\uff0c\u904d\u5386\u5b8c\u5c31\u7a7a\u4e86<\/li>\n<li>\u51fd\u6570\u8c03\u7528\u540e\u8fd4\u56de<strong>\u751f\u6210\u5668\u5bf9\u8c61<\/strong>\uff0c\u4e0d\u7acb\u523b\u6267\u884c<\/li>\n<\/ol>\n<h2>\u4e8c\u3001\u4f7f\u7528\u573a\u666f<\/h2>\n<ol>\n<li><strong>\u6570\u636e\u91cf\u8d85\u5927<\/strong>\uff08\u51e0\u4e07 \/ \u767e\u4e07\u6761\u6570\u636e\uff09\uff0c\u4e0d\u60f3\u5360\u6ee1\u5185\u5b58<\/li>\n<li><strong>\u65e0\u9650\u5e8f\u5217<\/strong>\uff08\u65e0\u9650\u81ea\u7136\u6570\u3001\u5faa\u73af\u8fed\u4ee3\uff09<\/li>\n<li>\u9010\u884c\u8bfb\u53d6\u5927\u6587\u4ef6\uff0c\u4e00\u884c\u4e00\u884c\u5904\u7406<\/li>\n<li>\u6d41\u7a0b\u5206\u6b65\u6682\u505c\u3001\u5206\u6b65\u4ea7\u51fa\u7ed3\u679c<\/li>\n<\/ol>\n<h2>\u4e00\u53e5\u8bdd\u603b\u7ed3<\/h2>\n<p>\u751f\u6210\u5668\u5c31\u662f<strong>\u8fb9\u7528\u8fb9\u751f\u6210\u3001\u4e0d\u5360\u5185\u5b58\u3001\u53ea\u80fd\u7528\u4e00\u6b21<\/strong>\uff0c\u9002\u5408\u5927\u6570\u636e\u548c\u65e0\u9650\u5faa\u73af\u573a\u666f\u3002<\/p>\n<h1>Python \u9762\u5411\u5bf9\u8c61\u7ee7\u627f\u793a\u4f8b<\/h1>\n<p>\u5305\u542b\uff1a<strong>\u7236\u7c7b Person\u3001\u5b50\u7c7b Teacher\/Student<\/strong>\u3001<strong>\u516c\u6709\u5c5e\u6027\u3001\u79c1\u6709\u5c5e\u6027\u3001\u7ee7\u627f\u3001\u65b9\u6cd5\u91cd\u5199\u3001\u5b50\u7c7b\u72ec\u6709\u65b9\u6cd5<\/strong>\u3002<\/p>\n<pre><code># \u7236\u7c7b\uff1a\u4eba\u7c7b\nclass Person:\n    # \u516c\u6709\u5c5e\u6027\n    name = \"\"\n    age = \"\"\n    # \u79c1\u6709\u5c5e\u6027\uff08\u53cc\u4e0b\u5212\u7ebf\u5f00\u5934\uff09\n    __id_card = \"110123456\"\n\n    def __init__(self, name, age):\n        self.name = name\n        self.age = age\n\n    # \u7236\u7c7b\u516c\u6709\u65b9\u6cd5\n    def show_info(self):\n        print(f\"\u59d3\u540d\uff1a{self.name}\uff0c\u5e74\u9f84\uff1a{self.age}\")\n\n    # \u63d0\u4f9b\u65b9\u6cd5\u8bbf\u95ee\u79c1\u6709\u5c5e\u6027\n    def get_id(self):\n        return self.__id_card\n\n# \u5b50\u7c7b\uff1a\u5b66\u751f \u7ee7\u627f Person\nclass Student(Person):\n    def __init__(self, name, age, stu_id):\n        # \u8c03\u7528\u7236\u7c7b\u6784\u9020\u65b9\u6cd5\n        super().__init__(name, age)\n        # \u5b66\u751f\u72ec\u6709\u5c5e\u6027\n        self.stu_id = stu_id\n\n    # \u5b66\u751f\u72ec\u6709\u65b9\u6cd5\uff1a\u81ea\u6211\u4ecb\u7ecd\n    def introduce(self):\n        print(f\"\u6211\u662f\u5b66\u751f{self.name}\uff0c\u4eca\u5e74{self.age}\u5c81\uff0c\u5b66\u53f7\uff1a{self.stu_id}\")\n\n# \u5b50\u7c7b\uff1a\u8001\u5e08 \u7ee7\u627f Person\nclass Teacher(Person):\n    def __init__(self, name, age, subject):\n        super().__init__(name, age)\n        # \u8001\u5e08\u72ec\u6709\u5c5e\u6027\n        self.subject = subject\n\n    # \u91cd\u5199\u7236\u7c7b\u65b9\u6cd5\n    def show_info(self):\n        print(f\"\u8001\u5e08\uff1a{self.name}\uff0c\u5e74\u9f84\uff1a{self.age}\uff0c\u4efb\u6559\u79d1\u76ee\uff1a{self.subject}\")\n\n# \u6d4b\u8bd5\u8fd0\u884c\nif __name__ == \"__main__\":\n    # \u521b\u5efa\u5b66\u751f\u5bf9\u8c61\n    s = Student(\"\u674e\u660e\", 20, \"2026001\")\n    s.introduce()       # \u5b50\u7c7b\u72ec\u6709\u81ea\u6211\u4ecb\u7ecd\n    s.show_info()       # \u7ee7\u627f\u7236\u7c7b\u65b9\u6cd5\n    print(\"\u8eab\u4efd\u8bc1\u53f7\uff1a\", s.get_id())  # \u8bbf\u95ee\u7236\u7c7b\u79c1\u6709\u5c5e\u6027\n\n    print(\"-\" * 30)\n\n    # \u521b\u5efa\u8001\u5e08\u5bf9\u8c61\n    t = Teacher(\"\u738b\u82b3\", 38, \"Python\u7f16\u7a0b\")\n    t.show_info()       # \u91cd\u5199\u540e\u7684\u65b9\u6cd5<\/code><\/pre>\n<h2>\u6838\u5fc3\u77e5\u8bc6\u70b9\u6807\u6ce8<\/h2>\n<ol>\n<li><strong>\u7ee7\u627f<\/strong>\uff1a<code>Student(Person)<\/code>\u3001<code>Teacher(Person)<\/code> \u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b<\/li>\n<li><strong>\u516c\u6709\u5c5e\u6027<\/strong>\uff1a<code>name\u3001age<\/code> \u5185\u5916\u90fd\u80fd\u76f4\u63a5\u8bbf\u95ee<\/li>\n<li><strong>\u79c1\u6709\u5c5e\u6027<\/strong>\uff1a<code>__id_card<\/code> \u53cc\u4e0b\u5212\u7ebf\uff0c<strong>\u5916\u90e8\u4e0d\u80fd\u76f4\u63a5\u8bbf\u95ee<\/strong>\uff0c\u53ea\u80fd\u7c7b\u5185\u90e8 \/ \u901a\u8fc7\u516c\u6709\u65b9\u6cd5\u8bbf\u95ee<\/li>\n<li><strong><code>super()<\/code><\/strong>\uff1a\u8c03\u7528\u7236\u7c7b\u6784\u9020\u65b9\u6cd5\uff0c\u7ee7\u627f\u7236\u7c7b\u521d\u59cb\u5316\u903b\u8f91<\/li>\n<li><strong>\u65b9\u6cd5\u91cd\u5199<\/strong>\uff1a\u8001\u5e08\u7c7b\u91cd\u5199\u4e86\u7236\u7c7b <code>show_info<\/code><\/li>\n<li><strong>\u5b50\u7c7b\u72ec\u6709\u65b9\u6cd5<\/strong>\uff1a\u5b66\u751f\u7c7b <code>introduce()<\/code> \u81ea\u6211\u4ecb\u7ecd\uff0c\u7236\u7c7b\u6ca1\u6709<\/li>\n<\/ol>\n<h2>\u8fd0\u884c\u6548\u679c<\/h2>\n<pre><code>\u6211\u662f\u5b66\u751f\u674e\u660e\uff0c\u4eca\u5e7420\u5c81\uff0c\u5b66\u53f7\uff1a2026001\n\u59d3\u540d\uff1a\u674e\u660e\uff0c\u5e74\u9f84\uff1a20\n\u8eab\u4efd\u8bc1\u53f7\uff1a 110123456\n------------------------------\n\u8001\u5e08\uff1a\u738b\u82b3\uff0c\u5e74\u9f84\uff1a38\uff0c\u4efb\u6559\u79d1\u76ee\uff1aPython\u7f16\u7a0b<\/code><\/pre>\n<h1>\u56db\u4e2a\u7ecf\u5178\u9012\u5f52<\/h1>\n<h2>1. \u9636\u4e58\u9012\u5f52<\/h2>\n<pre><code># \u6c42 n \u7684\u9636\u4e58\ndef fact(n):\n    # \u9012\u5f52\u51fa\u53e3\n    if n == 1 or n == 0:\n        return 1\n    # \u9012\u5f52\u516c\u5f0f\n    return n * fact(n - 1)\n\n# \u6d4b\u8bd5\nif __name__ == \"__main__\":\n    print(fact(5))   # 5! = 120\n    print(fact(6))   # 720<\/code><\/pre>\n<h2>2. \u722c\u697c\u68af\u95ee\u9898<\/h2>\n<p>\u89c4\u5219\uff1a\u6bcf\u6b21\u53ea\u80fd\u8d70 1 \u9636\u6216 2 \u9636\uff0c\u6c42\u4e0a n \u9636\u53f0\u9636\u603b\u8d70\u6cd5<\/p>\n<pre><code>def climb(n):\n    # \u9012\u5f52\u51fa\u53e3\n    if n == 1:\n        return 1\n    if n == 2:\n        return 2\n    # \u5f53\u524d = \u5c111\u9636\u8d70\u6cd5 + \u5c112\u9636\u8d70\u6cd5\n    return climb(n-1) + climb(n-2)\n\n# \u6d4b\u8bd5\nif __name__ == \"__main__\":\n    print(climb(3))  # 3\n    print(climb(4))  # 5<\/code><\/pre>\n<h2>3. \u6c49\u8bfa\u5854\u9012\u5f52<\/h2>\n<pre><code># n\u4e2a\u76d8\u5b50\uff0c\u4ecea\u501f\u52a9b\uff0c\u79fb\u5230c\ndef hanoi(n, a, b, c):\n    if n == 1:\n        print(f\"\u76d8\u5b50 1 \uff1a{a} \u2192 {c}\")\n    else:\n        # \u5148\u628an-1\u4e2a\u4ecea\u79fb\u5230b\n        hanoi(n-1, a, c, b)\n        # \u79fb\u52a8\u6700\u5e95\u4e0b\u76d8\u5b50\n        print(f\"\u76d8\u5b50 {n} \uff1a{a} \u2192 {c}\")\n        # \u518d\u628an-1\u4e2a\u4eceb\u79fb\u5230c\n        hanoi(n-1, b, a, c)\n\n# \u6d4b\u8bd5 3\u4e2a\u76d8\u5b50\nif __name__ == \"__main__\":\n    hanoi(3, \"A\u67f1\", \"B\u67f1\", \"C\u67f1\")<\/code><\/pre>\n<h3>4.\u6590\u6ce2\u90a3\u5951<\/h3>\n<pre><code class=\"language-python\"># \u9012\u5f52\u6c42\u7b2cn\u4e2a\u6590\u6ce2\u90a3\u5951\u6570\ndef fib(n):\n    if n == 1 or n == 2:\n        return 1\n    return fib(n-1) + fib(n-2)\n\n# \u6d4b\u8bd5\uff1a\u8f93\u51fa\u7b2c1~10\u9879\nfor i in range(1, 11):\n    print(fib(i), end=\" \")<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b2c\u4e00\u7ae0 python\u8bed\u8a00\u6982\u8ff0 1\uff0e\u591a\u9009\u9898\uff1a\u4e0b\u9762\u54ea\u4e9b\u5c5e\u4e8e Python \u8bed\u8a00\u7684\u7279\u70b9\uff1f\uff08ABCD\uff09 A\uff0e\u8de8\u5e73\u53f0 B [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[16],"class_list":["post-71","post","type-post","status-publish","format-standard","hentry","category-artical","tag-16"],"_links":{"self":[{"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/posts\/71","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/comments?post=71"}],"version-history":[{"count":1,"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/posts\/71\/revisions"}],"predecessor-version":[{"id":72,"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/posts\/71\/revisions\/72"}],"wp:attachment":[{"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/media?parent=71"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/categories?post=71"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.everfades.cn\/index.php\/wp-json\/wp\/v2\/tags?post=71"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}