{"id":975524,"date":"2024-12-27T06:13:57","date_gmt":"2024-12-26T22:13:57","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/975524.html"},"modified":"2024-12-27T06:14:00","modified_gmt":"2024-12-26T22:14:00","slug":"python%e5%a6%82%e4%bd%95%e5%87%8f%e5%b0%91%e5%ad%97%e5%85%b8%e5%86%85%e5%ad%98","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/975524.html","title":{"rendered":"python\u5982\u4f55\u51cf\u5c11\u5b57\u5178\u5185\u5b58"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24200719\/af44e6e9-392a-44be-939b-b5631d752935.webp\" alt=\"python\u5982\u4f55\u51cf\u5c11\u5b57\u5178\u5185\u5b58\" \/><\/p>\n<p><p> <strong>Python\u51cf\u5c11\u5b57\u5178\u5185\u5b58\u7684\u51e0\u79cd\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528<code>__slots__<\/code>\u3001\u5408\u5e76\u76f8\u4f3c\u952e\u3001\u4f7f\u7528<code>collections.defaultdict<\/code>\u3001\u9009\u62e9\u9002\u5f53\u7684\u6570\u636e\u7ed3\u6784\u3001\u4f7f\u7528<code>PyPy<\/code>\u3001\u4f7f\u7528<code>intern()<\/code>\u51fd\u6570\u3001\u4f18\u5316\u952e\u7684\u5b58\u50a8\u65b9\u5f0f\u3002<\/strong>\u5176\u4e2d\uff0c\u9009\u62e9\u9002\u5f53\u7684\u6570\u636e\u7ed3\u6784\u662f\u4e00\u4e2a\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5176\u4ed6\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\u66ff\u4ee3\u5b57\u5178\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002\u6bd4\u5982\uff0c\u5bf9\u4e8e\u4ec5\u9700\u8981\u952e-\u503c\u5bf9\u7684\u7b80\u5355\u6620\u5c04\uff0c\u53ef\u4ee5\u4f7f\u7528<code>namedtuple<\/code>\u6216<code>dataclass<\/code>\u66ff\u4ee3\u5b57\u5178\uff0c\u8fd9\u6837\u4e0d\u4ec5\u53ef\u4ee5\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\uff0c\u8fd8\u80fd\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528 <code>__slots__<\/code><\/p>\n<\/p>\n<p><p><code>__slots__<\/code> \u662f Python \u4e2d\u7684\u4e00\u79cd\u5185\u5b58\u4f18\u5316\u6280\u672f\uff0c\u4e3b\u8981\u7528\u4e8e\u51cf\u5c11\u7c7b\u5b9e\u4f8b\u7684\u5185\u5b58\u5f00\u9500\u3002\u5728 Python \u4e2d\uff0c\u7c7b\u7684\u5b9e\u4f8b\u901a\u5e38\u901a\u8fc7\u5b57\u5178\u6765\u5b58\u50a8\u5176\u5c5e\u6027\uff0c\u4f46\u8fd9\u4f1a\u5e26\u6765\u989d\u5916\u7684\u5185\u5b58\u5f00\u9500\u3002\u901a\u8fc7\u5b9a\u4e49 <code>__slots__<\/code>\uff0c\u53ef\u4ee5\u9650\u5236\u7c7b\u5b9e\u4f8b\u53ea\u80fd\u6709\u7279\u5b9a\u7684\u5c5e\u6027\uff0c\u4ece\u800c\u907f\u514d\u4f7f\u7528\u5b57\u5178\u5b58\u50a8\u3002\u8fd9\u79cd\u4f18\u5316\u9002\u7528\u4e8e\u9700\u8981\u521b\u5efa\u5927\u91cf\u76f8\u540c\u7c7b\u5b9e\u4f8b\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<ol>\n<li><code>__slots__<\/code> \u7684\u4f7f\u7528\u65b9\u6cd5<\/li>\n<\/ol>\n<p><p><code>__slots__<\/code> \u662f\u4e00\u4e2a\u7c7b\u5c5e\u6027\uff0c\u53ef\u4ee5\u5728\u7c7b\u5b9a\u4e49\u4e2d\u8fdb\u884c\u5b9a\u4e49\uff0c\u7528\u6765\u9650\u5236\u7c7b\u5b9e\u4f8b\u7684\u5c5e\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">class MyClass:<\/p>\n<p>    __slots__ = [&#39;attr1&#39;, &#39;attr2&#39;]<\/p>\n<p>    def __init__(self, attr1, attr2):<\/p>\n<p>        self.attr1 = attr1<\/p>\n<p>        self.attr2 = attr2<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u5b9a\u4e49\uff0c<code>MyClass<\/code> \u7684\u5b9e\u4f8b\u53ea\u80fd\u6709 <code>attr1<\/code> \u548c <code>attr2<\/code> \u4e24\u4e2a\u5c5e\u6027\uff0c\u65e0\u6cd5\u52a8\u6001\u6dfb\u52a0\u5176\u4ed6\u5c5e\u6027\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><code>__slots__<\/code> \u7684\u9650\u5236<\/li>\n<\/ol>\n<p><p>\u867d\u7136 <code>__slots__<\/code> \u80fd\u6709\u6548\u51cf\u5c11\u5185\u5b58\u5f00\u9500\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>__slots__<\/code> \u540e\uff0c\u4e0d\u80fd\u518d\u7ed9\u5b9e\u4f8b\u52a8\u6001\u6dfb\u52a0\u65b0\u5c5e\u6027\uff1b\u6b64\u5916\uff0c<code>__slots__<\/code> \u4e0d\u80fd\u7528\u4e8e\u5b50\u7c7b\u7684\u7ee7\u627f\u4e2d\uff0c\u56e0\u4e3a\u5b50\u7c7b\u4e0d\u80fd\u7ee7\u627f\u7236\u7c7b\u7684 <code>__slots__<\/code> \u5b9a\u4e49\u3002\u56e0\u6b64\uff0c\u4f7f\u7528 <code>__slots__<\/code> \u65f6\u9700\u8981\u6743\u8861\u5229\u5f0a\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u5408\u5e76\u76f8\u4f3c\u952e<\/p>\n<\/p>\n<p><p>\u5728\u5904\u7406\u5b57\u5178\u65f6\uff0c\u5982\u679c\u4e0d\u540c\u5b57\u5178\u4e2d\u6709\u8bb8\u591a\u76f8\u540c\u7684\u952e\uff0c\u53ef\u4ee5\u901a\u8fc7\u5408\u5e76\u76f8\u4f3c\u952e\u6765\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u5177\u6709\u91cd\u590d\u952e\u7684\u591a\u4e2a\u5b57\u5178\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<ol>\n<li>\u5408\u5e76\u76f8\u4f3c\u952e\u7684\u793a\u4f8b<\/li>\n<\/ol>\n<p><p>\u5047\u8bbe\u6709\u591a\u4e2a\u5b57\u5178\uff0c\u6bcf\u4e2a\u5b57\u5178\u90fd\u6709\u76f8\u4f3c\u7684\u952e\uff0c\u53ef\u4ee5\u901a\u8fc7\u5408\u5e76\u8fd9\u4e9b\u5b57\u5178\u6765\u51cf\u5c11\u5185\u5b58\u5f00\u9500\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">dict1 = {&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 25, &#39;city&#39;: &#39;New York&#39;}<\/p>\n<p>dict2 = {&#39;name&#39;: &#39;Bob&#39;, &#39;age&#39;: 30, &#39;city&#39;: &#39;Los Angeles&#39;}<\/p>\n<h2><strong>\u5408\u5e76\u5b57\u5178<\/strong><\/h2>\n<p>combined_dict = {key: [dict1[key], dict2[key]] for key in dict1}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u5408\u5e76\u5b57\u5178\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\uff0c\u540c\u65f6\u4f7f\u6570\u636e\u7ed3\u6784\u66f4\u52a0\u7d27\u51d1\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u5408\u5e76\u76f8\u4f3c\u952e\u7684\u6ce8\u610f\u4e8b\u9879<\/li>\n<\/ol>\n<p><p>\u5728\u5408\u5e76\u5b57\u5178\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u5b57\u5178\u5177\u6709\u76f8\u540c\u7684\u952e\u540d\uff0c\u5426\u5219\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u6216\u9519\u8bef\u3002\u6b64\u5916\uff0c\u5408\u5e76\u540e\u7684\u6570\u636e\u7ed3\u6784\u53ef\u80fd\u4f1a\u66f4\u52a0\u590d\u6742\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u9700\u8981\u8c28\u614e\u5904\u7406\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u4f7f\u7528 <code>collections.defaultdict<\/code><\/p>\n<\/p>\n<p><p><code>collections.defaultdict<\/code> \u662f Python \u6807\u51c6\u5e93\u4e2d\u7684\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u521b\u5efa\u5e26\u6709\u9ed8\u8ba4\u503c\u7684\u5b57\u5178\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528 <code>defaultdict<\/code> \u53ef\u4ee5\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u5f00\u9500\u3002<\/p>\n<\/p>\n<ol>\n<li><code>defaultdict<\/code> \u7684\u4f7f\u7528\u65b9\u6cd5<\/li>\n<\/ol>\n<p><p><code>defaultdict<\/code> \u662f <code>collections<\/code> \u6a21\u5757\u4e2d\u7684\u4e00\u4e2a\u7c7b\uff0c\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u5e26\u6709\u9ed8\u8ba4\u503c\u7684\u5b57\u5178\u3002\u5176\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from collections import defaultdict<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u9ed8\u8ba4\u503c\u4e3a 0 \u7684\u5b57\u5178<\/strong><\/h2>\n<p>default_dict = defaultdict(int)<\/p>\n<h2><strong>\u6dfb\u52a0\u952e\u503c\u5bf9<\/strong><\/h2>\n<p>default_dict[&#39;a&#39;] += 1<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4f7f\u7528 <code>defaultdict<\/code>\uff0c\u53ef\u4ee5\u907f\u514d\u5728\u5b57\u5178\u4e2d\u624b\u52a8\u68c0\u67e5\u952e\u662f\u5426\u5b58\u5728\uff0c\u4ece\u800c\u51cf\u5c11\u4ee3\u7801\u7684\u5197\u4f59\u548c\u5185\u5b58\u7684\u4f7f\u7528\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><code>defaultdict<\/code> \u7684\u4f18\u7f3a\u70b9<\/li>\n<\/ol>\n<p><p>\u4f7f\u7528 <code>defaultdict<\/code> \u53ef\u4ee5\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u5f00\u9500\uff0c\u540c\u65f6\u63d0\u9ad8\u4ee3\u7801\u7684\u7b80\u6d01\u6027\u3002\u7136\u800c\uff0c<code>defaultdict<\/code> \u4e5f\u6709\u4e00\u4e9b\u7f3a\u70b9\uff0c\u4f8b\u5982\u5728\u521d\u59cb\u5316\u65f6\u9700\u8981\u6307\u5b9a\u9ed8\u8ba4\u5de5\u5382\u51fd\u6570\uff0c\u56e0\u6b64\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4e0d\u5982\u666e\u901a\u5b57\u5178\u7075\u6d3b\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u9009\u62e9\u9002\u5f53\u7684\u6570\u636e\u7ed3\u6784<\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5b57\u5178\u53ef\u80fd\u4e0d\u662f\u6700\u4f73\u7684\u6570\u636e\u7ed3\u6784\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5185\u5b58\u5f00\u9500\u3002<\/p>\n<\/p>\n<ol>\n<li>\u66ff\u4ee3\u5b57\u5178\u7684\u6570\u636e\u7ed3\u6784<\/li>\n<\/ol>\n<p><p>\u5bf9\u4e8e\u7b80\u5355\u7684\u952e\u503c\u5bf9\u6620\u5c04\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528 <code>namedtuple<\/code> \u6216 <code>dataclass<\/code> \u66ff\u4ee3\u5b57\u5178\u3002\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784\u901a\u5e38\u5177\u6709\u66f4\u5c0f\u7684\u5185\u5b58\u5f00\u9500\uff0c\u5e76\u4e14\u5728\u4ee3\u7801\u53ef\u8bfb\u6027\u65b9\u9762\u4e5f\u66f4\u5177\u4f18\u52bf\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784<\/li>\n<\/ol>\n<p><p>\u5728\u9009\u62e9\u6570\u636e\u7ed3\u6784\u65f6\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u8fdb\u884c\u6743\u8861\u3002\u5bf9\u4e8e\u9700\u8981\u5feb\u901f\u67e5\u627e\u7684\u60c5\u51b5\uff0c\u5b57\u5178\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\uff1b\u800c\u5bf9\u4e8e\u9700\u8981\u9891\u7e41\u66f4\u65b0\u7684\u60c5\u51b5\uff0c\u5217\u8868\u6216\u96c6\u5408\u53ef\u80fd\u66f4\u4e3a\u5408\u9002\u3002\u56e0\u6b64\uff0c\u5728\u9009\u62e9\u6570\u636e\u7ed3\u6784\u65f6\uff0c\u9700\u8981\u7efc\u5408\u8003\u8651\u6027\u80fd\u548c\u5185\u5b58\u6d88\u8017\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u4f7f\u7528 <code>PyPy<\/code><\/p>\n<\/p>\n<p><p><code>PyPy<\/code> \u662f Python \u7684\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5176\u5185\u5b58\u7ba1\u7406\u548c\u6027\u80fd\u4f18\u5316\u65b9\u9762\u6bd4 CPython \u66f4\u5177\u4f18\u52bf\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528 <code>PyPy<\/code> \u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u4f7f\u7528\u3002<\/p>\n<\/p>\n<ol>\n<li><code>PyPy<\/code> \u7684\u4f18\u52bf<\/li>\n<\/ol>\n<p><p><code>PyPy<\/code> \u662f\u4e00\u4e2a\u57fa\u4e8e JIT\uff08\u5373\u65f6\u7f16\u8bd1\u5668\uff09\u6280\u672f\u7684 Python \u5b9e\u73b0\uff0c\u5176\u5185\u5b58\u7ba1\u7406\u548c\u6027\u80fd\u4f18\u5316\u65b9\u9762\u6bd4 CPython \u66f4\u5177\u4f18\u52bf\u3002\u901a\u8fc7\u4f7f\u7528 <code>PyPy<\/code>\uff0c\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u4f7f\u7528\uff0c\u5e76\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u901f\u5ea6\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u4f7f\u7528 <code>PyPy<\/code> \u7684\u6ce8\u610f\u4e8b\u9879<\/li>\n<\/ol>\n<p><p>\u867d\u7136 <code>PyPy<\/code> \u5728\u5185\u5b58\u7ba1\u7406\u548c\u6027\u80fd\u65b9\u9762\u5177\u6709\u4f18\u52bf\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\u3002\u4f8b\u5982\uff0c<code>PyPy<\/code> \u5bf9\u4e8e\u67d0\u4e9b C \u6269\u5c55\u6a21\u5757\u7684\u517c\u5bb9\u6027\u8f83\u5dee\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u9700\u8981\u786e\u4fdd\u517c\u5bb9\u6027\u3002\u6b64\u5916\uff0c<code>PyPy<\/code> \u7684\u542f\u52a8\u65f6\u95f4\u8f83\u957f\uff0c\u56e0\u6b64\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4e0d\u5982 CPython \u5408\u9002\u3002<\/p>\n<\/p>\n<p><p>\u516d\u3001\u4f7f\u7528 <code>intern()<\/code> \u51fd\u6570<\/p>\n<\/p>\n<p><p>Python \u63d0\u4f9b\u4e86 <code>intern()<\/code> \u51fd\u6570\uff0c\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u5b58\u50a8\u5728\u4e00\u4e2a\u5168\u5c40\u8868\u4e2d\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002\u5728\u5904\u7406\u5927\u91cf\u5b57\u7b26\u4e32\u952e\u7684\u5b57\u5178\u65f6\uff0c\u4f7f\u7528 <code>intern()<\/code> \u51fd\u6570\u53ef\u4ee5\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002<\/p>\n<\/p>\n<ol>\n<li><code>intern()<\/code> \u51fd\u6570\u7684\u4f7f\u7528<\/li>\n<\/ol>\n<p><p><code>intern()<\/code> \u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u5b58\u50a8\u5728\u4e00\u4e2a\u5168\u5c40\u8868\u4e2d\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002\u5176\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import sys<\/p>\n<h2><strong>\u4f7f\u7528 intern() \u51fd\u6570<\/strong><\/h2>\n<p>key1 = sys.intern(&#39;key&#39;)<\/p>\n<p>key2 = sys.intern(&#39;key&#39;)<\/p>\n<h2><strong>\u68c0\u67e5\u5185\u5b58\u5730\u5740\u662f\u5426\u76f8\u540c<\/strong><\/h2>\n<p>print(id(key1) == id(key2))  # \u8f93\u51fa True<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4f7f\u7528 <code>intern()<\/code> \u51fd\u6570\uff0c\u53ef\u4ee5\u51cf\u5c11\u91cd\u590d\u5b57\u7b26\u4e32\u7684\u5185\u5b58\u5f00\u9500\uff0c\u4ece\u800c\u63d0\u9ad8\u5b57\u5178\u7684\u5185\u5b58\u6548\u7387\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><code>intern()<\/code> \u51fd\u6570\u7684\u6ce8\u610f\u4e8b\u9879<\/li>\n<\/ol>\n<p><p>\u867d\u7136 <code>intern()<\/code> \u51fd\u6570\u53ef\u4ee5\u51cf\u5c11\u5185\u5b58\u5f00\u9500\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\u3002\u4f8b\u5982\uff0c<code>intern()<\/code> \u51fd\u6570\u53ea\u80fd\u7528\u4e8e\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u56e0\u6b64\u5728\u5904\u7406\u5176\u4ed6\u7c7b\u578b\u7684\u952e\u65f6\u9700\u8981\u6ce8\u610f\u3002\u6b64\u5916\uff0c<code>intern()<\/code> \u51fd\u6570\u53ef\u80fd\u4f1a\u589e\u52a0\u4ee3\u7801\u7684\u590d\u6742\u6027\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u9700\u8981\u6743\u8861\u5229\u5f0a\u3002<\/p>\n<\/p>\n<p><p>\u4e03\u3001\u4f18\u5316\u952e\u7684\u5b58\u50a8\u65b9\u5f0f<\/p>\n<\/p>\n<p><p>\u5728\u5b57\u5178\u4e2d\uff0c\u952e\u7684\u5b58\u50a8\u65b9\u5f0f\u5bf9\u5185\u5b58\u4f7f\u7528\u6709\u5f88\u5927\u5f71\u54cd\u3002\u901a\u8fc7\u4f18\u5316\u952e\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u5f00\u9500\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528\u54c8\u5e0c\u503c\u4f5c\u4e3a\u952e<\/li>\n<\/ol>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u54c8\u5e0c\u503c\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\uff0c\u4ee5\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u54c8\u5e0c\u51fd\u6570\u751f\u6210\u552f\u4e00\u6807\u8bc6\u7b26\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u5f00\u9500\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u4f18\u5316\u952e\u7684\u5b58\u50a8\u65b9\u5f0f\u7684\u6ce8\u610f\u4e8b\u9879<\/li>\n<\/ol>\n<p><p>\u867d\u7136\u4f7f\u7528\u54c8\u5e0c\u503c\u4f5c\u4e3a\u952e\u53ef\u4ee5\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u9650\u5236\u3002\u4f8b\u5982\uff0c\u54c8\u5e0c\u51fd\u6570\u53ef\u80fd\u4f1a\u5bfc\u81f4\u51b2\u7a81\uff0c\u56e0\u6b64\u5728\u9009\u62e9\u54c8\u5e0c\u51fd\u6570\u65f6\u9700\u8981\u8c28\u614e\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u54c8\u5e0c\u503c\u53ef\u80fd\u4f1a\u589e\u52a0\u4ee3\u7801\u7684\u590d\u6742\u6027\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u9700\u8981\u6743\u8861\u5229\u5f0a\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u5728 Python \u4e2d\uff0c\u5b57\u5178\u662f\u4e00\u79cd\u975e\u5e38\u5f3a\u5927\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5176\u5185\u5b58\u4f7f\u7528\u53ef\u80fd\u4f1a\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002\u901a\u8fc7\u4f7f\u7528 <code>__slots__<\/code>\u3001\u5408\u5e76\u76f8\u4f3c\u952e\u3001\u9009\u62e9\u9002\u5f53\u7684\u6570\u636e\u7ed3\u6784\u3001\u4f7f\u7528 <code>PyPy<\/code>\u3001\u4f7f\u7528 <code>intern()<\/code> \u51fd\u6570\u4ee5\u53ca\u4f18\u5316\u952e\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u5f00\u9500\uff0c\u4ece\u800c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u4f18\u5316\u7b56\u7565\uff0c\u4ee5\u8fbe\u5230\u6700\u4f73\u7684\u5185\u5b58\u4f7f\u7528\u6548\u679c\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u6709\u6548\u964d\u4f4ePython\u5b57\u5178\u7684\u5185\u5b58\u5360\u7528\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u5b57\u5178\u662f\u4e00\u79cd\u7075\u6d3b\u4e14\u5f3a\u5927\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4f46\u5b83\u4eec\u53ef\u80fd\u4f1a\u5360\u7528\u5927\u91cf\u5185\u5b58\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u6765\u51cf\u5c11\u5b57\u5178\u7684\u5185\u5b58\u4f7f\u7528\uff1a  <\/p>\n<ol>\n<li>\u4f7f\u7528<code>collections.defaultdict<\/code>\u6216<code>collections.OrderedDict<\/code>\u6765\u66ff\u4ee3\u5e38\u89c4\u5b57\u5178\uff0c\u8fd9\u4e9b\u7ed3\u6784\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u5185\u5b58\u7ba1\u7406\u3002  <\/li>\n<li>\u5982\u679c\u5b57\u5178\u7684\u952e\u662f\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528<code>str<\/code>\u7684interning\u529f\u80fd\uff0c\u5229\u7528Python\u7684\u5b57\u7b26\u4e32\u6c60\u6765\u51cf\u5c11\u91cd\u590d\u5b57\u7b26\u4e32\u7684\u5185\u5b58\u5360\u7528\u3002  <\/li>\n<li>\u5bf9\u4e8e\u5927\u578b\u5b57\u5178\uff0c\u53ef\u4ee5\u4f7f\u7528<code>pickle<\/code>\u6216<code>json<\/code>\u7b49\u6a21\u5757\u8fdb\u884c\u5e8f\u5217\u5316\u548c\u538b\u7f29\u5b58\u50a8\uff0c\u4ee5\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002<\/li>\n<\/ol>\n<p><strong>\u5982\u4f55\u9009\u62e9\u9002\u5408\u7684\u5b57\u5178\u7c7b\u578b\u4ee5\u4f18\u5316\u5185\u5b58\u4f7f\u7528\uff1f<\/strong><br \/>Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5b57\u5178\u7c7b\u578b\uff0c\u5982\u666e\u901a\u5b57\u5178\u3001<code>collections.defaultdict<\/code>\u3001<code>collections.OrderedDict<\/code>\u7b49\u3002\u9009\u62e9\u5408\u9002\u7684\u5b57\u5178\u7c7b\u578b\u53ef\u4ee5\u5e2e\u52a9\u51cf\u5c11\u5185\u5b58\u5360\u7528\u3002  <\/p>\n<ul>\n<li>\u666e\u901a\u5b57\u5178\u9002\u5408\u5927\u591a\u6570\u60c5\u51b5\uff0c\u4f46\u5982\u679c\u9700\u8981\u9ed8\u8ba4\u503c\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528<code>defaultdict<\/code>\u3002  <\/li>\n<li>\u5f53\u9700\u8981\u4fdd\u6301\u63d2\u5165\u987a\u5e8f\u65f6\uff0c\u4f7f\u7528<code>OrderedDict<\/code>\u53ef\u80fd\u662f\u4e00\u4e2a\u597d\u9009\u62e9\u3002  <\/li>\n<li>\u8fd8\u53ef\u4ee5\u4f7f\u7528<code>WeakKeyDictionary<\/code>\uff0c\u5b83\u5141\u8bb8\u5b57\u5178\u4e2d\u7684\u952e\u88ab\u5783\u573e\u56de\u6536\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u5360\u7528\uff0c\u9002\u5408\u7f13\u5b58\u573a\u666f\u3002<\/li>\n<\/ul>\n<p><strong>\u5982\u4f55\u901a\u8fc7\u51cf\u5c11\u5b57\u5178\u4e2d\u7684\u6570\u636e\u91cf\u6765\u964d\u4f4e\u5185\u5b58\u5360\u7528\uff1f<\/strong><br \/>\u4f18\u5316\u5b57\u5178\u7684\u5185\u5bb9\u662f\u964d\u4f4e\u5185\u5b58\u5360\u7528\u7684\u6709\u6548\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8bae\uff1a  <\/p>\n<ol>\n<li>\u5b9a\u671f\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u952e\u503c\u5bf9\uff0c\u786e\u4fdd\u5b57\u5178\u4e2d\u53ea\u4fdd\u7559\u5fc5\u8981\u7684\u6570\u636e\u3002  <\/li>\n<li>\u4f7f\u7528\u538b\u7f29\u6570\u636e\u683c\u5f0f\u5b58\u50a8\u503c\uff0c\u4f8b\u5982\uff0c\u5c06\u5927\u578b\u5b57\u7b26\u4e32\u8f6c\u4e3a\u66f4\u5c0f\u7684\u683c\u5f0f\uff08\u5982\u4f7f\u7528<code>gzip<\/code>\u538b\u7f29\uff09\u3002  <\/li>\n<li>\u5982\u679c\u5b57\u5178\u4e2d\u6709\u91cd\u590d\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u8003\u8651\u5c06\u5176\u62bd\u53d6\u5230\u4e00\u4e2a\u5355\u72ec\u7684\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u4f7f\u7528\u7d22\u5f15\u6216\u5f15\u7528\u6765\u4ee3\u66ff\u91cd\u590d\u5b58\u50a8\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u5360\u7528\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"Python\u51cf\u5c11\u5b57\u5178\u5185\u5b58\u7684\u51e0\u79cd\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528__slots__\u3001\u5408\u5e76\u76f8\u4f3c\u952e\u3001\u4f7f\u7528collections.defa [&hellip;]","protected":false},"author":3,"featured_media":975533,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975524"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=975524"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975524\/revisions"}],"predecessor-version":[{"id":975535,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/975524\/revisions\/975535"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/975533"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=975524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=975524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=975524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}