{"id":1074885,"date":"2025-01-08T11:38:47","date_gmt":"2025-01-08T03:38:47","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1074885.html"},"modified":"2025-01-08T11:38:49","modified_gmt":"2025-01-08T03:38:49","slug":"%e5%a6%82%e4%bd%95%e9%a2%84%e5%88%a4python%e4%bb%a3%e7%a0%81%e4%bc%9a%e8%b7%91%e5%a4%9a%e4%b9%85-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1074885.html","title":{"rendered":"\u5982\u4f55\u9884\u5224python\u4ee3\u7801\u4f1a\u8dd1\u591a\u4e45"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25104415\/e0796fd5-8f9d-4aef-9a5e-7777008954c9.webp\" alt=\"\u5982\u4f55\u9884\u5224python\u4ee3\u7801\u4f1a\u8dd1\u591a\u4e45\" \/><\/p>\n<p><p> <strong>\u9884\u5224Python\u4ee3\u7801\u4f1a\u8dd1\u591a\u4e45\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u5206\u6790\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u3001\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\u3001\u8fdb\u884c\u5c40\u90e8\u6d4b\u8bd5\u3001\u8003\u8651\u786c\u4ef6\u548c\u73af\u5883\u56e0\u7d20<\/strong>\u3002\u5176\u4e2d\uff0c<strong>\u5206\u6790\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6<\/strong>\u662f\u6700\u4e3a\u91cd\u8981\u7684\u4e00\u70b9\uff0c\u56e0\u4e3a\u5b83\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u4ece\u6839\u672c\u4e0a\u7406\u89e3\u4ee3\u7801\u7684\u8fd0\u884c\u6548\u7387\uff0c\u5e76\u4e3a\u4f18\u5316\u63d0\u4f9b\u4f9d\u636e\u3002<\/p>\n<\/p>\n<p><p><strong>\u5206\u6790\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6<\/strong>\u6307\u7684\u662f\u5bf9\u4ee3\u7801\u6240\u91c7\u7528\u7684\u7b97\u6cd5\u8fdb\u884c\u6570\u5b66\u4e0a\u7684\u5206\u6790\uff0c\u8bc4\u4f30\u5176\u5728\u8f93\u5165\u89c4\u6a21\u53d8\u5316\u65f6\u7684\u8fd0\u884c\u65f6\u95f4\u3002\u901a\u8fc7\u5927O\u7b26\u53f7\u8868\u793a\u6cd5\uff08\u5982O(n)\u3001O(n^2)\u7b49\uff09\uff0c\u53ef\u4ee5\u9884\u6d4b\u4ee3\u7801\u5728\u9762\u5bf9\u4e0d\u540c\u6570\u636e\u89c4\u6a21\u65f6\u7684\u6027\u80fd\u8868\u73b0\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u9002\u7528\u4e8ePython\uff0c\u4e5f\u9002\u7528\u4e8e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u3002<\/p>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u8be6\u7ec6\u8ba8\u8bba\u4e00\u4e9b\u9884\u5224Python\u4ee3\u7801\u8fd0\u884c\u65f6\u95f4\u7684\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u5206\u6790\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6<\/h3>\n<\/p>\n<p><p>\u5206\u6790\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662f\u8bc4\u4f30\u4ee3\u7801\u8fd0\u884c\u65f6\u95f4\u7684\u6838\u5fc3\u65b9\u6cd5\u3002\u65f6\u95f4\u590d\u6742\u5ea6\u63cf\u8ff0\u4e86\u7b97\u6cd5\u7684\u6267\u884c\u65f6\u95f4\u968f\u7740\u8f93\u5165\u89c4\u6a21\u7684\u53d8\u5316\u800c\u53d8\u5316\u7684\u8d8b\u52bf\u3002\u5e38\u89c1\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u6709O(1)\u3001O(log n)\u3001O(n)\u3001O(n log n)\u3001O(n^2)\u7b49\u3002<\/p>\n<\/p>\n<p><h4>1\u3001\u5e38\u89c1\u65f6\u95f4\u590d\u6742\u5ea6<\/h4>\n<\/p>\n<ul>\n<li><strong>O(1)<\/strong>\uff1a\u5e38\u6570\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u8868\u793a\u7b97\u6cd5\u7684\u8fd0\u884c\u65f6\u95f4\u4e0d\u968f\u8f93\u5165\u89c4\u6a21\u7684\u53d8\u5316\u800c\u53d8\u5316\u3002<\/li>\n<li><strong>O(log n)<\/strong>\uff1a\u5bf9\u6570\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u8868\u793a\u7b97\u6cd5\u7684\u8fd0\u884c\u65f6\u95f4\u968f\u7740\u8f93\u5165\u89c4\u6a21\u7684\u5bf9\u6570\u589e\u957f\u3002<\/li>\n<li><strong>O(n)<\/strong>\uff1a\u7ebf\u6027\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u8868\u793a\u7b97\u6cd5\u7684\u8fd0\u884c\u65f6\u95f4\u4e0e\u8f93\u5165\u89c4\u6a21\u6210\u6b63\u6bd4\u3002<\/li>\n<li><strong>O(n log n)<\/strong>\uff1a\u7ebf\u6027\u5bf9\u6570\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u8868\u793a\u7b97\u6cd5\u7684\u8fd0\u884c\u65f6\u95f4\u4e0e\u8f93\u5165\u89c4\u6a21\u7684\u7ebf\u6027\u5bf9\u6570\u6210\u6b63\u6bd4\u3002<\/li>\n<li><strong>O(n^2)<\/strong>\uff1a\u5e73\u65b9\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u8868\u793a\u7b97\u6cd5\u7684\u8fd0\u884c\u65f6\u95f4\u4e0e\u8f93\u5165\u89c4\u6a21\u7684\u5e73\u65b9\u6210\u6b63\u6bd4\u3002<\/li>\n<\/ul>\n<p><h4>2\u3001\u5206\u6790\u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>\u4e3a\u4e86\u5206\u6790\u4ee3\u7801\u7684\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u5165\u624b\uff1a<\/p>\n<\/p>\n<ul>\n<li><strong>\u57fa\u672c\u64cd\u4f5c<\/strong>\uff1a\u8bc6\u522b\u4ee3\u7801\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\uff0c\u5982\u8d4b\u503c\u3001\u6bd4\u8f83\u3001\u7b97\u672f\u8fd0\u7b97\u7b49\uff0c\u8bc4\u4f30\u5176\u6267\u884c\u6b21\u6570\u3002<\/li>\n<li><strong>\u5faa\u73af\u7ed3\u6784<\/strong>\uff1a\u5206\u6790\u4ee3\u7801\u4e2d\u7684\u5faa\u73af\u7ed3\u6784\uff0c\u5305\u62ecfor\u5faa\u73af\u3001while\u5faa\u73af\u7b49\uff0c\u8ba1\u7b97\u5faa\u73af\u7684\u6267\u884c\u6b21\u6570\u3002<\/li>\n<li><strong>\u9012\u5f52\u7ed3\u6784<\/strong>\uff1a\u5982\u679c\u4ee3\u7801\u4e2d\u5305\u542b\u9012\u5f52\u8c03\u7528\uff0c\u9700\u8981\u901a\u8fc7\u9012\u5f52\u65b9\u7a0b\u6765\u5206\u6790\u9012\u5f52\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u3002<\/li>\n<\/ul>\n<p><h3>\u4e8c\u3001\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177<\/h3>\n<\/p>\n<p><p>\u9664\u4e86\u6570\u5b66\u4e0a\u7684\u5206\u6790\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u6027\u80fd\u5206\u6790\u5de5\u5177\u6765\u8bc4\u4f30\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u3002\u8fd9\u4e9b\u5de5\u5177\u80fd\u591f\u63d0\u4f9b\u4ee3\u7801\u5728\u5b9e\u9645\u8fd0\u884c\u65f6\u7684\u8be6\u7ec6\u6027\u80fd\u6570\u636e\uff0c\u5305\u62ec\u51fd\u6570\u8c03\u7528\u6b21\u6570\u3001\u6267\u884c\u65f6\u95f4\u7b49\u3002<\/p>\n<\/p>\n<p><h4>1\u3001cProfile<\/h4>\n<\/p>\n<p><p>cProfile\u662fPython\u81ea\u5e26\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5b83\u80fd\u591f\u8be6\u7ec6\u8bb0\u5f55\u6bcf\u4e2a\u51fd\u6570\u7684\u8c03\u7528\u65f6\u95f4\u548c\u8c03\u7528\u6b21\u6570\u3002\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import cProfile<\/p>\n<p>def my_function():<\/p>\n<p>    # Your code here<\/p>\n<p>    pass<\/p>\n<p>cProfile.run(&#39;my_function()&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001line_profiler<\/h4>\n<\/p>\n<p><p>line_profiler\u662f\u4e00\u4e2a\u7b2c\u4e09\u65b9\u5e93\uff0c\u53ef\u4ee5\u5206\u6790\u4ee3\u7801\u7684\u6bcf\u4e00\u884c\u7684\u6267\u884c\u65f6\u95f4\u3002\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5b89\u88c5line_profiler<\/p>\n<p>pip install line_profiler<\/p>\n<h2><strong>\u4f7f\u7528\u793a\u4f8b<\/strong><\/h2>\n<p>from line_profiler import LineProfiler<\/p>\n<p>def my_function():<\/p>\n<p>    # Your code here<\/p>\n<p>    pass<\/p>\n<p>prof = LineProfiler()<\/p>\n<p>prof.add_function(my_function)<\/p>\n<p>prof.run(&#39;my_function()&#39;)<\/p>\n<p>prof.print_stats()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u8fdb\u884c\u5c40\u90e8\u6d4b\u8bd5<\/h3>\n<\/p>\n<p><p>\u5728\u5206\u6790\u548c\u5de5\u5177\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5bf9\u4ee3\u7801\u8fdb\u884c\u5c40\u90e8\u6d4b\u8bd5\u6765\u9884\u5224\u8fd0\u884c\u65f6\u95f4\u3002\u5c40\u90e8\u6d4b\u8bd5\u53ef\u4ee5\u5e2e\u52a9\u8bc6\u522b\u4ee3\u7801\u4e2d\u7684\u74f6\u9888\uff0c\u4f18\u5316\u4ee3\u7801\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h4>1\u3001\u6d4b\u8bd5\u6570\u636e\u89c4\u6a21<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u5bf9\u4e0d\u540c\u6570\u636e\u89c4\u6a21\u7684\u6d4b\u8bd5\uff0c\u89c2\u5bdf\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u53d8\u5316\u8d8b\u52bf\uff0c\u5224\u65ad\u4ee3\u7801\u7684\u6027\u80fd\u8868\u73b0\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5206\u522b\u6d4b\u8bd5\u8f93\u5165\u89c4\u6a21\u4e3a100\u30011000\u300110000\u7684\u6570\u636e\uff0c\u8bb0\u5f55\u6bcf\u6b21\u6d4b\u8bd5\u7684\u8fd0\u884c\u65f6\u95f4\u3002<\/p>\n<\/p>\n<p><h4>2\u3001\u6d4b\u8bd5\u4e0d\u540c\u8f93\u5165<\/h4>\n<\/p>\n<p><p>\u9664\u4e86\u6d4b\u8bd5\u6570\u636e\u89c4\u6a21\uff0c\u8fd8\u53ef\u4ee5\u6d4b\u8bd5\u4e0d\u540c\u7c7b\u578b\u7684\u8f93\u5165\uff0c\u89c2\u5bdf\u4ee3\u7801\u5728\u4e0d\u540c\u8f93\u5165\u4e0b\u7684\u8fd0\u884c\u65f6\u95f4\u3002\u4f8b\u5982\uff0c\u6d4b\u8bd5\u6709\u5e8f\u6570\u7ec4\u3001\u968f\u673a\u6570\u7ec4\u3001\u9006\u5e8f\u6570\u7ec4\u7b49\uff0c\u8bc4\u4f30\u4ee3\u7801\u5728\u5404\u79cd\u60c5\u51b5\u4e0b\u7684\u6027\u80fd\u8868\u73b0\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u8003\u8651\u786c\u4ef6\u548c\u73af\u5883\u56e0\u7d20<\/h3>\n<\/p>\n<p><p>\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u4e0d\u4ec5\u53d6\u51b3\u4e8e\u7b97\u6cd5\u548c\u4ee3\u7801\u5b9e\u73b0\uff0c\u8fd8\u53d7\u5230\u786c\u4ef6\u548c\u8fd0\u884c\u73af\u5883\u7684\u5f71\u54cd\u3002\u5728\u8bc4\u4f30\u4ee3\u7801\u8fd0\u884c\u65f6\u95f4\u65f6\uff0c\u9700\u8981\u8003\u8651\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u786c\u4ef6\u914d\u7f6e<\/h4>\n<\/p>\n<p><p>\u8ba1\u7b97\u673a\u7684\u5904\u7406\u5668\u3001\u5185\u5b58\u3001\u78c1\u76d8\u7b49\u786c\u4ef6\u914d\u7f6e\u4f1a\u5f71\u54cd\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u3002\u9ad8\u6027\u80fd\u7684\u786c\u4ef6\u901a\u5e38\u80fd\u591f\u63d0\u9ad8\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\uff0c\u7f29\u77ed\u8fd0\u884c\u65f6\u95f4\u3002<\/p>\n<\/p>\n<p><h4>2\u3001\u5e76\u53d1\u548c\u5e76\u884c<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u4ee3\u7801\u6d89\u53ca\u5e76\u53d1\u548c\u5e76\u884c\u8ba1\u7b97\uff0c\u8fd0\u884c\u65f6\u95f4\u8fd8\u4f1a\u53d7\u5230\u7ebf\u7a0b\u548c\u8fdb\u7a0b\u7684\u8c03\u5ea6\u3001\u9501\u7684\u7ade\u4e89\u7b49\u56e0\u7d20\u7684\u5f71\u54cd\u3002\u9700\u8981\u901a\u8fc7\u5b9e\u9645\u6d4b\u8bd5\u8bc4\u4f30\u5e76\u53d1\u548c\u5e76\u884c\u4ee3\u7801\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n<p><h4>3\u3001\u89e3\u91ca\u5668\u548c\u7f16\u8bd1\u5668<\/h4>\n<\/p>\n<p><p>\u4e0d\u540c\u7248\u672c\u7684Python\u89e3\u91ca\u5668\u548c\u7f16\u8bd1\u5668\u53ef\u80fd\u5bf9\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u6709\u5f71\u54cd\u3002\u9700\u8981\u786e\u4fdd\u4ee3\u7801\u5728\u76ee\u6807\u73af\u5883\u4e0b\u7684\u6027\u80fd\u8868\u73b0\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u4f18\u5316\u4ee3\u7801\u6027\u80fd<\/h3>\n<\/p>\n<p><p>\u5728\u8bc4\u4f30\u4ee3\u7801\u8fd0\u884c\u65f6\u95f4\u540e\uff0c\u5982\u679c\u53d1\u73b0\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u8f83\u957f\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u4ee3\u7801\u6027\u80fd\u6765\u7f29\u77ed\u8fd0\u884c\u65f6\u95f4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u4f18\u5316\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u7b97\u6cd5\u4f18\u5316<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u9009\u62e9\u66f4\u9ad8\u6548\u7684\u7b97\u6cd5\uff0c\u964d\u4f4e\u4ee3\u7801\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u3002\u4f8b\u5982\uff0c\u5c06\u5192\u6ce1\u6392\u5e8f\u6539\u4e3a\u5feb\u901f\u6392\u5e8f\uff0c\u53ef\u4ee5\u5c06\u65f6\u95f4\u590d\u6742\u5ea6\u4eceO(n^2)\u964d\u5230O(n log n)\u3002<\/p>\n<\/p>\n<p><h4>2\u3001\u6570\u636e\u7ed3\u6784\u4f18\u5316<\/h4>\n<\/p>\n<p><p>\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u54c8\u5e0c\u8868\u4ee3\u66ff\u94fe\u8868\uff0c\u53ef\u4ee5\u5c06\u67e5\u627e\u64cd\u4f5c\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4eceO(n)\u964d\u5230O(1)\u3002<\/p>\n<\/p>\n<p><h4>3\u3001\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u7f13\u5b58\u4e2d\u95f4\u7ed3\u679c\u3001\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u51cf\u5c11\u4ee3\u7801\u7684\u8ba1\u7b97\u91cf\uff0c\u63d0\u9ad8\u6267\u884c\u6548\u7387\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u52a8\u6001\u89c4\u5212\u89e3\u51b3\u95ee\u9898\uff0c\u53ef\u4ee5\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u5b50\u95ee\u9898\uff0c\u964d\u4f4e\u65f6\u95f4\u590d\u6742\u5ea6\u3002<\/p>\n<\/p>\n<p><h4>4\u3001\u5e76\u53d1\u548c\u5e76\u884c\u4f18\u5316<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u591a\u7ebf\u7a0b\u3001\u591a\u8fdb\u7a0b\u7b49\u5e76\u53d1\u548c\u5e76\u884c\u6280\u672f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u3002\u4f8b\u5982\uff0c\u5c06\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\u5206\u914d\u5230\u591a\u4e2a\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u4e2d\u6267\u884c\uff0c\u53ef\u4ee5\u5145\u5206\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u7684\u8ba1\u7b97\u80fd\u529b\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u5b9e\u9645\u6848\u4f8b\u5206\u6790<\/h3>\n<\/p>\n<p><p>\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u9884\u5224Python\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\uff0c\u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u5b9e\u9645\u6848\u4f8b\u8fdb\u884c\u8be6\u7ec6\u5206\u6790\u3002<\/p>\n<\/p>\n<p><h4>\u6848\u4f8b\u63cf\u8ff0<\/h4>\n<\/p>\n<p><p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u8ba1\u7b97\u6590\u6ce2\u90a3\u5951\u6570\u5217\u7684\u51fd\u6570\uff0c\u8981\u6c42\u8ba1\u7b97\u7b2cn\u4e2a\u6590\u6ce2\u90a3\u5951\u6570\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def fibonacci(n):<\/p>\n<p>    if n &lt;= 1:<\/p>\n<p>        return n<\/p>\n<p>    else:<\/p>\n<p>        return fibonacci(n-1) + fibonacci(n-2)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>\u5206\u6790\u65f6\u95f4\u590d\u6742\u5ea6<\/h4>\n<\/p>\n<p><p>\u8be5\u51fd\u6570\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5\u8ba1\u7b97\u6590\u6ce2\u90a3\u5951\u6570\u5217\uff0c\u5176\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(2^n)\uff0c\u56e0\u4e3a\u6bcf\u6b21\u8c03\u7528\u90fd\u4f1a\u4ea7\u751f\u4e24\u4e2a\u5b50\u95ee\u9898\uff0c\u9012\u5f52\u8c03\u7528\u7684\u6b21\u6570\u968f\u7740n\u7684\u589e\u52a0\u5448\u6307\u6570\u589e\u957f\u3002<\/p>\n<\/p>\n<p><h4>\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528cProfile\u5bf9\u4ee3\u7801\u8fdb\u884c\u6027\u80fd\u5206\u6790\uff0c\u8bc4\u4f30\u5b9e\u9645\u8fd0\u884c\u65f6\u95f4\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import cProfile<\/p>\n<p>def fibonacci(n):<\/p>\n<p>    if n &lt;= 1:<\/p>\n<p>        return n<\/p>\n<p>    else:<\/p>\n<p>        return fibonacci(n-1) + fibonacci(n-2)<\/p>\n<p>cProfile.run(&#39;fibonacci(30)&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u6027\u80fd\u5206\u6790\u5de5\u5177\u53ef\u4ee5\u770b\u5230\uff0c\u8ba1\u7b97\u7b2c30\u4e2a\u6590\u6ce2\u90a3\u5951\u6570\u7684\u8fd0\u884c\u65f6\u95f4\u8f83\u957f\uff0c\u5b58\u5728\u4f18\u5316\u7a7a\u95f4\u3002<\/p>\n<\/p>\n<p><h4>\u4f18\u5316\u4ee3\u7801\u6027\u80fd<\/h4>\n<\/p>\n<p><p>\u4e3a\u4e86\u4f18\u5316\u4ee3\u7801\u6027\u80fd\uff0c\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u89c4\u5212\u65b9\u6cd5\uff0c\u5c06\u65f6\u95f4\u590d\u6742\u5ea6\u964d\u5230O(n)\u3002\u4f18\u5316\u540e\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def fibonacci(n):<\/p>\n<p>    if n &lt;= 1:<\/p>\n<p>        return n<\/p>\n<p>    fib = [0] * (n + 1)<\/p>\n<p>    fib[1] = 1<\/p>\n<p>    for i in range(2, n + 1):<\/p>\n<p>        fib[i] = fib[i-1] + fib[i-2]<\/p>\n<p>    return fib[n]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u52a8\u6001\u89c4\u5212\u65b9\u6cd5\uff0c\u907f\u514d\u4e86\u91cd\u590d\u8ba1\u7b97\u5b50\u95ee\u9898\uff0c\u5927\u5927\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h3>\u4e03\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u5982\u4f55\u9884\u5224Python\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u3002\u4e3b\u8981\u65b9\u6cd5\u5305\u62ec\u5206\u6790\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u3001\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\u3001\u8fdb\u884c\u5c40\u90e8\u6d4b\u8bd5\u3001\u8003\u8651\u786c\u4ef6\u548c\u73af\u5883\u56e0\u7d20\u3002\u5728\u8bc4\u4f30\u4ee3\u7801\u8fd0\u884c\u65f6\u95f4\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u7b97\u6cd5\u4f18\u5316\u3001\u6570\u636e\u7ed3\u6784\u4f18\u5316\u3001\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u3001\u5e76\u53d1\u548c\u5e76\u884c\u4f18\u5316\u7b49\u65b9\u6cd5\u63d0\u9ad8\u4ee3\u7801\u6027\u80fd\u3002\u5e0c\u671b\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u8bfb\u8005\u80fd\u591f\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u9884\u5224\u548c\u4f18\u5316Python\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u8bc4\u4f30Python\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\uff1f<\/strong><br \/>\u4e3a\u4e86\u8bc4\u4f30Python\u4ee3\u7801\u7684\u8fd0\u884c\u65f6\u95f4\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684<code>time<\/code>\u6a21\u5757\u6216<code>timeit<\/code>\u6a21\u5757\u3002<code>time<\/code>\u6a21\u5757\u53ef\u4ee5\u7b80\u5355\u5730\u8bb0\u5f55\u4ee3\u7801\u6267\u884c\u524d\u540e\u7684\u65f6\u95f4\u5dee\uff0c\u800c<code>timeit<\/code>\u6a21\u5757\u5219\u66f4\u4e3a\u7cbe\u786e\uff0c\u9002\u7528\u4e8e\u5c0f\u6bb5\u4ee3\u7801\u7684\u6027\u80fd\u6d4b\u8bd5\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\u5982<code>cProfile<\/code>\u4e5f\u80fd\u83b7\u5f97\u8be6\u7ec6\u7684\u8fd0\u884c\u65f6\u95f4\u5206\u6790\uff0c\u5e2e\u52a9\u8bc6\u522b\u4ee3\u7801\u4e2d\u7684\u74f6\u9888\u3002<\/p>\n<p><strong>\u6709\u54ea\u4e9b\u56e0\u7d20\u4f1a\u5f71\u54cdPython\u4ee3\u7801\u7684\u6267\u884c\u65f6\u95f4\uff1f<\/strong><br 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