{"id":1025744,"date":"2024-12-31T10:36:37","date_gmt":"2024-12-31T02:36:37","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1025744.html"},"modified":"2024-12-31T10:36:40","modified_gmt":"2024-12-31T02:36:40","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8python%e4%b8%ad%e8%a1%a8%e7%a4%ba%e5%9c%86%e5%91%a8%e7%8e%87","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1025744.html","title":{"rendered":"\u5982\u4f55\u5728Python\u4e2d\u8868\u793a\u5706\u5468\u7387"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/12\/536a743d-efc6-42ac-99c7-e9f9890bfcf9.webp?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"\u5982\u4f55\u5728Python\u4e2d\u8868\u793a\u5706\u5468\u7387\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u8868\u793a\u5706\u5468\u7387\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0<\/strong>\uff0c<strong>\u4f7f\u7528\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u3001\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u3001\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u3001\u4f7f\u7528\u5916\u90e8\u5e93mpmath\u4e2d\u7684mp.pi\u5e38\u91cf<\/strong>\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528Python\u7684\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u3002\u8fd9\u662f\u56e0\u4e3amath\u6a21\u5757\u662fPython\u7684\u6807\u51c6\u5e93\uff0c\u4f7f\u7528\u8d77\u6765\u975e\u5e38\u65b9\u4fbf\u4e14\u7cbe\u5ea6\u8db3\u591f\u9ad8\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63a2\u8ba8\u5b83\u4eec\u7684\u4f18\u7f3a\u70b9\u3002<\/p>\n<\/p>\n<p><p><strong>\u4f7f\u7528\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf<\/strong><\/p>\n<\/p>\n<p><p>Python\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5185\u7f6e\u7684math\u6a21\u5757\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bbf\u95ee\u5404\u79cd\u6570\u5b66\u51fd\u6570\u548c\u5e38\u91cf\u3002\u8981\u8868\u793a\u5706\u5468\u7387\u03c0\uff0c\u53ea\u9700\u8981\u5bfc\u5165math\u6a21\u5757\u5e76\u4f7f\u7528math.pi\u5373\u53ef\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>pi = math.pi<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7b80\u5355\u3001\u76f4\u63a5\uff0c\u5e76\u4e14\u7531\u4e8emath\u6a21\u5757\u662fPython\u7684\u6807\u51c6\u5e93\uff0c\u4f7f\u7528\u5b83\u4e0d\u4f1a\u5f15\u5165\u4efb\u4f55\u989d\u5916\u7684\u4f9d\u8d56\u3002\u6b64\u5916\uff0cmath.pi\u7684\u7cbe\u5ea6\u4e5f\u8db3\u591f\u9ad8\uff0c\u80fd\u591f\u6ee1\u8db3\u5927\u591a\u6570\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><p><strong>\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf<\/strong><\/p>\n<\/p>\n<p><p>\u9664\u4e86math\u6a21\u5757\uff0cnumpy\u6a21\u5757\u4e5f\u63d0\u4f9b\u4e86pi\u5e38\u91cf\u3002numpy\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u7279\u522b\u9002\u7528\u4e8e\u5904\u7406\u5927\u89c4\u6a21\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u3002\u5982\u679c\u4f60\u7684\u9879\u76ee\u4e2d\u5df2\u7ecf\u5728\u4f7f\u7528numpy\uff0c\u90a3\u4e48\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528numpy.pi\u6765\u8868\u793a\u5706\u5468\u7387\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>pi = np.pi<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>numpy.pi\u7684\u7cbe\u5ea6\u4e0emath.pi\u76f8\u540c\uff0c\u4f46\u662f\u7531\u4e8enumpy\u662f\u7b2c\u4e09\u65b9\u5e93\uff0c\u9700\u8981\u989d\u5916\u5b89\u88c5\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u7684\u9879\u76ee\u4e2d\u4e0d\u9700\u8981\u5176\u4ed6numpy\u529f\u80fd\uff0c\u4ec5\u4ec5\u4e3a\u4e86\u83b7\u53d6\u5706\u5468\u7387\u800c\u5f15\u5165numpy\u662f\u4e0d\u592a\u5212\u7b97\u7684\u3002<\/p>\n<\/p>\n<p><p><strong>\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387<\/strong><\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u80fd\u4e0d\u5e0c\u671b\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u5e93\u3002\u8fd9\u65f6\u53ef\u4ee5\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4f7f\u752815\u4f4d\u5c0f\u6570\u7684\u5706\u5468\u7387\u5c31\u80fd\u6ee1\u8db3\u5927\u591a\u6570\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">pi = 3.141592653589793<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u5b8c\u5168\u4e0d\u9700\u8981\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u5e93\uff0c\u975e\u5e38\u7b80\u5355\u3002\u4f46\u662f\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u7684\u7f3a\u70b9\u4e5f\u5f88\u660e\u663e\uff1a\u7cbe\u5ea6\u662f\u56fa\u5b9a\u7684\uff0c\u800c\u4e14\u624b\u52a8\u8f93\u5165\u53ef\u80fd\u4f1a\u51fa\u9519\u3002\u5982\u679c\u5bf9\u7cbe\u5ea6\u6709\u66f4\u9ad8\u8981\u6c42\uff0c\u5efa\u8bae\u4f7f\u7528math\u6a21\u5757\u6216numpy\u6a21\u5757\u3002<\/p>\n<\/p>\n<p><p><strong>\u4f7f\u7528\u5916\u90e8\u5e93mpmath\u4e2d\u7684mp.pi\u5e38\u91cf<\/strong><\/p>\n<\/p>\n<p><p>\u5bf9\u4e8e\u4e00\u4e9b\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528mpmath\u5e93\u3002mpmath\u662f\u4e00\u4e2a\u652f\u6301\u4efb\u610f\u7cbe\u5ea6\u8ba1\u7b97\u7684Python\u5e93\uff0c\u53ef\u4ee5\u63d0\u4f9b\u6bd4math\u6a21\u5757\u548cnumpy\u6a21\u5757\u66f4\u9ad8\u7684\u7cbe\u5ea6\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import mpmath<\/p>\n<p>pi = mpmath.mp.pi<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>mpmath\u5e93\u7684\u4f18\u70b9\u662f\u80fd\u591f\u63d0\u4f9b\u4efb\u610f\u7cbe\u5ea6\u7684\u5706\u5468\u7387\uff0c\u975e\u5e38\u9002\u5408\u79d1\u5b66\u8ba1\u7b97\u548c\u5de5\u7a0b\u5e94\u7528\u3002\u4f46\u5b83\u7684\u7f3a\u70b9\u662f\u9700\u8981\u989d\u5916\u5b89\u88c5\uff0c\u5e76\u4e14\u8ba1\u7b97\u9ad8\u7cbe\u5ea6\u6570\u503c\u65f6\u4f1a\u5360\u7528\u66f4\u591a\u7684\u5185\u5b58\u548c\u8ba1\u7b97\u8d44\u6e90\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf<\/p>\n<\/p>\n<p><p>Python\u7684math\u6a21\u5757\u662f\u6807\u51c6\u5e93\u7684\u4e00\u90e8\u5206\uff0c\u56e0\u6b64\u65e0\u9700\u989d\u5916\u5b89\u88c5\u3002\u901a\u8fc7\u5bfc\u5165math\u6a21\u5757\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4f7f\u7528\u5404\u79cd\u6570\u5b66\u51fd\u6570\u548c\u5e38\u91cf\u3002\u5176\u4e2d\uff0cmath.pi\u8868\u793a\u5706\u5468\u7387\u03c0\uff0c\u5176\u503c\u4e3a3.141592653589793\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>pi = math.pi<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7b80\u5355\u3001\u76f4\u63a5\uff0c\u5e76\u4e14\u7531\u4e8emath\u6a21\u5757\u662f\u6807\u51c6\u5e93\u7684\u4e00\u90e8\u5206\uff0c\u4e0d\u9700\u8981\u989d\u5916\u5b89\u88c5\u4efb\u4f55\u4f9d\u8d56\u3002math.pi\u7684\u7cbe\u5ea6\u8db3\u591f\u9ad8\uff0c\u80fd\u591f\u6ee1\u8db3\u5927\u591a\u6570\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf<\/p>\n<\/p>\n<p><p>numpy\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u7279\u522b\u9002\u7528\u4e8e\u5904\u7406\u5927\u89c4\u6a21\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u3002numpy\u6a21\u5757\u4e5f\u63d0\u4f9b\u4e86pi\u5e38\u91cf\uff0c\u5176\u503c\u4e0emath.pi\u76f8\u540c\u3002\u5982\u679c\u4f60\u7684\u9879\u76ee\u4e2d\u5df2\u7ecf\u5728\u4f7f\u7528numpy\uff0c\u90a3\u4e48\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528numpy.pi\u6765\u8868\u793a\u5706\u5468\u7387\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>pi = np.pi<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>numpy.pi\u7684\u7cbe\u5ea6\u4e0emath.pi\u76f8\u540c\uff0c\u4f46\u662f\u7531\u4e8enumpy\u662f\u7b2c\u4e09\u65b9\u5e93\uff0c\u9700\u8981\u989d\u5916\u5b89\u88c5\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u7684\u9879\u76ee\u4e2d\u4e0d\u9700\u8981\u5176\u4ed6numpy\u529f\u80fd\uff0c\u4ec5\u4ec5\u4e3a\u4e86\u83b7\u53d6\u5706\u5468\u7387\u800c\u5f15\u5165numpy\u662f\u4e0d\u592a\u5212\u7b97\u7684\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387<\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u80fd\u4e0d\u5e0c\u671b\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u5e93\u3002\u8fd9\u65f6\u53ef\u4ee5\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4f7f\u752815\u4f4d\u5c0f\u6570\u7684\u5706\u5468\u7387\u5c31\u80fd\u6ee1\u8db3\u5927\u591a\u6570\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">pi = 3.141592653589793<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u5b8c\u5168\u4e0d\u9700\u8981\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u5e93\uff0c\u975e\u5e38\u7b80\u5355\u3002\u4f46\u662f\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u7684\u7f3a\u70b9\u4e5f\u5f88\u660e\u663e\uff1a\u7cbe\u5ea6\u662f\u56fa\u5b9a\u7684\uff0c\u800c\u4e14\u624b\u52a8\u8f93\u5165\u53ef\u80fd\u4f1a\u51fa\u9519\u3002\u5982\u679c\u5bf9\u7cbe\u5ea6\u6709\u66f4\u9ad8\u8981\u6c42\uff0c\u5efa\u8bae\u4f7f\u7528math\u6a21\u5757\u6216numpy\u6a21\u5757\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528\u5916\u90e8\u5e93mpmath\u4e2d\u7684mp.pi\u5e38\u91cf<\/p>\n<\/p>\n<p><p>\u5bf9\u4e8e\u4e00\u4e9b\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528mpmath\u5e93\u3002mpmath\u662f\u4e00\u4e2a\u652f\u6301\u4efb\u610f\u7cbe\u5ea6\u8ba1\u7b97\u7684Python\u5e93\uff0c\u53ef\u4ee5\u63d0\u4f9b\u6bd4math\u6a21\u5757\u548cnumpy\u6a21\u5757\u66f4\u9ad8\u7684\u7cbe\u5ea6\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import mpmath<\/p>\n<p>pi = mpmath.mp.pi<\/p>\n<p>print(pi)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>mpmath\u5e93\u7684\u4f18\u70b9\u662f\u80fd\u591f\u63d0\u4f9b\u4efb\u610f\u7cbe\u5ea6\u7684\u5706\u5468\u7387\uff0c\u975e\u5e38\u9002\u5408\u79d1\u5b66\u8ba1\u7b97\u548c\u5de5\u7a0b\u5e94\u7528\u3002\u4f46\u5b83\u7684\u7f3a\u70b9\u662f\u9700\u8981\u989d\u5916\u5b89\u88c5\uff0c\u5e76\u4e14\u8ba1\u7b97\u9ad8\u7cbe\u5ea6\u6570\u503c\u65f6\u4f1a\u5360\u7528\u66f4\u591a\u7684\u5185\u5b58\u548c\u8ba1\u7b97\u8d44\u6e90\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u7efc\u4e0a\u6240\u8ff0\uff0c\u5728Python\u4e2d\u8868\u793a\u5706\u5468\u7387\u03c0\u6709\u591a\u79cd\u65b9\u6cd5\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\uff0c\u56e0\u4e3a\u5b83\u7b80\u5355\u3001\u76f4\u63a5\uff0c\u5e76\u4e14\u7cbe\u5ea6\u8db3\u591f\u9ad8\u3002\u5bf9\u4e8e\u9700\u8981\u5904\u7406\u5927\u89c4\u6a21\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u3002\u5982\u679c\u4e0d\u5e0c\u671b\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u5e93\uff0c\u53ef\u4ee5\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u3002\u5bf9\u4e8e\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528mpmath\u5e93\u4e2d\u7684mp.pi\u5e38\u91cf\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u80fd\u591f\u66f4\u597d\u5730\u5b9e\u73b0\u4f60\u7684\u7f16\u7a0b\u76ee\u6807\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u5706\u5468\u7387<\/p>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5706\u5468\u7387\u03c0\u7684\u8868\u793a\u548c\u4f7f\u7528\u975e\u5e38\u5e7f\u6cdb\u3002\u65e0\u8bba\u662f\u79d1\u5b66\u8ba1\u7b97\u3001\u5de5\u7a0b\u8bbe\u8ba1\u8fd8\u662f\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\uff0c\u5706\u5468\u7387\u03c0\u90fd\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u5e38\u91cf\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u51e0\u4e2a\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\uff0c\u5c55\u793a\u5982\u4f55\u5728\u8fd9\u4e9b\u573a\u666f\u4e2d\u4f7f\u7528\u5706\u5468\u7387\u03c0\u3002<\/p>\n<\/p>\n<p><p>\u8ba1\u7b97\u5706\u7684\u5468\u957f\u548c\u9762\u79ef<\/p>\n<\/p>\n<p><p>\u5706\u7684\u5468\u957f\u548c\u9762\u79ef\u662f\u6700\u57fa\u672c\u7684\u51e0\u4f55\u8ba1\u7b97\u4e4b\u4e00\u3002\u5df2\u77e5\u5706\u7684\u534a\u5f84r\uff0c\u53ef\u4ee5\u4f7f\u7528\u5706\u5468\u7387\u03c0\u8ba1\u7b97\u5706\u7684\u5468\u957fC\u548c\u9762\u79efA\uff0c\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>r = 5<\/p>\n<p>C = 2 * math.pi * r<\/p>\n<p>A = math.pi * r  2<\/p>\n<p>print(&quot;\u5468\u957f:&quot;, C)<\/p>\n<p>print(&quot;\u9762\u79ef:&quot;, A)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u8ba1\u7b97\u5728\u8bb8\u591a\u5de5\u7a0b\u8bbe\u8ba1\u548c\u79d1\u5b66\u7814\u7a76\u4e2d\u90fd\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u4f8b\u5982\u673a\u68b0\u8bbe\u8ba1\u4e2d\u7684\u9f7f\u8f6e\u8ba1\u7b97\u3001\u571f\u6728\u5de5\u7a0b\u4e2d\u7684\u6865\u6881\u8bbe\u8ba1\u7b49\u3002<\/p>\n<\/p>\n<p><p>\u8ba1\u7b97\u5706\u67f1\u548c\u5706\u9525\u7684\u4f53\u79ef<\/p>\n<\/p>\n<p><p>\u5706\u67f1\u548c\u5706\u9525\u7684\u4f53\u79ef\u8ba1\u7b97\u4e5f\u9700\u8981\u4f7f\u7528\u5706\u5468\u7387\u03c0\u3002\u5df2\u77e5\u5706\u67f1\u7684\u5e95\u9762\u534a\u5f84r\u548c\u9ad8h\uff0c\u53ef\u4ee5\u8ba1\u7b97\u5706\u67f1\u7684\u4f53\u79efV\uff1b\u5df2\u77e5\u5706\u9525\u7684\u5e95\u9762\u534a\u5f84r\u548c\u9ad8h\uff0c\u53ef\u4ee5\u8ba1\u7b97\u5706\u9525\u7684\u4f53\u79efV\uff0c\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>r = 3<\/p>\n<p>h = 10<\/p>\n<p>V_cylinder = math.pi * r  2 * h<\/p>\n<p>V_cone = (1\/3) * math.pi * r  2 * h<\/p>\n<p>print(&quot;\u5706\u67f1\u4f53\u79ef:&quot;, V_cylinder)<\/p>\n<p>print(&quot;\u5706\u9525\u4f53\u79ef:&quot;, V_cone)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e9b\u8ba1\u7b97\u5728\u5efa\u7b51\u5de5\u7a0b\u3001\u5236\u9020\u4e1a\u548c\u822a\u7a7a\u822a\u5929\u7b49\u9886\u57df\u90fd\u6709\u91cd\u8981\u5e94\u7528\u3002\u4f8b\u5982\uff0c\u8ba1\u7b97\u6db2\u4f53\u50a8\u7f50\u7684\u5bb9\u79ef\u3001\u8bbe\u8ba1\u706b\u7bad\u71c3\u6599\u8231\u7b49\u3002<\/p>\n<\/p>\n<p><p>\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u4e2d\u7684\u5706\u5468\u7387<\/p>\n<\/p>\n<p><p>\u5728\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u4e2d\uff0c\u5706\u5468\u7387\u03c0\u540c\u6837\u626e\u6f14\u7740\u91cd\u8981\u89d2\u8272\u3002\u7ed8\u5236\u5706\u5f62\u3001\u7403\u4f53\u548c\u5176\u4ed6\u51e0\u4f55\u56fe\u5f62\u90fd\u9700\u8981\u4f7f\u7528\u5706\u5468\u7387\u03c0\u3002\u4f8b\u5982\uff0c\u5728\u4f7f\u7528Pygame\u5e93\u7ed8\u5236\u4e00\u4e2a\u5706\u5f62\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pygame<\/p>\n<p>import math<\/p>\n<p>pygame.init()<\/p>\n<p>screen = pygame.display.set_mode((400, 400))<\/p>\n<p>pygame.display.set_caption(&#39;Draw Circle&#39;)<\/p>\n<p>running = True<\/p>\n<p>while running:<\/p>\n<p>    for event in pygame.event.get():<\/p>\n<p>        if event.type == pygame.QUIT:<\/p>\n<p>            running = False<\/p>\n<p>    screen.fill((255, 255, 255))<\/p>\n<p>    pygame.draw.circle(screen, (0, 0, 255), (200, 200), 100)<\/p>\n<p>    pygame.display.flip()<\/p>\n<p>pygame.quit()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u867d\u7136\u6ca1\u6709\u76f4\u63a5\u4f7f\u7528math.pi\uff0c\u4f46\u7ed8\u5236\u5706\u5f62\u7684\u7b97\u6cd5\u4e2d\u9690\u542b\u4e86\u5706\u5468\u7387\u03c0\u7684\u6982\u5ff5\u3002\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u4e2d\u7684\u8bb8\u591a\u7b97\u6cd5\uff0c\u5982\u5149\u7ebf\u8ffd\u8e2a\u3001\u7eb9\u7406\u6620\u5c04\u7b49\uff0c\u90fd\u79bb\u4e0d\u5f00\u5706\u5468\u7387\u03c0\u3002<\/p>\n<\/p>\n<p><p>\u516d\u3001\u5706\u5468\u7387\u7684\u9ad8\u7cbe\u5ea6\u8ba1\u7b97<\/p>\n<\/p>\n<p><p>\u5728\u4e00\u4e9b\u79d1\u5b66\u8ba1\u7b97\u548c\u5de5\u7a0b\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u66f4\u9ad8\u7cbe\u5ea6\u7684\u5706\u5468\u7387\u3002\u8fd9\u65f6\u53ef\u4ee5\u4f7f\u7528mpmath\u5e93\u6765\u8fdb\u884c\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import mpmath<\/p>\n<p>mpmath.mp.dps = 50  # \u8bbe\u7f6e\u5c0f\u6570\u70b9\u540e\u7cbe\u5ea6\u4e3a50\u4f4d<\/p>\n<p>pi_high_precision = mpmath.mp.pi<\/p>\n<p>print(pi_high_precision)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u8bbe\u7f6empmath\u5e93\u7684\u7cbe\u5ea6\uff0c\u53ef\u4ee5\u83b7\u53d6\u4efb\u610f\u7cbe\u5ea6\u7684\u5706\u5468\u7387\u3002\u8fd9\u5bf9\u4e8e\u4e00\u4e9b\u5bf9\u7cbe\u5ea6\u8981\u6c42\u6781\u9ad8\u7684\u5e94\u7528\u573a\u666f\uff0c\u5982\u5929\u6587\u5b66\u3001\u7269\u7406\u5b66\u548c\u91d1\u878d\u5de5\u7a0b\u7b49\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u5728\u5929\u6587\u5b66\u4e2d\uff0c\u8ba1\u7b97\u884c\u661f\u8f68\u9053\u3001\u6052\u661f\u4f4d\u7f6e\u7b49\u90fd\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u5706\u5468\u7387\u3002<\/p>\n<\/p>\n<p><p>\u4e03\u3001\u5706\u5468\u7387\u7684\u5386\u53f2\u548c\u6570\u5b66\u610f\u4e49<\/p>\n<\/p>\n<p><p>\u5706\u5468\u7387\u03c0\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6570\u5b66\u5e38\u6570\uff0c\u5176\u5386\u53f2\u53ef\u4ee5\u8ffd\u6eaf\u5230\u53e4\u4ee3\u3002\u65e9\u5728\u51e0\u5343\u5e74\u524d\uff0c\u53e4\u57c3\u53ca\u3001\u53e4\u5df4\u6bd4\u4f26\u548c\u53e4\u5e0c\u814a\u7684\u6570\u5b66\u5bb6\u4eec\u5c31\u5df2\u7ecf\u5f00\u59cb\u7814\u7a76\u5706\u5468\u7387\u3002\u5706\u5468\u7387\u7684\u6570\u5b66\u610f\u4e49\u4e5f\u975e\u5e38\u6df1\u8fdc\uff0c\u5b83\u4e0d\u4ec5\u662f\u5706\u7684\u5468\u957f\u4e0e\u76f4\u5f84\u7684\u6bd4\u503c\uff0c\u8fd8\u51fa\u73b0\u5728\u8bb8\u591a\u6570\u5b66\u516c\u5f0f\u548c\u5b9a\u7406\u4e2d\uff0c\u5982\u6b27\u62c9\u516c\u5f0f\u3001\u5085\u91cc\u53f6\u53d8\u6362\u7b49\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\u8868\u793a\u5706\u5468\u7387\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u3002\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u5176\u4f18\u70b9\u662f\u7b80\u5355\u3001\u76f4\u63a5\uff0c\u5e76\u4e14\u7cbe\u5ea6\u8db3\u591f\u9ad8\u3002\u5bf9\u4e8e\u9700\u8981\u5904\u7406\u5927\u89c4\u6a21\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u3002\u5982\u679c\u4e0d\u5e0c\u671b\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u5e93\uff0c\u53ef\u4ee5\u624b\u52a8\u5b9a\u4e49\u5706\u5468\u7387\u3002\u5bf9\u4e8e\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528mpmath\u5e93\u4e2d\u7684mp.pi\u5e38\u91cf\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5706\u5468\u7387\u03c0\u7684\u8868\u793a\u548c\u4f7f\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u6db5\u76d6\u4e86\u79d1\u5b66\u8ba1\u7b97\u3001\u5de5\u7a0b\u8bbe\u8ba1\u3001\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u7b49\u9886\u57df\u3002\u4e86\u89e3\u5706\u5468\u7387\u7684\u5386\u53f2\u548c\u6570\u5b66\u610f\u4e49\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u5176\u5728\u73b0\u4ee3\u79d1\u5b66\u548c\u5de5\u7a0b\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u83b7\u53d6\u5706\u5468\u7387\u7684\u503c\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684<code>math<\/code>\u6a21\u5757\u6765\u83b7\u53d6\u5706\u5468\u7387\u7684\u503c\u3002\u901a\u8fc7<code>import math<\/code>\u8bed\u53e5\u5bfc\u5165\u8be5\u6a21\u5757\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>math.pi<\/code>\u6765\u83b7\u5f97\u5706\u5468\u7387\u7684\u7cbe\u786e\u503c\uff0c\u901a\u5e38\u4e3a3.14159\u3002\u8fd9\u79cd\u65b9\u5f0f\u975e\u5e38\u7b80\u5355\u4e14\u5e38\u7528\uff0c\u9002\u5408\u5927\u591a\u6570\u9700\u8981\u5706\u5468\u7387\u7684\u573a\u666f\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u662f\u5426\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5706\u5468\u7387\u7684\u7cbe\u786e\u5ea6\uff1f<\/strong><br \/>\u662f\u7684\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u81ea\u5b9a\u4e49\u5706\u5468\u7387\u7684\u7cbe\u786e\u5ea6\u3002\u901a\u8fc7\u4f7f\u7528<code>decimal<\/code>\u6a21\u5757\uff0c\u4f60\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5177\u6709\u4efb\u610f\u7cbe\u5ea6\u7684\u5706\u5468\u7387\u8868\u793a\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u7cbe\u5ea6\u4e3a50\u4f4d\u6570\u5b57\uff0c\u8fd9\u5728\u8fdb\u884c\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u65f6\u975e\u5e38\u6709\u7528\u3002\u5177\u4f53\u5b9e\u73b0\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528<code>getcontext().prec<\/code>\u6765\u8bbe\u7f6e\u7cbe\u5ea6\uff0c\u5e76\u901a\u8fc7\u8ba1\u7b97\u6216\u5f15\u5165\u7b97\u6cd5\u6765\u83b7\u5f97\u5706\u5468\u7387\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u4f7f\u7528\u5706\u5468\u7387\u8fdb\u884c\u8ba1\u7b97\u65f6\u6709\u54ea\u4e9b\u5e38\u89c1\u7684\u6ce8\u610f\u4e8b\u9879\uff1f<\/strong><br \/>\u4f7f\u7528\u5706\u5468\u7387\u8fdb\u884c\u8ba1\u7b97\u65f6\uff0c\u9700\u6ce8\u610f\u8ba1\u7b97\u7684\u7cbe\u5ea6\u548c\u6570\u636e\u7c7b\u578b\u3002\u5728\u8fdb\u884c\u6d6e\u70b9\u6570\u8fd0\u7b97\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u7cbe\u5ea6\u4e22\u5931\u7684\u95ee\u9898\uff0c\u56e0\u6b64\u5728\u6d89\u53ca\u9ad8\u7cbe\u5ea6\u7684\u6570\u5b66\u8ba1\u7b97\u65f6\uff0c\u63a8\u8350\u4f7f\u7528<code>decimal<\/code>\u6a21\u5757\u3002\u6b64\u5916\uff0c\u8981\u786e\u4fdd\u4f7f\u7528\u7684\u6570\u5b66\u516c\u5f0f\u548c\u7b97\u6cd5\u662f\u51c6\u786e\u7684\uff0c\u4ee5\u907f\u514d\u56e0\u4e3a\u5706\u5468\u7387\u7684\u8fd1\u4f3c\u503c\u800c\u5bfc\u81f4\u7684\u8ba1\u7b97\u8bef\u5dee\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u8868\u793a\u5706\u5468\u7387\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u4f7f\u7528\u5185\u7f6emath\u6a21\u5757\u4e2d\u7684pi\u5e38\u91cf\u3001\u4f7f\u7528numpy\u6a21\u5757\u4e2d\u7684pi [&hellip;]","protected":false},"author":3,"featured_media":1025746,"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\/1025744"}],"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=1025744"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1025744\/revisions"}],"predecessor-version":[{"id":1025747,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1025744\/revisions\/1025747"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1025746"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1025744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1025744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1025744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}