{"id":1073926,"date":"2025-01-08T11:30:02","date_gmt":"2025-01-08T03:30:02","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1073926.html"},"modified":"2025-01-08T11:30:04","modified_gmt":"2025-01-08T03:30:04","slug":"%e5%a6%82%e4%bd%95%e7%94%a8python%e8%be%93%e5%87%ba%e8%a1%a8%e8%be%be%e5%bc%8f-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1073926.html","title":{"rendered":"\u5982\u4f55\u7528python\u8f93\u51fa\u8868\u8fbe\u5f0f"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25103713\/39bd9bdc-e712-4759-8d20-0f9acb510bfe.webp\" alt=\"\u5982\u4f55\u7528python\u8f93\u51fa\u8868\u8fbe\u5f0f\" \/><\/p>\n<p><p> <strong>\u4f7f\u7528Python\u8f93\u51fa\u8868\u8fbe\u5f0f\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528print\u51fd\u6570\u3001\u901a\u8fc7\u53d8\u91cf\u8fdb\u884c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u6216\u8005\u4f7f\u7528\u66f4\u9ad8\u7ea7\u7684\u5e93\u5982SymPy\u6765\u5904\u7406\u7b26\u53f7\u8868\u8fbe\u5f0f\u3002<\/strong> \u5176\u4e2d\uff0c\u4f7f\u7528print\u51fd\u6570\u662f\u6700\u57fa\u672c\u7684\u65b9\u6cd5\uff0c\u800cSymPy\u5e93\u5219\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u7b26\u53f7\u8ba1\u7b97\u529f\u80fd\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u51e0\u79cd\u65b9\u6cd5\uff0c\u5e76\u5c55\u793a\u5982\u4f55\u5728\u4e0d\u540c\u573a\u666f\u4e2d\u5e94\u7528\u5b83\u4eec\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528print\u51fd\u6570<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528<code>print<\/code>\u51fd\u6570\u662fPython\u4e2d\u6700\u7b80\u5355\u7684\u8f93\u51fa\u65b9\u6cd5\u3002\u4f60\u53ef\u4ee5\u76f4\u63a5\u5c06\u8868\u8fbe\u5f0f\u4f5c\u4e3a\u5b57\u7b26\u4e32\u4f20\u9012\u7ed9<code>print<\/code>\u51fd\u6570\u8fdb\u884c\u8f93\u51fa\u3002<\/p>\n<\/p>\n<p><h4>\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n<p><pre><code class=\"language-python\">expression = &quot;3 * (2 + 5)&quot;<\/p>\n<p>print(expression)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/h4>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c<code>expression<\/code>\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5305\u542b\u4e86\u6211\u4eec\u60f3\u8981\u8f93\u51fa\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\u3002\u4f7f\u7528<code>print<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5c06\u5176\u76f4\u63a5\u6253\u5370\u5230\u63a7\u5236\u53f0\u3002\u8fd9\u4e2a\u65b9\u6cd5\u9002\u7528\u4e8e\u7b80\u5355\u7684\u573a\u666f\uff0c\u7279\u522b\u662f\u5f53\u4f60\u9700\u8981\u8f93\u51fa\u56fa\u5b9a\u7684\u8868\u8fbe\u5f0f\u65f6\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528f-strings\u8fdb\u884c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/h3>\n<\/p>\n<p><p>Python 3.6\u53ca\u4ee5\u4e0a\u7248\u672c\u652f\u6301f-strings\uff08\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\uff09\uff0c\u8fd9\u662f\u4e00\u79cd\u66f4\u7b80\u6d01\u548c\u76f4\u89c2\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u5b57\u7b26\u4e32\u4e2d\u5d4c\u5165\u53d8\u91cf\u548c\u8868\u8fbe\u5f0f\u3002<\/p>\n<\/p>\n<p><h4>\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n<p><pre><code class=\"language-python\">a = 3<\/p>\n<p>b = 2<\/p>\n<p>c = 5<\/p>\n<p>expression = f&quot;{a} * ({b} + {c})&quot;<\/p>\n<p>print(expression)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/h4>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528f-strings\u5c06\u53d8\u91cf\u5d4c\u5165\u5230\u5b57\u7b26\u4e32\u4e2d\u3002<code>{}<\/code>\u5185\u7684\u5185\u5bb9\u4f1a\u88ab\u76f8\u5e94\u53d8\u91cf\u7684\u503c\u66ff\u6362\u3002\u8fd9\u6837\u4e0d\u4ec5\u4f7f\u8868\u8fbe\u5f0f\u7684\u8f93\u51fa\u66f4\u4e3a\u7075\u6d3b\uff0c\u8fd8\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528SymPy\u5e93<\/h3>\n<\/p>\n<p><p>SymPy\u662f\u4e00\u4e2aPython\u5e93\uff0c\u4e13\u95e8\u7528\u4e8e\u7b26\u53f7\u6570\u5b66\u8ba1\u7b97\u3002\u5b83\u53ef\u4ee5\u5904\u7406\u7b26\u53f7\u8868\u8fbe\u5f0f\u5e76\u8fdb\u884c\u5404\u79cd\u6570\u5b66\u8fd0\u7b97\uff0c\u540c\u65f6\u63d0\u4f9b\u4e86\u683c\u5f0f\u5316\u8f93\u51fa\u529f\u80fd\u3002<\/p>\n<\/p>\n<p><h4>\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n<p><pre><code class=\"language-python\">from sympy import symbols, expand<\/p>\n<p>x, y = symbols(&#39;x y&#39;)<\/p>\n<p>expression = expand((x + y)  2)<\/p>\n<p>print(expression)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/h4>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5bfc\u5165\u4e86SymPy\u5e93\uff0c\u5e76\u4f7f\u7528<code>symbols<\/code>\u51fd\u6570\u5b9a\u4e49\u4e86\u7b26\u53f7\u53d8\u91cf<code>x<\/code>\u548c<code>y<\/code>\u3002\u7136\u540e\u4f7f\u7528<code>expand<\/code>\u51fd\u6570\u5c55\u5f00\u4e86\u8868\u8fbe\u5f0f<code>(x + y)  2<\/code>\uff0c\u5e76\u901a\u8fc7<code>print<\/code>\u51fd\u6570\u8f93\u51fa\u7ed3\u679c\u3002SymPy\u53ef\u4ee5\u5904\u7406\u66f4\u590d\u6742\u7684\u7b26\u53f7\u6570\u5b66\u95ee\u9898\uff0c\u662f\u8fdb\u884c\u6570\u5b66\u8ba1\u7b97\u548c\u8f93\u51fa\u7684\u5f3a\u5927\u5de5\u5177\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5e94\u7528\u573a\u666f\u4e0e\u9ad8\u7ea7\u4f7f\u7528<\/h3>\n<\/p>\n<p><h4>1\u3001\u79d1\u5b66\u8ba1\u7b97\u4e0e\u5de5\u7a0b\u5e94\u7528<\/h4>\n<\/p>\n<p><p>\u5728\u79d1\u5b66\u8ba1\u7b97\u548c\u5de5\u7a0b\u5e94\u7528\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u5904\u7406\u590d\u6742\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\u3002SymPy\u5e93\u4e0d\u4ec5\u53ef\u4ee5\u8f93\u51fa\u8868\u8fbe\u5f0f\uff0c\u8fd8\u53ef\u4ee5\u8fdb\u884c\u5fae\u79ef\u5206\u3001\u77e9\u9635\u8fd0\u7b97\u3001\u65b9\u7a0b\u6c42\u89e3\u7b49\u9ad8\u7ea7\u6570\u5b66\u8fd0\u7b97\u3002<\/p>\n<\/p>\n<p><h4>\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n<p><pre><code class=\"language-python\">from sympy import integrate, sin<\/p>\n<p>x = symbols(&#39;x&#39;)<\/p>\n<p>expression = integrate(sin(x) * x, x)<\/p>\n<p>print(expression)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u52a8\u6001\u751f\u6210\u4e0e\u8f93\u51fa\u8868\u8fbe\u5f0f<\/h4>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u7528\u6237\u8f93\u5165\u6216\u5176\u4ed6\u52a8\u6001\u6570\u636e\u751f\u6210\u548c\u8f93\u51fa\u8868\u8fbe\u5f0f\u3002\u7ed3\u5408f-strings\u548cSymPy\uff0c\u53ef\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u52a8\u6001\u751f\u6210\u903b\u8f91\u3002<\/p>\n<\/p>\n<p><h4>\u793a\u4f8b\uff1a<\/h4>\n<\/p>\n<p><pre><code class=\"language-python\">from sympy import symbols, expand<\/p>\n<p>def generate_expression(a, b):<\/p>\n<p>    x, y = symbols(&#39;x y&#39;)<\/p>\n<p>    return expand((a * x + b * y)  2)<\/p>\n<p>a = 2<\/p>\n<p>b = 3<\/p>\n<p>expression = generate_expression(a, b)<\/p>\n<p>print(expression)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u5728Python\u4e2d\u7075\u6d3b\u5730\u8f93\u51fa\u8868\u8fbe\u5f0f\u3002<strong>\u4f7f\u7528<code>print<\/code>\u51fd\u6570\u3001\u901a\u8fc7\u53d8\u91cf\u8fdb\u884c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/strong>\uff0c\u4ee5\u53ca<strong>\u4f7f\u7528SymPy\u5e93\u5904\u7406\u7b26\u53f7\u8868\u8fbe\u5f0f<\/strong>\uff0c\u53ef\u4ee5\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u4e0b\u7684\u9700\u6c42\u3002\u6839\u636e\u5177\u4f53\u5e94\u7528\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3001\u6613\u8bfb\u548c\u5f3a\u5927\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u4f7f\u7528Python\u6253\u5370\u6570\u5b66\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684<code>print()<\/code>\u51fd\u6570\u6765\u8f93\u51fa\u6570\u5b66\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c\u3002\u4f60\u53ef\u4ee5\u76f4\u63a5\u5728<code>print()<\/code>\u4e2d\u8f93\u5165\u8868\u8fbe\u5f0f\uff0c\u4f8b\u5982\uff1a<code>print(2 + 3 * 5)<\/code>\uff0c\u8fd9\u5c06\u8f93\u51fa\u8868\u8fbe\u5f0f\u7684\u8ba1\u7b97\u7ed3\u679c\u3002\u4e3a\u4e86\u63d0\u9ad8\u53ef\u8bfb\u6027\uff0c\u4f7f\u7528\u62ec\u53f7\u6765\u660e\u786e\u8fd0\u7b97\u987a\u5e8f\u4e5f\u662f\u4e00\u4e2a\u597d\u4e3b\u610f\uff0c\u6bd4\u5982<code>print((2 + 3) * 5)<\/code>\u3002<\/p>\n<p><strong>\u80fd\u5426\u5728Python\u4e2d\u8f93\u51fa\u590d\u6742\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\uff1f<\/strong><br \/>\u5f53\u7136\u53ef\u4ee5\u3002\u5728Python\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528<code>sympy<\/code>\u5e93\u6765\u521b\u5efa\u548c\u8f93\u51fa\u590d\u6742\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\u3002\u901a\u8fc7\u5b89\u88c5<code>sympy<\/code>\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5b83\u7684\u7b26\u53f7\u8ba1\u7b97\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>from sympy import symbols, expand<\/code>\uff0c\u4f60\u53ef\u4ee5\u5b9a\u4e49\u7b26\u53f7\u5e76\u5c55\u5f00\u8868\u8fbe\u5f0f\uff0c\u7136\u540e\u4f7f\u7528<code>print()<\/code>\u8f93\u51fa\u3002\u4f8b\u5982\uff1a  <\/p>\n<pre><code class=\"language-python\">from sympy import symbols, expand  \nx, y = symbols(&#39;x y&#39;)  \nexpr = (x + y) ** 2  \nprint(expand(expr))  \n<\/code><\/pre>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u683c\u5f0f\u5316\u8f93\u51fa\u8868\u8fbe\u5f0f\u4ee5\u63d0\u9ad8\u53ef\u8bfb\u6027\uff1f<\/strong><br \/>\u683c\u5f0f\u5316\u8f93\u51fa\u53ef\u4ee5\u901a\u8fc7<code>f-string<\/code>\u6216<code>format()<\/code>\u65b9\u6cd5\u6765\u5b9e\u73b0\uff0c\u4f7f\u7ed3\u679c\u66f4\u52a0\u6613\u4e8e\u7406\u89e3\u3002\u4f7f\u7528f-string\u65f6\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a  <\/p>\n<pre><code class=\"language-python\">a = 5  \nb = 10  \nresult = a + b  \nprint(f&#39;The result of {a} + {b} is {result}.&#39;)  \n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u5f0f\u4f7f\u5f97\u8f93\u51fa\u7684\u5185\u5bb9\u66f4\u52a0\u76f4\u89c2\uff0c\u4fbf\u4e8e\u7528\u6237\u5feb\u901f\u7406\u89e3\u8868\u8fbe\u5f0f\u7684\u542b\u4e49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4f7f\u7528Python\u8f93\u51fa\u8868\u8fbe\u5f0f\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528print\u51fd\u6570\u3001\u901a\u8fc7\u53d8\u91cf\u8fdb\u884c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u6216\u8005\u4f7f\u7528\u66f4 [&hellip;]","protected":false},"author":3,"featured_media":1073932,"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\/1073926"}],"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=1073926"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1073926\/revisions"}],"predecessor-version":[{"id":1073933,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1073926\/revisions\/1073933"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1073932"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1073926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1073926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1073926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}