{"id":1071907,"date":"2025-01-08T11:11:30","date_gmt":"2025-01-08T03:11:30","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1071907.html"},"modified":"2025-01-08T11:11:32","modified_gmt":"2025-01-08T03:11:32","slug":"python%e4%bd%a0%e5%a6%82%e4%bd%95%e4%bf%9d%e7%95%99%e5%b0%8f%e6%95%b0%e4%bd%8d%e6%95%b0-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1071907.html","title":{"rendered":"python\u4f60\u5982\u4f55\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25102300\/43856481-80c3-40d6-80cb-a11b9e8591cf.webp\" alt=\"python\u4f60\u5982\u4f55\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\" \/><\/p>\n<p><p> \u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\uff0c<strong>\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528round()\u51fd\u6570\u3001\u4f7f\u7528Decimal\u6a21\u5757<\/strong>\u3002\u5176\u4e2d\uff0c<strong>\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/strong>\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u5b83\u4e0d\u4ec5\u7b80\u5355\u6613\u7528\uff0c\u800c\u4e14\u975e\u5e38\u7075\u6d3b\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u79cd\u65b9\u6cd5\uff0c\u5e76\u5728\u6b63\u6587\u4e2d\u5bf9\u5176\u4ed6\u65b9\u6cd5\u8fdb\u884c\u8bf4\u660e\u548c\u6bd4\u8f83\u3002<\/p>\n<\/p>\n<p><p>\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u53ef\u4ee5\u901a\u8fc7<code>format()<\/code>\u51fd\u6570\u6216<code>f-string<\/code>\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u5c06\u4e00\u4e2a\u6d6e\u70b9\u6570\u4fdd\u7559\u5230\u5c0f\u6570\u70b9\u540e\u4e24\u4f4d\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = 3.14159<\/p>\n<p>formatted_num = &quot;{:.2f}&quot;.format(num)<\/p>\n<p>print(formatted_num)  # \u8f93\u51fa: 3.14<\/p>\n<p>formatted_num_f = f&quot;{num:.2f}&quot;<\/p>\n<p>print(formatted_num_f)  # \u8f93\u51fa: 3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u5728Python\u4e2d\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\u7684\u4e0d\u540c\u65b9\u6cd5\u548c\u5b83\u4eec\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<h2><strong>\u4e00\u3001\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/strong><\/h2>\n<p><p>\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u662fPython\u4e2d\u4e00\u79cd\u975e\u5e38\u7075\u6d3b\u548c\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u6570\u5b57\u65f6\u3002\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u63a7\u5236\u8f93\u51fa\u7684\u7cbe\u5ea6\u548c\u683c\u5f0f\u3002<\/p>\n<\/p>\n<p><h2>1\u3001\u4f7f\u7528<code>format()<\/code>\u51fd\u6570<\/h2>\n<\/p>\n<p><p><code>format()<\/code>\u51fd\u6570\u662fPython\u4e2d\u4e00\u4e2a\u5f3a\u5927\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u5de5\u5177\u3002\u901a\u8fc7\u5b83\uff0c\u4f60\u53ef\u4ee5\u63a7\u5236\u8f93\u51fa\u7684\u7cbe\u5ea6\u548c\u683c\u5f0f\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = 3.14159<\/p>\n<p>formatted_num = &quot;{:.2f}&quot;.format(num)<\/p>\n<p>print(formatted_num)  # \u8f93\u51fa: 3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c<code>{:.2f}<\/code>\u8868\u793a\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u5c0f\u6570\u70b9\u540e\u4e24\u4f4d\u7684\u6d6e\u70b9\u6570\u3002\u4f60\u8fd8\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8c03\u6574\u5c0f\u6570\u4f4d\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = 3.14159<\/p>\n<p>formatted_num = &quot;{:.3f}&quot;.format(num)<\/p>\n<p>print(formatted_num)  # \u8f93\u51fa: 3.142<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>2\u3001\u4f7f\u7528f-string<\/h2>\n<\/p>\n<p><p>f-string\uff08\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\uff09\u662fPython 3.6\u5f15\u5165\u7684\u4e00\u4e2a\u65b0\u7279\u6027\uff0c\u5b83\u4f7f\u5f97\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u53d8\u5f97\u66f4\u52a0\u7b80\u6d01\u548c\u76f4\u89c2\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = 3.14159<\/p>\n<p>formatted_num = f&quot;{num:.2f}&quot;<\/p>\n<p>print(formatted_num)  # \u8f93\u51fa: 3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>f-string\u7684\u8bed\u6cd5\u975e\u5e38\u76f4\u89c2\uff0c\u53ea\u9700\u5728\u5b57\u7b26\u4e32\u524d\u52a0\u4e0a\u4e00\u4e2a<code>f<\/code>\u6216<code>F<\/code>\uff0c\u7136\u540e\u5728\u5927\u62ec\u53f7<code>{}<\/code>\u4e2d\u6307\u5b9a\u9700\u8981\u683c\u5f0f\u5316\u7684\u53d8\u91cf\u548c\u683c\u5f0f\u3002<\/p>\n<\/p>\n<h2><strong>\u4e8c\u3001\u4f7f\u7528round()\u51fd\u6570<\/strong><\/h2>\n<p><p><code>round()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u51fd\u6570\u4e4b\u4e00\uff0c\u7528\u4e8e\u5c06\u6570\u5b57\u56db\u820d\u4e94\u5165\u5230\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = 3.14159<\/p>\n<p>rounded_num = round(num, 2)<\/p>\n<p>print(rounded_num)  # \u8f93\u51fa: 3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>round()<\/code>\u51fd\u6570\u6709\u4e24\u4e2a\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u8981\u56db\u820d\u4e94\u5165\u7684\u6570\u5b57\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u8981\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>round()<\/code>\u51fd\u6570\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u6d6e\u70b9\u6570\u3002<\/p>\n<\/p>\n<p><p>\u5c3d\u7ba1<code>round()<\/code>\u51fd\u6570\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5b83\u53ef\u80fd\u4f1a\u5f15\u5165\u6d6e\u70b9\u7cbe\u5ea6\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u5728\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u5408\uff0c\u5efa\u8bae\u4f7f\u7528<code>Decimal<\/code>\u6a21\u5757\u3002<\/p>\n<\/p>\n<h2><strong>\u4e09\u3001\u4f7f\u7528Decimal\u6a21\u5757<\/strong><\/h2>\n<p><p><code>Decimal<\/code>\u6a21\u5757\u662fPython\u6807\u51c6\u5e93\u4e2d\u7684\u4e00\u4e2a\u6a21\u5757\uff0c\u63d0\u4f9b\u4e86\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u7cbe\u786e\u63a7\u5236\u7684\u529f\u80fd\u3002\u5b83\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\uff0c\u4f8b\u5982\u91d1\u878d\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><h2>1\u3001\u521b\u5efaDecimal\u5bf9\u8c61<\/h2>\n<\/p>\n<p><p>\u8981\u4f7f\u7528<code>Decimal<\/code>\u6a21\u5757\uff0c\u9996\u5148\u9700\u8981\u5bfc\u5165\u5b83\uff0c\u5e76\u5c06\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a<code>Decimal<\/code>\u5bf9\u8c61\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from decimal import Decimal<\/p>\n<p>num = Decimal(&#39;3.14159&#39;)<\/p>\n<p>print(num)  # \u8f93\u51fa: 3.14159<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>2\u3001\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570<\/h2>\n<\/p>\n<p><p>\u4f60\u53ef\u4ee5\u4f7f\u7528<code>Decimal<\/code>\u5bf9\u8c61\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u5c0f\u6570\u4f4d\u6570\uff0c\u4f8b\u5982<code>quantize()<\/code>\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from decimal import Decimal, ROUND_HALF_UP<\/p>\n<p>num = Decimal(&#39;3.14159&#39;)<\/p>\n<p>rounded_num = num.quantize(Decimal(&#39;0.01&#39;), rounding=ROUND_HALF_UP)<\/p>\n<p>print(rounded_num)  # \u8f93\u51fa: 3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c<code>quantize()<\/code>\u65b9\u6cd5\u7528\u4e8e\u5c06<code>Decimal<\/code>\u5bf9\u8c61\u56db\u820d\u4e94\u5165\u5230\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002<code>Decimal(&#39;0.01&#39;)<\/code>\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\uff0c<code>ROUND_HALF_UP<\/code>\u8868\u793a\u4f7f\u7528\u56db\u820d\u4e94\u5165\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<h2><strong>\u56db\u3001\u4f7f\u7528numpy\u5e93<\/strong><\/h2>\n<p><p>\u5982\u679c\u4f60\u6b63\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u6216\u8005\u8fdb\u884c\u79d1\u5b66\u8ba1\u7b97\uff0c<code>numpy<\/code>\u5e93\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\u3002<code>numpy<\/code>\u5e93\u63d0\u4f9b\u4e86\u8bb8\u591a\u65b9\u4fbf\u7684\u51fd\u6570\u6765\u5904\u7406\u6570\u7ec4\u548c\u6570\u503c\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><h2>1\u3001\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570<\/h2>\n<\/p>\n<p><p>\u4f60\u53ef\u4ee5\u4f7f\u7528<code>numpy<\/code>\u7684<code>round()<\/code>\u51fd\u6570\u6765\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>num = 3.14159<\/p>\n<p>rounded_num = np.round(num, 2)<\/p>\n<p>print(rounded_num)  # \u8f93\u51fa: 3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>np.round()<\/code>\u51fd\u6570\u7684\u7528\u6cd5\u4e0e\u5185\u7f6e\u7684<code>round()<\/code>\u51fd\u6570\u7c7b\u4f3c\uff0c\u4f46\u5b83\u53ef\u4ee5\u5904\u7406\u6570\u7ec4\u548c\u66f4\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<p><h2>2\u3001\u5904\u7406\u6570\u7ec4<\/h2>\n<\/p>\n<p><p>\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u6570\u5b57\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528<code>np.round()<\/code>\u51fd\u6570\u6765\u4fdd\u7559\u6bcf\u4e2a\u5143\u7d20\u7684\u5c0f\u6570\u4f4d\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>arr = np.array([3.14159, 2.71828, 1.61803])<\/p>\n<p>rounded_arr = np.round(arr, 2)<\/p>\n<p>print(rounded_arr)  # \u8f93\u51fa: [3.14 2.72 1.62]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>numpy<\/code>\u5e93\u4e0d\u4ec5\u9002\u7528\u4e8e\u5355\u4e2a\u6570\u5b57\uff0c\u8fd8\u53ef\u4ee5\u65b9\u4fbf\u5730\u5904\u7406\u5305\u542b\u591a\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\u3002<\/p>\n<\/p>\n<h2><strong>\u4e94\u3001\u6bd4\u8f83\u4e0d\u540c\u65b9\u6cd5<\/strong><\/h2>\n<p><p>\u4e0d\u540c\u7684\u65b9\u6cd5\u5728\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\u65f6\u5404\u6709\u4f18\u7f3a\u70b9\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u548c\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h2>1\u3001\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/h2>\n<\/p>\n<p><p><strong>\u4f18\u70b9\uff1a<\/strong> \u7b80\u5355\u76f4\u89c2\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u5e38\u89c1\u573a\u666f\u3002<br \/><strong>\u7f3a\u70b9\uff1a<\/strong> \u4e3b\u8981\u7528\u4e8e\u8f93\u51fa\u683c\u5f0f\u5316\uff0c\u4e0d\u9002\u7528\u4e8e\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><h2>2\u3001round()\u51fd\u6570<\/h2>\n<\/p>\n<p><p><strong>\u4f18\u70b9\uff1a<\/strong> \u65b9\u4fbf\u5feb\u6377\uff0c\u9002\u7528\u4e8e\u7b80\u5355\u7684\u56db\u820d\u4e94\u5165\u9700\u6c42\u3002<br \/><strong>\u7f3a\u70b9\uff1a<\/strong> \u53ef\u80fd\u4f1a\u5f15\u5165\u6d6e\u70b9\u7cbe\u5ea6\u95ee\u9898\uff0c\u4e0d\u9002\u7528\u4e8e\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><h2>3\u3001Decimal\u6a21\u5757<\/h2>\n<\/p>\n<p><p><strong>\u4f18\u70b9\uff1a<\/strong> \u63d0\u4f9b\u9ad8\u7cbe\u5ea6\u63a7\u5236\uff0c\u9002\u7528\u4e8e\u91d1\u878d\u8ba1\u7b97\u7b49\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u573a\u666f\u3002<br \/><strong>\u7f3a\u70b9\uff1a<\/strong> \u76f8\u5bf9\u590d\u6742\uff0c\u6027\u80fd\u53ef\u80fd\u4e0d\u5982\u5176\u4ed6\u65b9\u6cd5\u9ad8\u3002<\/p>\n<\/p>\n<p><h2>4\u3001numpy\u5e93<\/h2>\n<\/p>\n<p><p><strong>\u4f18\u70b9\uff1a<\/strong> \u9002\u7528\u4e8e\u5904\u7406\u5927\u91cf\u6570\u636e\u548c\u6570\u7ec4\uff0c\u529f\u80fd\u5f3a\u5927\u3002<br \/><strong>\u7f3a\u70b9\uff1a<\/strong> \u9700\u8981\u989d\u5916\u5b89\u88c5\u5e93\uff0c\u9002\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u548c\u6570\u636e\u5206\u6790\u3002<\/p>\n<\/p>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p><p>\u5728Python\u4e2d\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\u7684\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u3002\u5bf9\u4e8e\u4e00\u822c\u7684\u8f93\u51fa\u683c\u5f0f\u5316\uff0c<strong>\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/strong>\u662f\u6700\u7b80\u5355\u548c\u76f4\u89c2\u7684\u65b9\u6cd5\uff1b\u5bf9\u4e8e\u7b80\u5355\u7684\u56db\u820d\u4e94\u5165\u9700\u6c42\uff0c\u53ef\u4ee5\u4f7f\u7528<code>round()<\/code>\u51fd\u6570\uff1b\u5bf9\u4e8e\u9700\u8981\u9ad8\u7cbe\u5ea6\u63a7\u5236\u7684\u573a\u666f\uff0c\u5efa\u8bae\u4f7f\u7528<code>Decimal<\/code>\u6a21\u5757\uff1b\u5bf9\u4e8e\u79d1\u5b66\u8ba1\u7b97\u548c\u5904\u7406\u5927\u91cf\u6570\u636e\uff0c<code>numpy<\/code>\u5e93\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u5de5\u5177\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u7406\u89e3\u548c\u638c\u63e1\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u7075\u6d3b\u9009\u62e9\uff0c\u786e\u4fdd\u5728Python\u4e2d\u8fdb\u884c\u6570\u503c\u5904\u7406\u65f6\u80fd\u591f\u8fbe\u5230\u9884\u671f\u6548\u679c\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u683c\u5f0f\u5316\u6570\u5b57\u4ee5\u4fdd\u7559\u7279\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u6765\u63a7\u5236\u6570\u5b57\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u901a\u8fc7\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982<code>&quot;{:.2f}&quot;.format(number)<\/code>\uff0c\u53ef\u4ee5\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u5b57\u7b26\u4e32\u3002\u6b64\u5916\uff0cf-\u5b57\u7b26\u4e32\uff08\u5982<code>f&quot;{number:.2f}&quot;<\/code>\uff09\u4e5f\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u540c\u6837\u7684\u6548\u679c\u3002<\/p>\n<p><strong>Python\u4e2d\u6709\u54ea\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u56db\u820d\u4e94\u5165\u6570\u5b57\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u4f7f\u7528\u5185\u7f6e\u7684<code>round()<\/code>\u51fd\u6570\u53ef\u4ee5\u65b9\u4fbf\u5730\u5bf9\u6570\u5b57\u8fdb\u884c\u56db\u820d\u4e94\u5165\u3002\u6b64\u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u662f\u8981\u5904\u7406\u7684\u6570\u5b57\uff0c\u7b2c\u4e8c\u4e2a\u662f\u9700\u8981\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u4f8b\u5982<code>round(5.6789, 2)<\/code>\u4f1a\u8fd4\u56de<code>5.68<\/code>\u3002\u53e6\u5916\uff0c\u4f7f\u7528<code>decimal<\/code>\u6a21\u5757\u63d0\u4f9b\u7684<code>Decimal<\/code>\u7c7b\u4e5f\u53ef\u4ee5\u8fdb\u884c\u66f4\u7cbe\u786e\u7684\u56db\u820d\u4e94\u5165\u64cd\u4f5c\u3002<\/p>\n<p><strong>\u5982\u4f55\u5904\u7406\u6d6e\u70b9\u6570\u7cbe\u5ea6\u95ee\u9898\u4ee5\u786e\u4fdd\u5c0f\u6570\u4f4d\u6570\u7684\u51c6\u786e\u6027\uff1f<\/strong><br \/>\u6d6e\u70b9\u6570\u5728\u8ba1\u7b97\u65f6\u53ef\u80fd\u4f1a\u51fa\u73b0\u7cbe\u5ea6\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528<code>decimal<\/code>\u6a21\u5757\u6765\u5904\u7406\u6d89\u53ca\u91d1\u94b1\u6216\u5176\u4ed6\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u8ba1\u7b97\u3002\u901a\u8fc7\u5bfc\u5165<code>decimal<\/code>\u6a21\u5757\u5e76\u4f7f\u7528<code>Decimal<\/code>\u7c7b\uff0c\u53ef\u4ee5\u786e\u4fdd\u8ba1\u7b97\u7ed3\u679c\u66f4\u52a0\u51c6\u786e\u3002\u4f8b\u5982\uff0c<code>from decimal import Decimal<\/code>\uff0c\u7136\u540e\u7528<code>Decimal(&#39;0.1&#39;)<\/code>\u6765\u521b\u5efa\u4e00\u4e2a\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u5bf9\u8c61\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5e38\u89c1\u7684\u6d6e\u70b9\u6570\u7cbe\u5ea6\u8bef\u5dee\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\uff0c\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528round()\u51fd\u6570\u3001\u4f7f\u7528Decimal\u6a21\u5757 [&hellip;]","protected":false},"author":3,"featured_media":1071914,"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\/1071907"}],"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=1071907"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1071907\/revisions"}],"predecessor-version":[{"id":1071915,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1071907\/revisions\/1071915"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1071914"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1071907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1071907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1071907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}