{"id":934017,"date":"2024-12-26T18:27:14","date_gmt":"2024-12-26T10:27:14","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/934017.html"},"modified":"2024-12-26T18:27:16","modified_gmt":"2024-12-26T10:27:16","slug":"python-%e5%a6%82%e4%bd%95%e6%8e%a7%e5%88%b6%e4%bd%8d%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/934017.html","title":{"rendered":"python \u5982\u4f55\u63a7\u5236\u4f4d\u6570"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25071158\/0120c62e-7520-41cc-94c6-184fcc9ef225.webp\" alt=\"python \u5982\u4f55\u63a7\u5236\u4f4d\u6570\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u63a7\u5236\u6570\u5b57\u7684\u4f4d\u6570\u4e3b\u8981\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u820d\u5165\u51fd\u6570\u3001\u6570\u5b66\u8fd0\u7b97\u7b49\u65b9\u6cd5\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\uff08\u5982f-strings\u548cformat\u65b9\u6cd5\uff09\u3001round\u51fd\u6570\u6765\u820d\u5165\u6570\u5b57\uff0c\u4ee5\u53ca\u901a\u8fc7\u6570\u5b66\u8fd0\u7b97\u5904\u7406\u5c0f\u6570\u4f4d\u6570\u3002\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u7075\u6d3b\u6027\u9ad8\u3001\u64cd\u4f5c\u7b80\u5355\uff0c\u4f7f\u5176\u6210\u4e3a\u63a7\u5236\u6570\u5b57\u4f4d\u6570\u7684\u9996\u9009\u65b9\u6cd5\u3002<\/strong>\u4e0b\u9762\u5c06\u8be6\u7ec6\u63cf\u8ff0\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u6765\u63a7\u5236\u6570\u5b57\u7684\u4f4d\u6570\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/p>\n<\/p>\n<p><p>\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u662f\u63a7\u5236\u6570\u5b57\u4f4d\u6570\u7684\u5e38\u7528\u65b9\u6cd5\u4e4b\u4e00\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u8fdb\u884c\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\uff0c\u5305\u62ec\u767e\u5206\u53f7\u683c\u5f0f\u5316\u3001str.format()\u65b9\u6cd5\u548cf-string\u683c\u5f0f\u5316\u3002\u8fd9\u91cc\u4e3b\u8981\u4ecb\u7ecdstr.format()\u548cf-string\u683c\u5f0f\u5316\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528str.format()\u65b9\u6cd5<\/li>\n<\/ol>\n<p><p>\u901a\u8fc7str.format()\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u4f7f\u7528\u65f6\uff0c\u53ea\u9700\u5728\u82b1\u62ec\u53f7\u4e2d\u6307\u5b9a\u683c\u5f0f\u8bf4\u660e\u7b26\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u60f3\u8981\u5c06\u4e00\u4e2a\u6d6e\u70b9\u6570\u683c\u5f0f\u5316\u4e3a\u4e24\u4f4d\u5c0f\u6570\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">number = 3.14159<\/p>\n<p>formatted_number = &quot;{:.2f}&quot;.format(number)<\/p>\n<p>print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u91cc\uff0c<code>{:.2f}<\/code>\u8868\u793a\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li>\u4f7f\u7528f-string\u683c\u5f0f\u5316<\/li>\n<\/ol>\n<p><p>f-string\u662f\u4e00\u79cd\u66f4\u52a0\u7b80\u6d01\u7684\u683c\u5f0f\u5316\u65b9\u5f0f\uff0c\u4ecePython 3.6\u5f00\u59cb\u5f15\u5165\u3002\u4f7f\u7528f-string\uff0c\u540c\u6837\u53ef\u4ee5\u63a7\u5236\u6570\u5b57\u7684\u5c0f\u6570\u4f4d\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">number = 3.14159<\/p>\n<p>formatted_number = f&quot;{number:.2f}&quot;<\/p>\n<p>print(formatted_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>f-string\u4e2d\u7684<code>{number:.2f}<\/code>\u4e0estr.format()\u65b9\u6cd5\u4e2d\u7684\u683c\u5f0f\u8bf4\u660e\u7b26\u76f8\u540c\uff0c\u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u820d\u5165\u51fd\u6570<\/p>\n<\/p>\n<p><p>\u9664\u4e86\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u5916\uff0cPython\u8fd8\u63d0\u4f9b\u4e86\u5185\u7f6e\u7684\u820d\u5165\u51fd\u6570round()\uff0c\u7528\u4e8e\u5c06\u6570\u5b57\u820d\u5165\u5230\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528round()\u51fd\u6570<\/li>\n<\/ol>\n<p><p>round()\u51fd\u6570\u7684\u7528\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u4f20\u5165\u8981\u820d\u5165\u7684\u6570\u5b57\u548c\u5e0c\u671b\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u5373\u53ef\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">number = 3.14159<\/p>\n<p>rounded_number = round(number, 2)<\/p>\n<p>print(rounded_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>round()\u51fd\u6570\u4f1a\u6839\u636e\u56db\u820d\u4e94\u5165\u7684\u89c4\u5219\u8fdb\u884c\u820d\u5165\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u6570\u5b66\u8fd0\u7b97<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u6570\u5b66\u8fd0\u7b97\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u6570\u5b57\u4f4d\u6570\u7684\u63a7\u5236\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5c06\u6570\u5b57\u622a\u65ad\u5230\u6307\u5b9a\u5c0f\u6570\u4f4d\u6570\u65f6\u3002<\/p>\n<\/p>\n<ol>\n<li>\u4f7f\u7528\u6570\u5b66\u8fd0\u7b97\u622a\u65ad\u5c0f\u6570<\/li>\n<\/ol>\n<p><p>\u53ef\u4ee5\u901a\u8fc7\u4e58\u9664\u64cd\u4f5c\u6765\u622a\u65ad\u6570\u5b57\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u4f8b\u5982\uff0c\u4e3a\u4e86\u622a\u65ad\u5230\u4e24\u4f4d\u5c0f\u6570\uff0c\u53ef\u4ee5\u5c06\u6570\u5b57\u4e58\u4ee5100\uff0c\u53d6\u6574\u540e\u518d\u9664\u4ee5100\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>number = 3.14159<\/p>\n<p>truncated_number = math.floor(number * 100) \/ 100<\/p>\n<p>print(truncated_number)  # \u8f93\u51fa\uff1a3.14<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4f1a\u8fdb\u884c\u56db\u820d\u4e94\u5165\uff0c\u800c\u662f\u76f4\u63a5\u622a\u65ad\u591a\u4f59\u7684\u5c0f\u6570\u4f4d\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u5b9e\u9645\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u63a7\u5236\u6570\u5b57\u4f4d\u6570\u7684\u9700\u6c42\u5e7f\u6cdb\u5b58\u5728\u4e8e\u91d1\u878d\u3001\u79d1\u5b66\u8ba1\u7b97\u3001\u7edf\u8ba1\u5206\u6790\u7b49\u9886\u57df\u3002\u5728\u91d1\u878d\u8ba1\u7b97\u4e2d\uff0c\u901a\u5e38\u9700\u8981\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u4ee5\u8868\u793a\u8d27\u5e01\u3002\u5728\u79d1\u5b66\u8ba1\u7b97\u4e2d\uff0c\u9700\u8981\u6839\u636e\u7cbe\u5ea6\u8981\u6c42\u8c03\u6574\u6570\u5b57\u7684\u5c0f\u6570\u4f4d\u6570\u3002<\/p>\n<\/p>\n<ol>\n<li>\u91d1\u878d\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528<\/li>\n<\/ol>\n<p><p>\u5728\u91d1\u878d\u8ba1\u7b97\u4e2d\uff0c\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9700\u6c42\u3002\u4f8b\u5982\uff0c\u5728\u8ba1\u7b97\u5229\u606f\u3001\u6298\u6263\u548c\u7a0e\u8d39\u65f6\uff0c\u5f80\u5f80\u9700\u8981\u7cbe\u786e\u5230\u5c0f\u6570\u70b9\u540e\u4e24\u4f4d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">principal = 1000.0<\/p>\n<p>rate = 0.05<\/p>\n<p>interest = principal * rate<\/p>\n<p>formatted_interest = f&quot;{interest:.2f}&quot;<\/p>\n<p>print(f&quot;Interest: ${formatted_interest}&quot;)  # \u8f93\u51fa\uff1aInterest: $50.00<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li>\u79d1\u5b66\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528<\/li>\n<\/ol>\n<p><p>\u5728\u79d1\u5b66\u8ba1\u7b97\u4e2d\uff0c\u7cbe\u5ea6\u8981\u6c42\u53ef\u80fd\u4f1a\u66f4\u9ad8\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u8ba1\u7b97\u4efb\u52a1\u8c03\u6574\u5c0f\u6570\u4f4d\u6570\u3002\u4f8b\u5982\uff0c\u5728\u8ba1\u7b97\u7269\u7406\u5e38\u6570\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u4fdd\u7559\u66f4\u591a\u7684\u5c0f\u6570\u4f4d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">gravity_constant = 6.67430e-11<\/p>\n<p>formatted_gravity = f&quot;{gravity_constant:.5e}&quot;<\/p>\n<p>print(f&quot;Gravitational Constant: {formatted_gravity}&quot;)  # \u8f93\u51fa\uff1aGravitational Constant: 6.67430e-11<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e94\u3001\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\u63a7\u5236\u6570\u5b57\u4f4d\u6570\u7684\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0c\u5176\u4e2d\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u548c\u820d\u5165\u51fd\u6570\u662f\u6700\u5e38\u7528\u7684\u4e24\u79cd\u65b9\u5f0f\u3002\u901a\u8fc7\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u4e2d\u6ee1\u8db3\u5bf9\u6570\u5b57\u4f4d\u6570\u7684\u5404\u79cd\u8981\u6c42\u3002\u65e0\u8bba\u662f\u91d1\u878d\u8ba1\u7b97\u8fd8\u662f\u79d1\u5b66\u8ba1\u7b97\uff0c\u7075\u6d3b\u5730\u63a7\u5236\u6570\u5b57\u4f4d\u6570\u90fd\u662f\u5b9e\u73b0\u7cbe\u786e\u8ba1\u7b97\u7684\u5173\u952e\u3002\u638c\u63e1\u8fd9\u4e9b\u6280\u80fd\uff0c\u5c06\u6709\u52a9\u4e8e\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u51c6\u786e\u6027\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\u63a7\u5236\u5c0f\u6570\u4f4d\u6570\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6765\u63a7\u5236\u6570\u5b57\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u53ef\u4ee5\u4f7f\u7528<code>f-string<\/code>\u3001<code>format()<\/code>\u65b9\u6cd5\u6216<code>round()<\/code>\u51fd\u6570\u3002\u4f8b\u5982\uff1a  <\/p>\n<ul>\n<li>\u4f7f\u7528<code>f-string<\/code>\uff1a<code>formatted_number = f&quot;{number:.2f}&quot;<\/code> \u8fd9\u6837\u53ef\u4ee5\u5c06\u6570\u5b57\u683c\u5f0f\u5316\u4e3a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002  <\/li>\n<li>\u4f7f\u7528<code>format()<\/code>\uff1a<code>formatted_number = &quot;{:.2f}&quot;.format(number)<\/code> \u4e5f\u53ef\u4ee5\u8fbe\u5230\u76f8\u540c\u7684\u6548\u679c\u3002  <\/li>\n<li>\u4f7f\u7528<code>round()<\/code>\u51fd\u6570\uff1a<code>rounded_number = round(number, 2)<\/code> \u8fd9\u4e2a\u51fd\u6570\u4f1a\u8fd4\u56de\u56db\u820d\u4e94\u5165\u540e\u7684\u6570\u5b57\u3002<\/li>\n<\/ul>\n<p><strong>\u5982\u4f55\u63a7\u5236\u6574\u6570\u7684\u4f4d\u6570\u5e76\u5728\u524d\u9762\u8865\u96f6\uff1f<\/strong><br \/>\u82e5\u60f3\u5728\u6574\u6570\u524d\u9762\u8865\u96f6\u4ee5\u786e\u4fdd\u5176\u4f4d\u6570\u4e00\u81f4\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6216<code>zfill()<\/code>\u65b9\u6cd5\u3002  <\/p>\n<ul>\n<li><code>f-string<\/code>\u793a\u4f8b\uff1a<code>formatted_number = f&quot;{number:05}&quot;<\/code> \u8fd9\u5c06\u786e\u4fdd\u6570\u5b57\u603b\u662f\u5360\u75285\u4f4d\uff0c\u4e0d\u8db3\u7684\u90e8\u5206\u7528\u96f6\u586b\u5145\u3002  <\/li>\n<li><code>zfill()<\/code>\u65b9\u6cd5\u793a\u4f8b\uff1a<code>formatted_number = str(number).zfill(5)<\/code> \u4e5f\u53ef\u4ee5\u5b9e\u73b0\u76f8\u540c\u6548\u679c\u3002<\/li>\n<\/ul>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u5904\u7406\u79d1\u5b66\u8ba1\u6570\u6cd5\u7684\u4f4d\u6570\u95ee\u9898\uff1f<\/strong><br \/>\u5f53\u5904\u7406\u975e\u5e38\u5927\u7684\u6570\u5b57\u65f6\uff0cPython\u53ef\u80fd\u4f1a\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u663e\u793a\u3002\u4e3a\u4e86\u63a7\u5236\u8fd9\u79cd\u663e\u793a\u65b9\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3002<br \/>\u4f8b\u5982\uff0c\u4f7f\u7528<code>format()<\/code>\u65b9\u6cd5\uff1a<code>formatted_number = &quot;{:.2e}&quot;.format(number)<\/code> \u8fd9\u5c06\u4ee5\u79d1\u5b66\u8ba1\u6570\u6cd5\u663e\u793a\u6570\u5b57\uff0c\u5e76\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002\u82e5\u60f3\u4ee5\u666e\u901a\u5f62\u5f0f\u663e\u793a\uff0c\u53ef\u4ee5\u4f7f\u7528<code>&quot;{:.2f}&quot;.format(number)<\/code>\u6765\u907f\u514d\u79d1\u5b66\u8ba1\u6570\u6cd5\u7684\u51fa\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u63a7\u5236\u6570\u5b57\u7684\u4f4d\u6570\u4e3b\u8981\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u820d\u5165\u51fd\u6570\u3001\u6570\u5b66\u8fd0\u7b97\u7b49\u65b9\u6cd5\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u5b57\u7b26\u4e32 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