{"id":984939,"date":"2024-12-27T07:32:31","date_gmt":"2024-12-26T23:32:31","guid":{"rendered":""},"modified":"2024-12-27T07:32:33","modified_gmt":"2024-12-26T23:32:33","slug":"python-%e5%a6%82%e4%bd%95%e8%a1%a8%e7%a4%ba%e6%95%b4%e6%95%b0%e9%83%a8%e5%88%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/984939.html","title":{"rendered":"python \u5982\u4f55\u8868\u793a\u6574\u6570\u90e8\u5206"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24212324\/85954583-445a-4681-bc13-aca7b3735921.webp\" alt=\"python \u5982\u4f55\u8868\u793a\u6574\u6570\u90e8\u5206\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u8868\u793a\u6574\u6570\u90e8\u5206\u7684\u5e38\u7528\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570<code>int()<\/code>\u3001\u4f7f\u7528\u5730\u677f\u9664\u6cd5<code>\/\/<\/code>\u3001\u4f7f\u7528<code>math<\/code>\u6a21\u5757\u4e2d\u7684<code>floor()<\/code>\u51fd\u6570\u3001\u4ee5\u53ca\u901a\u8fc7\u5b57\u7b26\u4e32\u64cd\u4f5c\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528<code>int()<\/code>\u51fd\u6570\u3002<\/strong> <code>int()<\/code>\u51fd\u6570\u53ef\u4ee5\u5c06\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u6574\u6570\u90e8\u5206\uff0c\u81ea\u52a8\u622a\u53d6\u5c0f\u6570\u70b9\u540e\u7684\u6570\u5b57\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u63cf\u8ff0\uff1a<\/p>\n<\/p>\n<p><p>\u4f7f\u7528<code>int()<\/code>\u51fd\u6570\u662fPython\u4e2d\u6700\u7b80\u5355\u76f4\u63a5\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u4e00\u4e2a\u6570\u7684\u6574\u6570\u90e8\u5206\u3002\u65e0\u8bba\u4f20\u5165\u7684\u662f\u4e00\u4e2a\u6b63\u6570\u8fd8\u662f\u8d1f\u6570\uff0c<code>int()<\/code>\u51fd\u6570\u90fd\u4f1a\u5411\u96f6\u65b9\u5411\u622a\u65ad\u5c0f\u6570\u90e8\u5206\u3002\u4f8b\u5982\uff1a<code>int(3.9)<\/code>\u8fd4\u56de<code>3<\/code>\uff0c<code>int(-3.9)<\/code>\u8fd4\u56de<code>-3<\/code>\u3002\u8fd9\u79cd\u65b9\u5f0f\u9002\u7528\u4e8e\u5927\u591a\u6570\u9700\u8981\u83b7\u53d6\u6574\u6570\u90e8\u5206\u7684\u573a\u666f\uff0c\u7279\u522b\u662f\u5728\u9700\u8981\u7b80\u5355\u76f4\u63a5\u7684\u622a\u65ad\u64cd\u4f5c\u65f6\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8Python\u4e2d\u83b7\u53d6\u6574\u6570\u90e8\u5206\u7684\u5404\u79cd\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u3002<\/p>\n<\/p>\n<h2><strong>\u4e00\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570<code>int()<\/code><\/strong><\/h2>\n<p><p><code>int()<\/code>\u51fd\u6570\u662fPython\u7684\u5185\u7f6e\u51fd\u6570\u4e4b\u4e00\uff0c\u4e3b\u8981\u7528\u4e8e\u5c06\u6570\u5b57\u6216\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u6570\u3002\u5bf9\u4e8e\u6d6e\u70b9\u6570\uff0c<code>int()<\/code>\u51fd\u6570\u4f1a\u622a\u53d6\u5176\u6574\u6570\u90e8\u5206\u3002<\/p>\n<\/p>\n<p><h3>1. <code>int()<\/code>\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n<p><p><code>int()<\/code>\u51fd\u6570\u4e0d\u4ec5\u53ef\u4ee5\u5c06\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u6574\u6570\uff0c\u8fd8\u80fd\u5c06\u5b57\u7b26\u4e32\u8868\u793a\u7684\u6570\u5b57\u8f6c\u6362\u4e3a\u6574\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(int(7.99))   # \u8f93\u51fa: 7<\/p>\n<p>print(int(-7.99))  # \u8f93\u51fa: -7<\/p>\n<p>print(int(&#39;123&#39;))  # \u8f93\u51fa: 123<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u4e14\u9ad8\u6548\uff0c\u9002\u5408\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7684\u6574\u6570\u90e8\u5206\u63d0\u53d6\u3002<\/p>\n<\/p>\n<p><h3>2. \u5904\u7406\u8d1f\u6570\u7684\u60c5\u51b5<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528<code>int()<\/code>\u51fd\u6570\u5904\u7406\u8d1f\u6570\u65f6\uff0c\u7ed3\u679c\u662f\u5411\u96f6\u65b9\u5411\u622a\u65ad\u7684\u5c0f\u6570\u90e8\u5206\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(int(-3.7))  # \u8f93\u51fa: -3<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u610f\u5473\u7740\u5bf9\u4e8e\u8d1f\u6570\uff0c<code>int()<\/code>\u51fd\u6570\u7684\u884c\u4e3a\u7c7b\u4f3c\u4e8e\u5411\u4e0a\u53d6\u6574\u3002<\/p>\n<\/p>\n<h2><strong>\u4e8c\u3001\u4f7f\u7528\u5730\u677f\u9664\u6cd5<code>\/\/<\/code><\/strong><\/h2>\n<p><p>\u5730\u677f\u9664\u6cd5<code>\/\/<\/code>\u662f\u4e00\u79cd\u540c\u65f6\u8fd4\u56de\u5546\u5e76\u820d\u5f03\u5c0f\u6570\u90e8\u5206\u7684\u8fd0\u7b97\u65b9\u5f0f\uff0c\u5b83\u901a\u5e38\u7528\u4e8e\u9700\u8981\u540c\u65f6\u6267\u884c\u9664\u6cd5\u8fd0\u7b97\u5e76\u83b7\u53d6\u6574\u6570\u7ed3\u679c\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h3>1. \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n<p><p>\u5730\u677f\u9664\u6cd5\u64cd\u4f5c\u7b26<code>\/\/<\/code>\u53ef\u4ee5\u76f4\u63a5\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u7684\u5546\u5e76\u622a\u53d6\u6574\u6570\u90e8\u5206\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(7 \/\/ 3)   # \u8f93\u51fa: 2<\/p>\n<p>print(-7 \/\/ 3)  # \u8f93\u51fa: -3<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5730\u677f\u9664\u6cd5\u9002\u5408\u5728\u9700\u8981\u540c\u65f6\u5904\u7406\u9664\u6cd5\u548c\u622a\u65ad\u64cd\u4f5c\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h3>2. \u4e0e<code>int()<\/code>\u7684\u533a\u522b<\/h3>\n<\/p>\n<p><p>\u5730\u677f\u9664\u6cd5\u4e0e<code>int()<\/code>\u51fd\u6570\u7684\u533a\u522b\u5728\u4e8e\u5176\u5904\u7406\u8d1f\u6570\u65f6\u7684\u65b9\u5f0f\uff0c\u5730\u677f\u9664\u6cd5\u603b\u662f\u5411\u8d1f\u65e0\u7a77\u65b9\u5411\u622a\u65ad\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(-7.5 \/\/ 1)  # \u8f93\u51fa: -8<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e0e<code>int()<\/code>\u51fd\u6570\u7684\u5411\u96f6\u65b9\u5411\u622a\u65ad\u662f\u4e0d\u540c\u7684\u3002<\/p>\n<\/p>\n<h2><strong>\u4e09\u3001\u4f7f\u7528<code>math<\/code>\u6a21\u5757\u4e2d\u7684<code>floor()<\/code>\u51fd\u6570<\/strong><\/h2>\n<p><p>Python\u7684<code>math<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86<code>floor()<\/code>\u51fd\u6570\uff0c\u7528\u4e8e\u8fd4\u56de\u5c0f\u4e8e\u6216\u7b49\u4e8e\u7ed9\u5b9a\u6570\u5b57\u7684\u6700\u5927\u6574\u6570\u3002<\/p>\n<\/p>\n<p><h3>1. <code>floor()<\/code>\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n<p><p><code>floor()<\/code>\u51fd\u6570\u9002\u7528\u4e8e\u9700\u8981\u660e\u786e\u5411\u4e0b\u53d6\u6574\u7684\u573a\u666f\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>print(math.floor(7.5))   # \u8f93\u51fa: 7<\/p>\n<p>print(math.floor(-7.5))  # \u8f93\u51fa: -8<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>floor()<\/code>\u51fd\u6570\u53ef\u4ee5\u786e\u4fdd\u7ed3\u679c\u59cb\u7ec8\u662f\u5411\u4e0b\u53d6\u6574\u7684\u6574\u6570\u3002<\/p>\n<\/p>\n<p><h3>2. \u4e0e\u5176\u4ed6\u65b9\u6cd5\u7684\u5bf9\u6bd4<\/h3>\n<\/p>\n<p><p>\u4e0e<code>int()<\/code>\u51fd\u6570\u548c\u5730\u677f\u9664\u6cd5\u76f8\u6bd4\uff0c<code>floor()<\/code>\u51fd\u6570\u59cb\u7ec8\u5411\u4e0b\u53d6\u6574\uff0c\u65e0\u8bba\u6b63\u8d1f\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(math.floor(7.5))   # \u8f93\u51fa: 7<\/p>\n<p>print(math.floor(-7.5))  # \u8f93\u51fa: -8<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u7279\u6027\u4f7f\u5f97<code>floor()<\/code>\u5728\u9700\u8981\u7279\u5b9a\u65b9\u5411\u7684\u820d\u5165\u64cd\u4f5c\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<h2><strong>\u56db\u3001\u901a\u8fc7\u5b57\u7b26\u4e32\u64cd\u4f5c<\/strong><\/h2>\n<p><p>\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u518d\u901a\u8fc7\u5b57\u7b26\u4e32\u64cd\u4f5c\u63d0\u53d6\u6574\u6570\u90e8\u5206\u4e5f\u662f\u4e00\u79cd\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u67d0\u4e9b\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><h3>1. \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u901a\u8fc7\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u4f7f\u7528\u5206\u5272\u64cd\u4f5c\u63d0\u53d6\u6574\u6570\u90e8\u5206\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = 7.99<\/p>\n<p>int_part = str(num).split(&#39;.&#39;)[0]<\/p>\n<p>print(int(int_part))  # \u8f93\u51fa: 7<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u79cd\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u5904\u7406\u6570\u5b57\u3002<\/p>\n<\/p>\n<p><h3>2. \u5904\u7406\u8d1f\u6570\u7684\u60c5\u51b5<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u8d1f\u6570\uff0c\u5b57\u7b26\u4e32\u64cd\u4f5c\u540c\u6837\u6709\u6548\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">num = -7.99<\/p>\n<p>int_part = str(num).split(&#39;.&#39;)[0]<\/p>\n<p>print(int(int_part))  # \u8f93\u51fa: -7<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u7ed3\u5408\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u6280\u672f\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n<h2><strong>\u4e94\u3001\u603b\u7ed3<\/strong><\/h2>\n<p><p>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u83b7\u53d6\u6570\u5b57\u7684\u6574\u6570\u90e8\u5206\u3002<strong><code>int()<\/code>\u51fd\u6570\u662f\u6700\u5e38\u7528\u4e14\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u9002\u5408\u5927\u591a\u6570\u573a\u666f\u3002<\/strong>\u5730\u677f\u9664\u6cd5<code>\/\/<\/code>\u548c<code>math.floor()<\/code>\u51fd\u6570\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u622a\u65ad\u65b9\u5f0f\uff0c\u5206\u522b\u9002\u7528\u4e8e\u5411\u8d1f\u65e0\u7a77\u65b9\u5411\u548c\u5411\u4e0b\u53d6\u6574\u7684\u573a\u666f\u3002\u6b64\u5916\uff0c\u901a\u8fc7\u5b57\u7b26\u4e32\u64cd\u4f5c\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u6574\u6570\u90e8\u5206\u7684\u63d0\u53d6\uff0c\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\u3002\u5728\u9009\u62e9\u4f7f\u7528\u54ea\u79cd\u65b9\u6cd5\u65f6\uff0c\u5e94\u8be5\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u573a\u666f\u8fdb\u884c\u9009\u62e9\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u63d0\u53d6\u4e00\u4e2a\u6d6e\u70b9\u6570\u7684\u6574\u6570\u90e8\u5206\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684<code>int()<\/code>\u51fd\u6570\u6216<code>math.floor()<\/code>\u51fd\u6570\u6765\u63d0\u53d6\u4e00\u4e2a\u6d6e\u70b9\u6570\u7684\u6574\u6570\u90e8\u5206\u3002<code>int()<\/code>\u51fd\u6570\u4f1a\u76f4\u63a5\u5c06\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u6574\u6570\uff0c\u820d\u53bb\u5c0f\u6570\u90e8\u5206\uff1b\u800c<code>math.floor()<\/code>\u5219\u4f1a\u8fd4\u56de\u5c0f\u4e8e\u6216\u7b49\u4e8e\u8be5\u6d6e\u70b9\u6570\u7684\u6700\u5927\u6574\u6570\u3002\u4f7f\u7528\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">import math\n\nnumber = 5.7\ninteger_part1 = int(number)      # \u7ed3\u679c\u4e3a 5\ninteger_part2 = math.floor(number)  # \u7ed3\u679c\u4e5f\u4e3a 5\n<\/code><\/pre>\n<p><strong>Python\u4e2d\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5426\u4e3a\u6574\u6570\uff1f<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528<code>isinstance()<\/code>\u51fd\u6570\u6765\u5224\u65ad\u4e00\u4e2a\u53d8\u91cf\u662f\u5426\u4e3a\u6574\u6570\u7c7b\u578b\u3002\u4f8b\u5982\uff1a  <\/p>\n<pre><code class=\"language-python\">number = 10\nis_integer = isinstance(number, int)  # \u7ed3\u679c\u4e3a True\n<\/code><\/pre>\n<p>\u540c\u65f6\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>float.is_integer()<\/code>\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u6d6e\u70b9\u6570\u662f\u5426\u7b49\u4e8e\u5176\u6574\u6570\u90e8\u5206\u3002\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">number = 10.0\nis_integer = number.is_integer()  # \u7ed3\u679c\u4e3a True\n<\/code><\/pre>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u5bf9\u6574\u6570\u90e8\u5206\u8fdb\u884c\u56db\u820d\u4e94\u5165\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684<code>round()<\/code>\u51fd\u6570\u6765\u5bf9\u6570\u5b57\u8fdb\u884c\u56db\u820d\u4e94\u5165\u3002\u53ef\u4ee5\u4f20\u5165\u4e24\u4e2a\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u662f\u9700\u8981\u56db\u820d\u4e94\u5165\u7684\u6570\u5b57\uff0c\u7b2c\u4e8c\u4e2a\u662f\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u5982\u679c\u53ea\u60f3\u8981\u6574\u6570\u90e8\u5206\uff0c\u53ef\u4ee5\u5c06\u7b2c\u4e8c\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a0\u3002\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">number = 5.6\nrounded_number = round(number)  # \u7ed3\u679c\u4e3a 6\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u53ef\u4ee5\u5904\u7406\u6d6e\u70b9\u6570\uff0c\u8fd8\u80fd\u5904\u7406\u8d1f\u6570\u548c\u5176\u4ed6\u6570\u503c\u7c7b\u578b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u8868\u793a\u6574\u6570\u90e8\u5206\u7684\u5e38\u7528\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570int()\u3001\u4f7f\u7528\u5730\u677f\u9664\u6cd5\/\/\u3001\u4f7f\u7528math\u6a21\u5757\u4e2d\u7684fl [&hellip;]","protected":false},"author":3,"featured_media":984945,"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\/984939"}],"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=984939"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/984939\/revisions"}],"predecessor-version":[{"id":984947,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/984939\/revisions\/984947"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/984945"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=984939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=984939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=984939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}