{"id":1041491,"date":"2024-12-31T12:49:45","date_gmt":"2024-12-31T04:49:45","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1041491.html"},"modified":"2024-12-31T12:49:47","modified_gmt":"2024-12-31T04:49:47","slug":"python%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e5%ad%97%e7%ac%a6%e4%b8%b2%e4%b8%ba%e6%95%b0%e5%ad%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1041491.html","title":{"rendered":"python\u5982\u4f55\u5224\u65ad\u5b57\u7b26\u4e32\u4e3a\u6570\u5b57"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/12\/a3e4d25e-23b1-4696-8e0e-71af5a5291ba.webp?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"python\u5982\u4f55\u5224\u65ad\u5b57\u7b26\u4e32\u4e3a\u6570\u5b57\" \/><\/p>\n<p><p> <strong>Python\u5224\u65ad\u5b57\u7b26\u4e32\u4e3a\u6570\u5b57\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528str.isdigit()\u65b9\u6cd5\u3001\u4f7f\u7528str.isnumeric()\u65b9\u6cd5\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/strong> \u5176\u4e2d\uff0c\u6700\u5e38\u7528\u4e14\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528str.isdigit()\u65b9\u6cd5\u3002\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u5b8c\u5168\u7531\u6570\u5b57\u7ec4\u6210\u3002<\/p>\n<\/p>\n<p><p><strong>\u8be6\u7ec6\u63cf\u8ff0<\/strong>\uff1a<strong>\u4f7f\u7528str.isdigit()\u65b9\u6cd5<\/strong>\u3002\u8fd9\u4e2a\u65b9\u6cd5\u662f\u5b57\u7b26\u4e32\u5185\u7f6e\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u68c0\u67e5\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u662f\u5426\u90fd\u662f\u6570\u5b57\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cisdigit()\u65b9\u6cd5\u53ea\u5bf9\u5341\u8fdb\u5236\u6570\u5b57\u6709\u6548\uff0c\u5bf9\u4e8e\u5305\u542b\u5c0f\u6570\u70b9\u3001\u8d1f\u53f7\u6216\u5176\u4ed6\u975e\u6570\u5b57\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0cisdigit()\u65b9\u6cd5\u4f1a\u8fd4\u56deFalse\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u7684\u9700\u6c42\u662f\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6574\u6570\uff0c\u90a3\u4e48isdigit()\u65b9\u6cd5\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\u3002<\/p>\n<\/p>\n<p><p>\u8ba9\u6211\u4eec\u8fdb\u4e00\u6b65\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u5b66\u4e60\u5982\u4f55\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u5e94\u7528\u5b83\u4eec\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528str.isdigit()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p><strong>str.isdigit()\u65b9\u6cd5<\/strong>\u662f\u6700\u7b80\u5355\u3001\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u4e4b\u4e00\uff0c\u7528\u4e8e\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u6570\u5b57\u5b57\u7b26\u3002\u5b83\u9002\u7528\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6574\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>test_str = &quot;12345&quot;<\/p>\n<p>if test_str.isdigit():<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c<code>test_str<\/code>\u5168\u662f\u6570\u5b57\uff0c<code>isdigit()<\/code>\u65b9\u6cd5\u4f1a\u8fd4\u56deTrue\uff0c\u5426\u5219\u8fd4\u56deFalse\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u4e0d\u9002\u7528\u4e8e\u5c0f\u6570\u548c\u8d1f\u6570\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528str.isnumeric()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p><strong>str.isnumeric()\u65b9\u6cd5<\/strong>\u7c7b\u4f3c\u4e8eisdigit()\uff0c\u4f46\u5b83\u7684\u5e94\u7528\u8303\u56f4\u66f4\u5e7f\u3002\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u5224\u65ad\u963f\u62c9\u4f2f\u6570\u5b57\uff0c\u8fd8\u53ef\u4ee5\u5224\u65ad\u5176\u4ed6\u5f62\u5f0f\u7684\u6570\u5b57\uff0c\u6bd4\u5982\u7f57\u9a6c\u6570\u5b57\u548c\u4e2d\u6587\u6570\u5b57\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>test_str = &quot;12345&quot;<\/p>\n<p>if test_str.isnumeric():<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5c3d\u7ba1isnumeric()\u65b9\u6cd5\u6bd4isdigit()\u65b9\u6cd5\u66f4\u5f3a\u5927\uff0c\u4f46\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0cisdigit()\u65b9\u6cd5\u5df2\u7ecf\u8db3\u591f\u4f7f\u7528\u4e86\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f<\/h3>\n<\/p>\n<p><p><strong>\u6b63\u5219\u8868\u8fbe\u5f0f<\/strong>\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5b57\u7b26\u4e32\u5339\u914d\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u6765\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u7b26\u5408\u7279\u5b9a\u7684\u6a21\u5f0f\u3002\u5bf9\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u4e5f\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<h2><strong>\u793a\u4f8b\u4ee3\u7801<\/strong><\/h2>\n<p>test_str = &quot;12345.67&quot;<\/p>\n<p>pattern = re.compile(r&#39;^\\d+(\\.\\d+)?$&#39;)<\/p>\n<p>if pattern.match(test_str):<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e0a\u9762\u7684\u4ee3\u7801\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u5339\u914d\u6574\u6570\u548c\u5c0f\u6570\u3002<code>^\\d+(\\.\\d+)?$<\/code>\u8868\u793a\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\uff0c\u540e\u9762\u53ef\u4ee5\u8ddf\u4e00\u4e2a\u5c0f\u6570\u70b9\u548c\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u4f7f\u7528try-except\u5757<\/h3>\n<\/p>\n<p><p><strong>try-except\u5757<\/strong>\u662f\u4e00\u79cd\u5f02\u5e38\u5904\u7406\u673a\u5236\uff0c\u53ef\u4ee5\u7528\u6765\u5c1d\u8bd5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\uff0c\u5982\u679c\u8f6c\u6362\u5931\u8d25\u5219\u6355\u83b7\u5f02\u5e38\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6574\u6570\u6216\u5c0f\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>test_str = &quot;12345.67&quot;<\/p>\n<p>try:<\/p>\n<p>    float(test_str)<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p>except ValueError:<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c1d\u8bd5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\uff0c\u5982\u679c\u8f6c\u6362\u6210\u529f\uff0c\u8bf4\u660e\u5b57\u7b26\u4e32\u662f\u4e00\u4e2a\u6570\u5b57\uff1b\u5426\u5219\uff0c\u6355\u83b7ValueError\u5f02\u5e38\uff0c\u8bf4\u660e\u5b57\u7b26\u4e32\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u4f7f\u7528\u81ea\u5b9a\u4e49\u51fd\u6570<\/h3>\n<\/p>\n<p><p>\u6709\u65f6\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u4e00\u4e2a\u66f4\u901a\u7528\u3001\u66f4\u7075\u6d3b\u7684\u51fd\u6570\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002\u6211\u4eec\u53ef\u4ee5\u7ed3\u5408\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u7f16\u5199\u4e00\u4e2a\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>def is_number(s):<\/p>\n<p>    try:<\/p>\n<p>        float(s)<\/p>\n<p>        return True<\/p>\n<p>    except ValueError:<\/p>\n<p>        return False<\/p>\n<p>test_str = &quot;12345.67&quot;<\/p>\n<p>if is_number(test_str):<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e2a\u81ea\u5b9a\u4e49\u51fd\u6570\u53ef\u4ee5\u5224\u65ad\u6574\u6570\u548c\u5c0f\u6570\uff0c\u5e76\u4e14\u4f7f\u7528\u4e86\u5f02\u5e38\u5904\u7406\u673a\u5236\u6765\u786e\u4fdd\u4ee3\u7801\u7684\u5065\u58ee\u6027\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u7efc\u5408\u8fd0\u7528\u4e0a\u8ff0\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002\u6709\u65f6\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u7efc\u5408\u8fd0\u7528\u591a\u79cd\u65b9\u6cd5\uff0c\u4ee5\u786e\u4fdd\u4ee3\u7801\u7684\u51c6\u786e\u6027\u548c\u5065\u58ee\u6027\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u793a\u4f8b\u4ee3\u7801<\/p>\n<p>def is_number(s):<\/p>\n<p>    if s.isdigit():<\/p>\n<p>        return True<\/p>\n<p>    try:<\/p>\n<p>        float(s)<\/p>\n<p>        return True<\/p>\n<p>    except ValueError:<\/p>\n<p>        return False<\/p>\n<p>test_str = &quot;12345.67&quot;<\/p>\n<p>if is_number(test_str):<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(f&quot;&#39;{test_str}&#39;\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528isdigit()\u65b9\u6cd5\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6574\u6570\uff0c\u5982\u679c\u4e0d\u662f\uff0c\u518d\u5c1d\u8bd5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u786e\u4fdd\u6211\u4eec\u51c6\u786e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002<\/p>\n<\/p>\n<p><h3>\u4e03\u3001\u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n<p><p>\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u5728\u5f88\u591a\u5e94\u7528\u573a\u666f\u4e2d\u90fd\u975e\u5e38\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u5728\u7528\u6237\u8f93\u5165\u6570\u636e\u65f6\uff0c\u6211\u4eec\u9700\u8981\u9a8c\u8bc1\u8f93\u5165\u662f\u5426\u5408\u6cd5\uff0c\u786e\u4fdd\u8f93\u5165\u7684\u662f\u6570\u5b57\uff1b\u5728\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u65f6\uff0c\u6211\u4eec\u9700\u8981\u5224\u65ad\u6570\u636e\u7c7b\u578b\uff0c\u4ee5\u4fbf\u8fdb\u884c\u76f8\u5e94\u7684\u5904\u7406\uff1b\u5728\u7f51\u7edc\u722c\u866b\u548c\u6570\u636e\u6293\u53d6\u65f6\uff0c\u6211\u4eec\u9700\u8981\u89e3\u6790\u7f51\u9875\u5185\u5bb9\uff0c\u63d0\u53d6\u6570\u5b57\u4fe1\u606f\u3002<\/p>\n<\/p>\n<p><h3>\u516b\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Python\u4e2d\u8f7b\u677e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002<strong>str.isdigit()\u65b9\u6cd5<\/strong>\u548c<strong>str.isnumeric()\u65b9\u6cd5<\/strong>\u662f\u6700\u5e38\u7528\u7684\u65b9\u5f0f\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u60c5\u51b5\uff1b<strong>\u6b63\u5219\u8868\u8fbe\u5f0f<\/strong>\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\uff1b<strong>try-except\u5757<\/strong>\u548c<strong>\u81ea\u5b9a\u4e49\u51fd\u6570<\/strong>\u5219\u63d0\u4f9b\u4e86\u66f4\u52a0\u901a\u7528\u548c\u5065\u58ee\u7684\u89e3\u51b3\u65b9\u6848\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u786e\u4fdd\u6211\u4eec\u7684\u4ee3\u7801\u66f4\u52a0\u51c6\u786e\u3001\u9ad8\u6548\u548c\u5065\u58ee\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u5bf9\u8fd9\u4e9b\u65b9\u6cd5\u7684\u6df1\u5165\u7406\u89e3\u548c\u5b9e\u8df5\u5e94\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u6280\u5de7\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u8d28\u91cf\u548c\u53ef\u9760\u6027\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u5728Python\u7f16\u7a0b\u4e2d\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\uff1f<\/strong><\/p>\n<p>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u5185\u7f6e\u7684<code>str.isdigit()<\/code>\u65b9\u6cd5\uff0c\u6216\u8005\u5c1d\u8bd5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\u7c7b\u578b\uff08\u5982<code>int<\/code>\u6216<code>float<\/code>\uff09\uff0c\u5e76\u5904\u7406\u53ef\u80fd\u51fa\u73b0\u7684\u5f02\u5e38\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\n<p>\u4f7f\u7528<code>str.isdigit()<\/code>\u65b9\u6cd5\uff1a<\/p>\n<pre><code class=\"language-python\">my_string = &quot;12345&quot;\nif my_string.isdigit():\n    print(&quot;\u662f\u6570\u5b57&quot;)\nelse:\n    print(&quot;\u4e0d\u662f\u6570\u5b57&quot;)\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u53ea\u9002\u7528\u4e8e\u6b63\u6574\u6570\uff0c\u4e0d\u80fd\u8bc6\u522b\u8d1f\u6570\u6216\u5c0f\u6570\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528<code>try...except<\/code>\u7ed3\u6784\uff1a<\/p>\n<pre><code class=\"language-python\">my_string = &quot;123.45&quot;\ntry:\n    float(my_string)\n    print(&quot;\u662f\u6570\u5b57&quot;)\nexcept ValueError:\n    print(&quot;\u4e0d\u662f\u6570\u5b57&quot;)\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5224\u65ad\u5305\u62ec\u8d1f\u6570\u548c\u5c0f\u6570\u5728\u5185\u7684\u5404\u79cd\u6570\u5b57\u683c\u5f0f\u3002<\/p>\n<\/li>\n<\/ol>\n<p><strong>\u5728Python\u4e2d\uff0c\u5982\u4f55\u5224\u65ad\u5305\u542b\u7b26\u53f7\u7684\u6570\u5b57\u5b57\u7b26\u4e32\uff1f<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5305\u542b\u8d1f\u53f7\u6216\u6b63\u53f7\u7684\u6570\u5b57\u5b57\u7b26\u4e32\uff0c\u4f7f\u7528<code>try...except<\/code>\u7ed3\u6784\u662f\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002\u6bd4\u5982\uff0c&quot;-123&quot;\u548c&quot;+456&quot;\u90fd\u53ef\u4ee5\u88ab\u6210\u529f\u8f6c\u6362\u4e3a\u6570\u5b57\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-python\">my_string = &quot;-123.45&quot;\ntry:\n    float(my_string)\n    print(&quot;\u662f\u6570\u5b57&quot;)\nexcept ValueError:\n    print(&quot;\u4e0d\u662f\u6570\u5b57&quot;)\n<\/code><\/pre>\n<p><strong>\u5982\u4f55\u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u7684\u6570\u5b57\u90e8\u5206\uff1f<\/strong><\/p>\n<p>\u5982\u679c\u5b57\u7b26\u4e32\u4e2d\u53ef\u80fd\u5305\u542b\u5176\u4ed6\u5b57\u7b26\uff0c\u5e76\u4e14\u5e0c\u671b\u63d0\u53d6\u51fa\u5176\u4e2d\u7684\u6570\u5b57\u90e8\u5206\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-python\">import re\n\nmy_string = &quot;abc123def&quot;\nnumbers = re.findall(r&#39;\\d+&#39;, my_string)\nif numbers:\n    print(&quot;\u5b57\u7b26\u4e32\u4e2d\u5305\u542b\u6570\u5b57:&quot;, numbers)\nelse:\n    print(&quot;\u5b57\u7b26\u4e32\u4e2d\u4e0d\u5305\u542b\u6570\u5b57&quot;)\n<\/code><\/pre>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u7528\u6237\u53ef\u4ee5\u7075\u6d3b\u5730\u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u6570\u5b57\u4ee5\u53ca\u5904\u7406\u4e0d\u540c\u683c\u5f0f\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u5224\u65ad\u5b57\u7b26\u4e32\u4e3a\u6570\u5b57\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528str.isdigit()\u65b9\u6cd5\u3001\u4f7f\u7528str.isnumeric [&hellip;]","protected":false},"author":3,"featured_media":1041501,"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\/1041491"}],"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=1041491"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1041491\/revisions"}],"predecessor-version":[{"id":1041504,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1041491\/revisions\/1041504"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1041501"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1041491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1041491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1041491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}