{"id":965751,"date":"2024-12-27T04:40:56","date_gmt":"2024-12-26T20:40:56","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/965751.html"},"modified":"2024-12-27T04:40:58","modified_gmt":"2024-12-26T20:40:58","slug":"python%e5%a6%82%e4%bd%95%e5%af%bc%e5%85%a5re%e6%a8%a1%e5%9d%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/965751.html","title":{"rendered":"python\u5982\u4f55\u5bfc\u5165re\u6a21\u5757"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24181858\/1e86ca0b-d14c-461f-97ac-3f56d004e6a7.webp\" alt=\"python\u5982\u4f55\u5bfc\u5165re\u6a21\u5757\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u5bfc\u5165re\u6a21\u5757\u7684\u65b9\u6cd5\u662f\u4f7f\u7528import\u8bed\u53e5\uff0c\u901a\u8fc7\u8be5\u8bed\u53e5\u53ef\u4ee5\u5c06re\u6a21\u5757\u5f15\u5165\u5230\u4f60\u7684Python\u811a\u672c\u4e2d\uff0c\u4ece\u800c\u4f7f\u7528\u5176\u63d0\u4f9b\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u529f\u80fd\u3002\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1aimport re\u3001\u5728\u811a\u672c\u4e2d\u4f7f\u7528re\u6a21\u5757\u63d0\u4f9b\u7684\u51fd\u6570\u6765\u8fdb\u884c\u6b63\u5219\u8868\u8fbe\u5f0f\u64cd\u4f5c\u3002<\/strong><\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u7528\u4e8e\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u6a21\u5f0f\u3002re\u6a21\u5757\u662fPython\u4e2d\u7528\u4e8e\u5904\u7406\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6807\u51c6\u5e93\u6a21\u5757\uff0c\u56e0\u6b64\u5728\u8fdb\u884c\u4efb\u4f55\u6b63\u5219\u8868\u8fbe\u5f0f\u64cd\u4f5c\u4e4b\u524d\uff0c\u5fc5\u987b\u5148\u5bfc\u5165re\u6a21\u5757\u3002\u5bfc\u5165re\u6a21\u5757\u7684\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u5728Python\u811a\u672c\u7684\u5f00\u5934\u4f7f\u7528import\u8bed\u53e5\u5373\u53ef\uff0c\u4f8b\u5982\uff1a<code>import re<\/code>\u3002\u4e00\u65e6\u5bfc\u5165\u4e86re\u6a21\u5757\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u5176\u63d0\u4f9b\u7684\u591a\u79cd\u529f\u80fd\u6765\u5904\u7406\u5b57\u7b26\u4e32\u5339\u914d\u3001\u67e5\u627e\u548c\u66ff\u6362\u64cd\u4f5c\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528re\u6a21\u5757\u7684\u4e00\u4e9b\u57fa\u672c\u529f\u80fd\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u793a\u4f8b\u4ee3\u7801\u6765\u6f14\u793a\u5176\u5e94\u7528\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001RE\u6a21\u5757\u7684\u57fa\u672c\u529f\u80fd<\/p>\n<\/p>\n<p><p>\u5728\u5bfc\u5165re\u6a21\u5757\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5176\u63d0\u4f9b\u7684\u591a\u79cd\u529f\u80fd\u6765\u8fdb\u884c\u6b63\u5219\u8868\u8fbe\u5f0f\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662fre\u6a21\u5757\u4e2d\u4e00\u4e9b\u5e38\u7528\u7684\u51fd\u6570\u53ca\u5176\u7528\u9014\uff1a<\/p>\n<\/p>\n<ol>\n<li><code>re.match()<\/code><\/li>\n<\/ol>\n<p><p><code>re.match()<\/code>\u51fd\u6570\u7528\u4e8e\u4ece\u5b57\u7b26\u4e32\u7684\u8d77\u59cb\u4f4d\u7f6e\u5f00\u59cb\u5339\u914d\u3002\u5982\u679c\u5339\u914d\u6210\u529f\uff0c\u5219\u8fd4\u56de\u4e00\u4e2aMatch\u5bf9\u8c61\uff0c\u5426\u5219\u8fd4\u56deNone\u3002\u8fd9\u610f\u5473\u7740<code>re.match()<\/code>\u53ea\u68c0\u67e5\u5b57\u7b26\u4e32\u7684\u5f00\u5934\u90e8\u5206\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;hello&quot;<\/p>\n<p>string = &quot;hello world&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><code>re.search()<\/code><\/li>\n<\/ol>\n<p><p>\u4e0e<code>re.match()<\/code>\u4e0d\u540c\uff0c<code>re.search()<\/code>\u4f1a\u626b\u63cf\u6574\u4e2a\u5b57\u7b26\u4e32\u5e76\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5bf9\u8c61\u3002\u5373\u4f7f\u6a21\u5f0f\u4e0d\u662f\u5728\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u4f4d\u7f6e\uff0c<code>re.search()<\/code>\u4e5f\u4f1a\u627e\u5230\u7b2c\u4e00\u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u5339\u914d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;world&quot;<\/p>\n<p>string = &quot;hello world&quot;<\/p>\n<p>search = re.search(pattern, string)<\/p>\n<p>if search:<\/p>\n<p>    print(&quot;Match found:&quot;, search.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><code>re.findall()<\/code><\/li>\n<\/ol>\n<p><p><code>re.findall()<\/code>\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5217\u8868\uff0c\u5305\u542b\u6240\u6709\u4e0e\u6a21\u5f0f\u5339\u914d\u7684\u90e8\u5206\u3002\u5373\u4f7f\u6ca1\u6709\u5339\u914d\uff0c\u8fd4\u56de\u7684\u4e5f\u662f\u4e00\u4e2a\u7a7a\u5217\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;\\d+&quot;<\/p>\n<p>string = &quot;There are 2 apples and 5 oranges.&quot;<\/p>\n<p>matches = re.findall(pattern, string)<\/p>\n<p>print(&quot;Matches found:&quot;, matches)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"4\">\n<li><code>re.sub()<\/code><\/li>\n<\/ol>\n<p><p><code>re.sub()<\/code>\u7528\u4e8e\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5339\u914d\u9879\u3002\u5b83\u63a5\u6536\u4e09\u4e2a\u53c2\u6570\uff1a\u6a21\u5f0f\u3001\u66ff\u6362\u7684\u5b57\u7b26\u4e32\u548c\u8981\u5904\u7406\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;apples&quot;<\/p>\n<p>replacement = &quot;bananas&quot;<\/p>\n<p>string = &quot;There are 2 apples and 5 oranges.&quot;<\/p>\n<p>new_string = re.sub(pattern, replacement, string)<\/p>\n<p>print(&quot;New string:&quot;, new_string)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e8c\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5<\/p>\n<\/p>\n<p><p>\u5728\u4f7f\u7528re\u6a21\u5757\u65f6\uff0c\u7406\u89e3\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u7b26\u53f7\uff1a<\/p>\n<\/p>\n<ol>\n<li><strong>\u70b9\u53f7\uff08.\uff09<\/strong><\/li>\n<\/ol>\n<p><p>\u70b9\u53f7\u5339\u914d\u9664\u4e86\u6362\u884c\u7b26\u4ee5\u5916\u7684\u4efb\u4f55\u5b57\u7b26\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;h.llo&quot;<\/p>\n<p>string = &quot;hello&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u661f\u53f7\uff08*\uff09<\/strong><\/li>\n<\/ol>\n<p><p>\u661f\u53f7\u5339\u914d\u524d\u9762\u7684\u5b57\u7b260\u6b21\u6216\u591a\u6b21\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;he.*o&quot;<\/p>\n<p>string = &quot;heo&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u52a0\u53f7\uff08+\uff09<\/strong><\/li>\n<\/ol>\n<p><p>\u52a0\u53f7\u5339\u914d\u524d\u9762\u7684\u5b57\u7b261\u6b21\u6216\u591a\u6b21\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;he.+o&quot;<\/p>\n<p>string = &quot;heo&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"4\">\n<li><strong>\u95ee\u53f7\uff08?\uff09<\/strong><\/li>\n<\/ol>\n<p><p>\u95ee\u53f7\u5339\u914d\u524d\u9762\u7684\u5b57\u7b260\u6b21\u62161\u6b21\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;he.?o&quot;<\/p>\n<p>string = &quot;heo&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"5\">\n<li><strong>\u82b1\u62ec\u53f7\uff08{n,m}\uff09<\/strong><\/li>\n<\/ol>\n<p><p>\u82b1\u62ec\u53f7\u7528\u4e8e\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26n\u5230m\u6b21\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;he{1,2}o&quot;<\/p>\n<p>string = &quot;heo&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u7684\u5206\u7ec4\u4e0e\u53cd\u5411\u5f15\u7528<\/p>\n<\/p>\n<p><p>\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5706\u62ec\u53f7()\u6765\u521b\u5efa\u5206\u7ec4\u3002\u5206\u7ec4\u5141\u8bb8\u4f60\u5728\u5339\u914d\u4e2d\u6355\u83b7\u5b50\u6a21\u5f0f\uff0c\u5e76\u4f7f\u7528\u53cd\u5411\u5f15\u7528\u6765\u91cd\u65b0\u4f7f\u7528\u8fd9\u4e9b\u5b50\u6a21\u5f0f\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u5206\u7ec4<\/strong><\/li>\n<\/ol>\n<p><p>\u5206\u7ec4\u901a\u8fc7\u5706\u62ec\u53f7()\u5b9e\u73b0\uff0c\u53ef\u4ee5\u6355\u83b7\u5339\u914d\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;(hello) (world)&quot;<\/p>\n<p>string = &quot;hello world&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Group 1:&quot;, match.group(1))<\/p>\n<p>    print(&quot;Group 2:&quot;, match.group(2))<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u53cd\u5411\u5f15\u7528<\/strong><\/li>\n<\/ol>\n<p><p>\u53cd\u5411\u5f15\u7528\u5141\u8bb8\u5728\u540c\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u5f15\u7528\u4e4b\u524d\u5b9a\u4e49\u7684\u5206\u7ec4\u3002\u53cd\u5411\u5f15\u7528\u7684\u8bed\u6cd5\u662f<code>\\1<\/code>, <code>\\2<\/code>\u7b49\uff0c\u8868\u793a\u7b2c\u4e00\u4e2a\u3001\u7b2c\u4e8c\u4e2a\u5206\u7ec4\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;(hello) \\1&quot;<\/p>\n<p>string = &quot;hello hello&quot;<\/p>\n<p>match = re.match(pattern, string)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5e38\u7528\u6280\u5de7<\/p>\n<\/p>\n<p><p>\u5728\u5904\u7406\u6b63\u5219\u8868\u8fbe\u5f0f\u65f6\uff0c\u6709\u4e00\u4e9b\u5e38\u7528\u7684\u6280\u5de7\u53ef\u4ee5\u5e2e\u52a9\u63d0\u9ad8\u6548\u7387\u548c\u51c6\u786e\u6027\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u4f7f\u7528\u539f\u59cb\u5b57\u7b26\u4e32<\/strong><\/li>\n<\/ol>\n<p><p>\u5728Python\u4e2d\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u901a\u5e38\u4f7f\u7528\u539f\u59cb\u5b57\u7b26\u4e32\uff08\u4ee5r\u5f00\u5934\uff09\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u8f6c\u4e49\u5b57\u7b26\u5e26\u6765\u7684\u56f0\u6270\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u975e\u8d2a\u5a6a\u5339\u914d<\/strong><\/li>\n<\/ol>\n<p><p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u8d2a\u5a6a\u7684\uff0c\u5373\u5c3d\u53ef\u80fd\u591a\u5730\u5339\u914d\u5b57\u7b26\u3002\u53ef\u4ee5\u4f7f\u7528<code>?<\/code>\u6765\u6307\u5b9a\u975e\u8d2a\u5a6a\u5339\u914d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;&lt;.*?&gt;&quot;<\/p>\n<p>string = &quot;&lt;html&gt;&lt;head&gt;&lt;\/head&gt;&lt;\/html&gt;&quot;<\/p>\n<p>matches = re.findall(pattern, string)<\/p>\n<p>print(&quot;Matches found:&quot;, matches)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u4f7f\u7528\u6807\u5fd7<\/strong><\/li>\n<\/ol>\n<p><p>re\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6807\u5fd7\uff0c\u53ef\u4ee5\u4fee\u6539\u5339\u914d\u7684\u884c\u4e3a\uff0c\u4f8b\u5982<code>re.IGNORECASE<\/code>\u7528\u4e8e\u5ffd\u7565\u5927\u5c0f\u5199\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import re<\/p>\n<p>pattern = r&quot;hello&quot;<\/p>\n<p>string = &quot;HELLO&quot;<\/p>\n<p>match = re.match(pattern, string, re.IGNORECASE)<\/p>\n<p>if match:<\/p>\n<p>    print(&quot;Match found:&quot;, match.group())<\/p>\n<p>else:<\/p>\n<p>    print(&quot;No match&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e94\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n<p><p>\u6b63\u5219\u8868\u8fbe\u5f0f\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u6709\u5e7f\u6cdb\u7684\u7528\u9014\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\uff1a<\/p>\n<\/p>\n<ol>\n<li><strong>\u8f93\u5165\u9a8c\u8bc1<\/strong><\/li>\n<\/ol>\n<p><p>\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\u7684\u683c\u5f0f\u662f\u5426\u6b63\u786e\uff0c\u4f8b\u5982\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u3001\u7535\u8bdd\u53f7\u7801\u7b49\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u6570\u636e\u63d0\u53d6<\/strong><\/li>\n<\/ol>\n<p><p>\u4ece\u6587\u672c\u4e2d\u63d0\u53d6\u7279\u5b9a\u683c\u5f0f\u7684\u6570\u636e\uff0c\u4f8b\u5982\u65e5\u671f\u3001\u65f6\u95f4\u3001URL\u7b49\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u6587\u672c\u66ff\u6362<\/strong><\/li>\n<\/ol>\n<p><p>\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u590d\u6742\u7684\u6587\u672c\u66ff\u6362\u64cd\u4f5c\uff0c\u4f8b\u5982\u66ff\u6362\u654f\u611f\u4fe1\u606f\u3001\u683c\u5f0f\u5316\u6587\u672c\u7b49\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u5bfc\u5165re\u6a21\u5757\u5e76\u638c\u63e1\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u57fa\u672c\u8bed\u6cd5\u548c\u6280\u5de7\uff0c\u53ef\u4ee5\u6781\u5927\u5730\u63d0\u9ad8\u5b57\u7b26\u4e32\u5904\u7406\u7684\u6548\u7387\u548c\u7075\u6d3b\u6027\u3002\u65e0\u8bba\u662f\u5728\u6570\u636e\u6e05\u6d17\u3001\u6587\u672c\u5206\u6790\u8fd8\u662f\u7f51\u7edc\u722c\u866b\u4e2d\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u90fd\u662f\u4e00\u9879\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5bfc\u5165re\u6a21\u5757\uff1f<\/strong><br \/>\u8981\u5728Python\u4e2d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u529f\u80fd\uff0c\u60a8\u9700\u8981\u5bfc\u5165re\u6a21\u5757\u3002\u53ef\u4ee5\u901a\u8fc7\u5728\u4ee3\u7801\u7684\u5f00\u5934\u6dfb\u52a0<code>import re<\/code>\u6765\u5b8c\u6210\u5bfc\u5165\u3002\u8fd9\u4e00\u884c\u4ee3\u7801\u5c06\u4f7f\u60a8\u80fd\u591f\u4f7f\u7528re\u6a21\u5757\u63d0\u4f9b\u7684\u6240\u6709\u529f\u80fd\uff0c\u6bd4\u5982\u641c\u7d22\u3001\u5339\u914d\u548c\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u6a21\u5f0f\u3002<\/p>\n<p><strong>re\u6a21\u5757\u4e2d\u6709\u54ea\u4e9b\u5e38\u7528\u7684\u51fd\u6570\uff1f<\/strong><br \/>re\u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u51fd\u6570\u6765\u5904\u7406\u5b57\u7b26\u4e32\u3002\u5e38\u7528\u7684\u6709<code>re.search()<\/code>\u7528\u4e8e\u67e5\u627e\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u67d0\u4e2a\u6a21\u5f0f\uff0c<code>re.match()<\/code>\u7528\u4e8e\u4ece\u5b57\u7b26\u4e32\u7684\u8d77\u59cb\u4f4d\u7f6e\u5339\u914d\u6a21\u5f0f\uff0c<code>re.findall()<\/code>\u7528\u4e8e\u8fd4\u56de\u6240\u6709\u5339\u914d\u7684\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u4ee5\u53ca<code>re.sub()<\/code>\u7528\u4e8e\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u6307\u5b9a\u6a21\u5f0f\u3002\u8fd9\u4e9b\u51fd\u6570\u4e3a\u6587\u672c\u5904\u7406\u548c\u6570\u636e\u6e05\u6d17\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\u3002<\/p>\n<p><strong>\u5728\u5bfc\u5165re\u6a21\u5757\u540e\uff0c\u6211\u5982\u4f55\u6d4b\u8bd5\u6b63\u5219\u8868\u8fbe\u5f0f\uff1f<\/strong><br \/>\u5bfc\u5165re\u6a21\u5757\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528re\u6a21\u5757\u7684\u51fd\u6570\u6765\u6d4b\u8bd5\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u60a8\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u5e76\u7528\u5b83\u5339\u914d\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>re.search(r&#39;\\d+&#39;, &#39;abc123&#39;)<\/code>\u53ef\u4ee5\u67e5\u627e\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u6709\u6570\u5b57\u3002\u5982\u679c\u5b58\u5728\uff0c\u8fd4\u56de\u7684\u7ed3\u679c\u5c06\u5305\u542b\u627e\u5230\u7684\u5339\u914d\u9879\u7684\u4fe1\u606f\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u9a8c\u8bc1\u60a8\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5426\u6309\u9884\u671f\u5de5\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5bfc\u5165re\u6a21\u5757\u7684\u65b9\u6cd5\u662f\u4f7f\u7528import\u8bed\u53e5\uff0c\u901a\u8fc7\u8be5\u8bed\u53e5\u53ef\u4ee5\u5c06re\u6a21\u5757\u5f15\u5165\u5230\u4f60\u7684Python\u811a\u672c\u4e2d [&hellip;]","protected":false},"author":3,"featured_media":965757,"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\/965751"}],"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=965751"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/965751\/revisions"}],"predecessor-version":[{"id":965759,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/965751\/revisions\/965759"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/965757"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=965751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=965751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=965751"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}