{"id":934584,"date":"2024-12-26T18:37:57","date_gmt":"2024-12-26T10:37:57","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/934584.html"},"modified":"2024-12-26T18:38:00","modified_gmt":"2024-12-26T10:38:00","slug":"python%e5%a6%82%e4%bd%95%e8%b0%83%e7%94%a8str","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/934584.html","title":{"rendered":"python\u5982\u4f55\u8c03\u7528str"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25071533\/735047a8-481c-4a25-8513-114528806e8b.webp\" alt=\"python\u5982\u4f55\u8c03\u7528str\" \/><\/p>\n<p><p> <strong>Python\u8c03\u7528<code>str<\/code>\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u76f4\u63a5\u521b\u5efa\u5b57\u7b26\u4e32\u5bf9\u8c61\u3001\u4f7f\u7528<code>str()<\/code>\u51fd\u6570\u3001\u901a\u8fc7\u683c\u5f0f\u5316\u521b\u5efa\u5b57\u7b26\u4e32\u3001\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\u7b49\u3002\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u4f7f\u7528<code>str()<\/code>\u51fd\u6570\u53ef\u4ee5\u5c06\u5176\u4ed6\u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u8fd9\u5728\u9700\u8981\u5c06\u6570\u503c\u6216\u5176\u4ed6\u7c7b\u578b\u7684\u6570\u636e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u8fdb\u884c\u62fc\u63a5\u6216\u8f93\u51fa\u65f6\u975e\u5e38\u6709\u7528\u3002<\/strong><\/p>\n<\/p>\n<p><p>\u4e00\u3001\u76f4\u63a5\u521b\u5efa\u5b57\u7b26\u4e32\u5bf9\u8c61<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u521b\u5efa\u5b57\u7b26\u4e32\u5bf9\u8c61\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u53ef\u4ee5\u901a\u8fc7\u5355\u5f15\u53f7<code>&#39; &#39;<\/code>\u6216\u53cc\u5f15\u53f7<code>&quot; &quot;<\/code>\u6765\u5b9a\u4e49\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_string = &#39;Hello, World!&#39;<\/p>\n<p>another_string = &quot;Python is great!&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u76f4\u63a5\u521b\u5efa\u5b57\u7b26\u4e32\u5bf9\u8c61\u662f\u4e00\u79cd\u57fa\u672c\u800c\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7684\u5b57\u7b26\u4e32\u5b9a\u4e49\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528<code>str()<\/code>\u51fd\u6570<\/p>\n<\/p>\n<p><p><code>str()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4e8e\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002\u8fd9\u4e2a\u51fd\u6570\u7279\u522b\u6709\u7528\uff0c\u5f53\u4f60\u9700\u8981\u5c06\u5176\u4ed6\u6570\u636e\u7c7b\u578b\uff08\u5982\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5217\u8868\u7b49\uff09\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u65f6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">number = 123<\/p>\n<p>string_number = str(number)  # \u8f6c\u6362\u6574\u6570\u4e3a\u5b57\u7b26\u4e32<\/p>\n<p>floating_point = 3.14159<\/p>\n<p>string_float = str(floating_point)  # \u8f6c\u6362\u6d6e\u70b9\u6570\u4e3a\u5b57\u7b26\u4e32<\/p>\n<p>my_list = [1, 2, 3]<\/p>\n<p>string_list = str(my_list)  # \u8f6c\u6362\u5217\u8868\u4e3a\u5b57\u7b26\u4e32<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4f7f\u7528<code>str()<\/code>\u51fd\u6570\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u5728\u9700\u8981\u65f6\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u5b58\u5728\uff0c\u4fbf\u4e8e\u8fdb\u884c\u5b57\u7b26\u4e32\u62fc\u63a5\u3001\u8f93\u51fa\u7b49\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u901a\u8fc7\u683c\u5f0f\u5316\u521b\u5efa\u5b57\u7b26\u4e32<\/p>\n<\/p>\n<p><p>Python\u63d0\u4f9b\u4e86\u591a\u79cd\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\uff0c\u5982\u4f7f\u7528\u767e\u5206\u53f7<code>%<\/code>\u3001<code>str.format()<\/code>\u65b9\u6cd5\u548cf-string\uff08\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u5b57\u9762\u503c\uff09\u3002\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5728\u5b57\u7b26\u4e32\u4e2d\u63d2\u5165\u53d8\u91cf\u6216\u8868\u8fbe\u5f0f\u7684\u503c\u3002<\/p>\n<\/p>\n<ol>\n<li>\u767e\u5206\u53f7\u683c\u5f0f\u5316<\/li>\n<\/ol>\n<p><p>\u767e\u5206\u53f7\u683c\u5f0f\u5316\u662fPython\u4e2d\u4e00\u79cd\u65e7\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">name = &quot;Alice&quot;<\/p>\n<p>age = 30<\/p>\n<p>formatted_string = &quot;My name is %s and I am %d years old.&quot; % (name, age)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><code>str.format()<\/code>\u65b9\u6cd5<\/li>\n<\/ol>\n<p><p><code>str.format()<\/code>\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u7075\u6d3b\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u65b9\u5f0f\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">name = &quot;Bob&quot;<\/p>\n<p>age = 25<\/p>\n<p>formatted_string = &quot;My name is {} and I am {} years old.&quot;.format(name, age)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li>f-string\uff08\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u5b57\u9762\u503c\uff09<\/li>\n<\/ol>\n<p><p>f-string\u662f\u5728Python 3.6\u4e2d\u5f15\u5165\u7684\u4e00\u79cd\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u65b0\u65b9\u6cd5\uff0c\u4f7f\u7528<code>f<\/code>\u524d\u7f00\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">name = &quot;Charlie&quot;<\/p>\n<p>age = 28<\/p>\n<p>formatted_string = f&quot;My name is {name} and I am {age} years old.&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>f-string\u56e0\u5176\u7b80\u6d01\u548c\u53ef\u8bfb\u6027\u9ad8\u800c\u53d7\u5230\u5e7f\u6cdb\u6b22\u8fce\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5<\/p>\n<\/p>\n<p><p>Python\u7684<code>str<\/code>\u7c7b\u63d0\u4f9b\u4e86\u8bb8\u591a\u5185\u7f6e\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u64cd\u4f5c\u548c\u5904\u7406\u5b57\u7b26\u4e32\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\uff1a<\/p>\n<\/p>\n<ol>\n<li><code>upper()<\/code>\u548c<code>lower()<\/code>\uff1a\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\u6216\u5c0f\u5199\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">original_string = &quot;Hello, World!&quot;<\/p>\n<p>uppercase_string = original_string.upper()  # &quot;HELLO, WORLD!&quot;<\/p>\n<p>lowercase_string = original_string.lower()  # &quot;hello, world!&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><code>strip()<\/code>\uff1a\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7a7a\u767d\u5b57\u7b26\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">whitespace_string = &quot;   Hello, World!   &quot;<\/p>\n<p>stripped_string = whitespace_string.strip()  # &quot;Hello, World!&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><code>replace()<\/code>\uff1a\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">original_string = &quot;I like Python programming.&quot;<\/p>\n<p>new_string = original_string.replace(&quot;Python&quot;, &quot;Java&quot;)  # &quot;I like Java programming.&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"4\">\n<li><code>split()<\/code>\u548c<code>join()<\/code>\uff1a\u5206\u5272\u5b57\u7b26\u4e32\u6216\u5408\u5e76\u5b57\u7b26\u4e32\u5217\u8868\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">csv_string = &quot;apple,banana,cherry&quot;<\/p>\n<p>fruits = csv_string.split(&quot;,&quot;)  # [&#39;apple&#39;, &#39;banana&#39;, &#39;cherry&#39;]<\/p>\n<p>delimiter = &quot;-&quot;<\/p>\n<p>joined_string = delimiter.join(fruits)  # &quot;apple-banana-cherry&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e9b\u5b57\u7b26\u4e32\u65b9\u6cd5\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\u6765\u5904\u7406\u6587\u672c\u6570\u636e\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u9ad8\u6548\u5730\u7f16\u5199\u4ee3\u7801\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u8c03\u7528Python\u7684<code>str<\/code>\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u72ec\u7279\u7684\u7528\u9014\u548c\u4f18\u70b9\u3002\u65e0\u8bba\u662f\u76f4\u63a5\u521b\u5efa\u5b57\u7b26\u4e32\u3001\u4f7f\u7528<code>str()<\/code>\u51fd\u6570\u8f6c\u6362\u6570\u636e\u7c7b\u578b\u3001\u901a\u8fc7\u5404\u79cd\u683c\u5f0f\u5316\u65b9\u6cd5\u521b\u5efa\u5b57\u7b26\u4e32\uff0c\u8fd8\u662f\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\u5904\u7406\u6587\u672c\uff0c\u8fd9\u4e9b\u90fd\u662fPython\u4e2d\u5904\u7406\u5b57\u7b26\u4e32\u7684\u57fa\u672c\u64cd\u4f5c\u3002\u7406\u89e3\u548c\u719f\u7ec3\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5c06\u6709\u52a9\u4e8e\u63d0\u9ad8\u7f16\u7a0b\u6548\u7387\u548c\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\uff1f<\/strong><br \/>Python\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u6bd4\u5982\u67e5\u627e\u3001\u66ff\u6362\u3001\u5206\u5272\u548c\u8fde\u63a5\u7b49\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e9b\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>str.upper()<\/code>\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\uff0c\u4f7f\u7528<code>str.replace(old, new)<\/code>\u53ef\u4ee5\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b50\u4e32\u3002\u5177\u4f53\u7684\u7528\u6cd5\u53ef\u4ee5\u53c2\u8003Python\u5b98\u65b9\u6587\u6863\uff0c\u4e86\u89e3\u6bcf\u4e2a\u65b9\u6cd5\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u3002<\/p>\n<p><strong>\u6211\u5e94\u8be5\u5982\u4f55\u5904\u7406\u5b57\u7b26\u4e32\u4e2d\u7684\u7a7a\u683c\u6216\u7279\u6b8a\u5b57\u7b26\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u5904\u7406\u5b57\u7b26\u4e32\u4e2d\u7684\u7a7a\u683c\u6216\u7279\u6b8a\u5b57\u7b26\u53ef\u4ee5\u4f7f\u7528<code>str.strip()<\/code>\u3001<code>str.lstrip()<\/code>\u548c<code>str.rstrip()<\/code>\u7b49\u65b9\u6cd5\u6765\u53bb\u6389\u5b57\u7b26\u4e32\u5f00\u5934\u548c\u7ed3\u5c3e\u7684\u7a7a\u683c\u3002\u6b64\u5916\uff0c<code>str.replace()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\uff0c\u975e\u5e38\u9002\u5408\u5904\u7406\u4e0d\u9700\u8981\u7684\u7279\u6b8a\u5b57\u7b26\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff1f<\/strong><br \/>Python\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u6765\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u5305\u62ec\u4f7f\u7528<code>f-string<\/code>\u3001<code>str.format()<\/code>\u65b9\u6cd5\u548c\u767e\u5206\u53f7\u683c\u5f0f\u5316\u3002<code>f-string<\/code>\u662fPython 3.6\u53ca\u4ee5\u4e0a\u7248\u672c\u5f15\u5165\u7684\uff0c\u80fd\u591f\u8ba9\u4f60\u5728\u5b57\u7b26\u4e32\u4e2d\u76f4\u63a5\u5d4c\u5165\u53d8\u91cf\uff0c\u8bed\u6cd5\u7b80\u6d01\u4e14\u6613\u8bfb\u3002\u4f8b\u5982\uff0c<code>name = &quot;Alice&quot;; greeting = f&quot;Hello, {name}!&quot;<\/code>\u3002\u4f7f\u7528\u8fd9\u4e9b\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u521b\u5efa\u52a8\u6001\u5b57\u7b26\u4e32\uff0c\u9002\u5e94\u4e0d\u540c\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8c03\u7528str\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u76f4\u63a5\u521b\u5efa\u5b57\u7b26\u4e32\u5bf9\u8c61\u3001\u4f7f\u7528str()\u51fd\u6570\u3001\u901a\u8fc7\u683c\u5f0f\u5316\u521b\u5efa\u5b57\u7b26\u4e32\u3001\u4f7f\u7528\u5b57\u7b26 [&hellip;]","protected":false},"author":3,"featured_media":934590,"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\/934584"}],"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=934584"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/934584\/revisions"}],"predecessor-version":[{"id":934592,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/934584\/revisions\/934592"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/934590"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=934584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=934584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=934584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}