{"id":1007008,"date":"2024-12-27T10:49:28","date_gmt":"2024-12-27T02:49:28","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1007008.html"},"modified":"2024-12-27T10:49:31","modified_gmt":"2024-12-27T02:49:31","slug":"python-%e5%ad%97%e5%85%b8%e5%a6%82%e4%bd%95%e6%8c%87%e5%90%91%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1007008.html","title":{"rendered":"python \u5b57\u5178\u5982\u4f55\u6307\u5411\u503c"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25082905\/132bfedc-3fea-4fdb-896e-39d8d7b8c0ba.webp\" alt=\"python \u5b57\u5178\u5982\u4f55\u6307\u5411\u503c\" \/><\/p>\n<p><p> <strong>Python\u5b57\u5178\u901a\u8fc7\u952e\u6765\u6307\u5411\u503c\u3001\u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5\u3001\u652f\u6301\u5d4c\u5957\u5b57\u5178\u3002<\/strong> \u5728Python\u4e2d\uff0c\u5b57\u5178\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u7684\u53ef\u53d8\u96c6\u5408\uff0c\u5b83\u4ee5\u952e-\u503c\u5bf9\u7684\u5f62\u5f0f\u5b58\u50a8\u6570\u636e\u3002\u53ef\u4ee5\u901a\u8fc7\u952e\u6765\u8bbf\u95ee\u5bf9\u5e94\u7684\u503c\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u5b57\u5178\u53ca\u5176\u7279\u6027\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u5b57\u5178\u7684\u57fa\u672c\u64cd\u4f5c<\/p>\n<\/p>\n<p><p>Python\u5b57\u5178\u662f\u4e00\u79cd\u65e0\u5e8f\u3001\u53ef\u53d8\u7684\u952e\u503c\u5bf9\u96c6\u5408\u3002\u6bcf\u4e2a\u952e\u5fc5\u987b\u662f\u552f\u4e00\u7684\uff0c\u901a\u5e38\u4e3a\u4e0d\u53ef\u53d8\u7c7b\u578b\uff08\u5982\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u6216\u5143\u7ec4\uff09\uff0c\u800c\u503c\u53ef\u4ee5\u662f\u4efb\u610f\u7684\u6570\u636e\u7c7b\u578b\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\uff0c\u53ef\u4ee5\u4f7f\u7528\u5927\u62ec\u53f7 <code>{}<\/code> \u6216\u8005 <code>dict()<\/code> \u51fd\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u4f7f\u7528\u5927\u62ec\u53f7\u521b\u5efa\u5b57\u5178<\/p>\n<p>my_dict = {&quot;name&quot;: &quot;Alice&quot;, &quot;age&quot;: 25, &quot;city&quot;: &quot;New York&quot;}<\/p>\n<h2><strong>\u4f7f\u7528 dict() \u51fd\u6570\u521b\u5efa\u5b57\u5178<\/strong><\/h2>\n<p>my_dict = dict(name=&quot;Alice&quot;, age=25, city=&quot;New York&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8bbf\u95ee\u5b57\u5178\u4e2d\u7684\u503c\u9700\u8981\u4f7f\u7528\u952e\u4f5c\u4e3a\u7d22\u5f15\u3002\u901a\u8fc7\u65b9\u62ec\u53f7\u8bed\u6cd5\uff0c\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u5bf9\u5e94\u952e\u7684\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">name = my_dict[&quot;name&quot;]  # \u8f93\u51fa: Alice<\/p>\n<p>age = my_dict[&quot;age&quot;]    # \u8f93\u51fa: 25<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5982\u679c\u8bbf\u95ee\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u952e\uff0c\u4f1a\u629b\u51fa <code>KeyError<\/code>\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u9519\u8bef\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>get()<\/code> \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5982\u679c\u952e\u4e0d\u5b58\u5728\u5219\u8fd4\u56de <code>None<\/code> \u6216\u8005\u6307\u5b9a\u7684\u9ed8\u8ba4\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">gender = my_dict.get(&quot;gender&quot;, &quot;Not specified&quot;)  # \u8f93\u51fa: Not specified<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e8c\u3001\u5b57\u5178\u7684\u589e\u5220\u6539\u64cd\u4f5c<\/p>\n<\/p>\n<p><p>\u5b57\u5178\u662f\u53ef\u53d8\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8f7b\u677e\u5730\u6dfb\u52a0\u3001\u5220\u9664\u6216\u4fee\u6539\u5143\u7d20\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u6dfb\u52a0\u5143\u7d20<\/strong><\/li>\n<\/ol>\n<p><p>\u8981\u5411\u5b57\u5178\u4e2d\u6dfb\u52a0\u65b0\u5143\u7d20\uff0c\u53ea\u9700\u6307\u5b9a\u65b0\u952e\u548c\u503c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_dict[&quot;em<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>l&quot;] = &quot;alice@example.com&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u4fee\u6539\u5143\u7d20<\/strong><\/li>\n<\/ol>\n<p><p>\u901a\u8fc7\u91cd\u65b0\u5206\u914d\u952e\u7684\u503c\uff0c\u53ef\u4ee5\u4fee\u6539\u5b57\u5178\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_dict[&quot;age&quot;] = 30<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u5220\u9664\u5143\u7d20<\/strong><\/li>\n<\/ol>\n<p><p>\u53ef\u4ee5\u4f7f\u7528 <code>del<\/code> \u5173\u952e\u5b57\u6216 <code>pop()<\/code> \u65b9\u6cd5\u5220\u9664\u5b57\u5178\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u4f7f\u7528 del \u5173\u952e\u5b57<\/p>\n<p>del my_dict[&quot;city&quot;]<\/p>\n<h2><strong>\u4f7f\u7528 pop() \u65b9\u6cd5<\/strong><\/h2>\n<p>age = my_dict.pop(&quot;age&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u5b57\u5178\u7684\u904d\u5386<\/p>\n<\/p>\n<p><p>\u5b57\u5178\u652f\u6301\u591a\u79cd\u65b9\u5f0f\u7684\u904d\u5386\uff0c\u53ef\u4ee5\u904d\u5386\u952e\u3001\u503c\u6216\u952e\u503c\u5bf9\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u904d\u5386\u952e<\/strong><\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">for key in my_dict.keys():<\/p>\n<p>    print(key)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u904d\u5386\u503c<\/strong><\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">for value in my_dict.values():<\/p>\n<p>    print(value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u904d\u5386\u952e\u503c\u5bf9<\/strong><\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">for key, value in my_dict.items():<\/p>\n<p>    print(f&quot;{key}: {value}&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001\u5b57\u5178\u7684\u9ad8\u7ea7\u7279\u6027<\/p>\n<\/p>\n<ol>\n<li><strong>\u5d4c\u5957\u5b57\u5178<\/strong><\/li>\n<\/ol>\n<p><p>\u5b57\u5178\u53ef\u4ee5\u5d4c\u5957\uff0c\u5373\u5b57\u5178\u7684\u503c\u53ef\u4ee5\u662f\u53e6\u4e00\u4e2a\u5b57\u5178\u3002\u8fd9\u5728\u9700\u8981\u5b58\u50a8\u590d\u6742\u6570\u636e\u7ed3\u6784\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">nested_dict = {<\/p>\n<p>    &quot;person1&quot;: {&quot;name&quot;: &quot;Alice&quot;, &quot;age&quot;: 30},<\/p>\n<p>    &quot;person2&quot;: {&quot;name&quot;: &quot;Bob&quot;, &quot;age&quot;: 25}<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8bbf\u95ee\u5d4c\u5957\u5b57\u5178\u4e2d\u7684\u5143\u7d20\u65f6\uff0c\u9700\u8981\u4f9d\u6b21\u4f7f\u7528\u952e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">name_of_person1 = nested_dict[&quot;person1&quot;][&quot;name&quot;]  # \u8f93\u51fa: Alice<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u5b57\u5178\u63a8\u5bfc\u5f0f<\/strong><\/li>\n<\/ol>\n<p><p>\u5b57\u5178\u63a8\u5bfc\u5f0f\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u6cd5\u6765\u521b\u5efa\u5b57\u5178\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">squared_numbers = {x: x*x for x in range(6)}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u5408\u5e76\u5b57\u5178<\/strong><\/li>\n<\/ol>\n<p><p>Python 3.5\u53ca\u4ee5\u4e0a\u7248\u672c\u652f\u6301\u4f7f\u7528 <code><\/code> \u8fd0\u7b97\u7b26\u5408\u5e76\u5b57\u5178\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">dict1 = {&quot;a&quot;: 1, &quot;b&quot;: 2}<\/p>\n<p>dict2 = {&quot;b&quot;: 3, &quot;c&quot;: 4}<\/p>\n<p>merged_dict = {&lt;strong&gt;dict1, &lt;\/strong&gt;dict2}  # \u8f93\u51fa: {&#39;a&#39;: 1, &#39;b&#39;: 3, &#39;c&#39;: 4}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e94\u3001\u5b57\u5178\u7684\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n<p><p>\u5b57\u5178\u5728\u8bb8\u591a\u5e94\u7528\u573a\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u6bd4\u5982\uff1a<\/p>\n<\/p>\n<ol>\n<li><strong>\u914d\u7f6e\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n<p><p>\u5b57\u5178\u53ef\u4ee5\u5b58\u50a8\u914d\u7f6e\u4fe1\u606f\uff0c\u4fbf\u4e8e\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684\u8bbe\u7f6e\u53ef\u4ee5\u5b58\u50a8\u5728\u5b57\u5178\u4e2d\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">config = {<\/p>\n<p>    &quot;debug&quot;: True,<\/p>\n<p>    &quot;database&quot;: {<\/p>\n<p>        &quot;host&quot;: &quot;localhost&quot;,<\/p>\n<p>        &quot;port&quot;: 3306<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u6570\u636e\u805a\u5408<\/strong><\/li>\n<\/ol>\n<p><p>\u5728\u6570\u636e\u5206\u6790\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u805a\u5408\u548c\u7edf\u8ba1\uff0c\u5b57\u5178\u53ef\u4ee5\u5e2e\u52a9\u5b58\u50a8\u548c\u8ba1\u7b97\u8fd9\u4e9b\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u7edf\u8ba1\u4e00\u7ec4\u6570\u636e\u4e2d\u6bcf\u4e2a\u5143\u7d20\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = [&quot;apple&quot;, &quot;banana&quot;, &quot;apple&quot;, &quot;orange&quot;, &quot;banana&quot;, &quot;apple&quot;]<\/p>\n<p>frequency = {}<\/p>\n<p>for item in data:<\/p>\n<p>    if item in frequency:<\/p>\n<p>        frequency[item] += 1<\/p>\n<p>    else:<\/p>\n<p>        frequency[item] = 1<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u5feb\u901f\u67e5\u627e<\/strong><\/li>\n<\/ol>\n<p><p>\u5b57\u5178\u7684\u54c8\u5e0c\u8868\u7ed3\u6784\u4f7f\u5f97\u67e5\u627e\u64cd\u4f5c\u975e\u5e38\u9ad8\u6548\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(1)\u3002\u56e0\u6b64\uff0c\u5728\u9700\u8981\u8fdb\u884c\u5feb\u901f\u67e5\u627e\u7684\u573a\u666f\u4e2d\uff0c\u5b57\u5178\u662f\u4e00\u79cd\u7406\u60f3\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<p><p>\u516d\u3001\u5b57\u5178\u7684\u6027\u80fd\u4f18\u5316<\/p>\n<\/p>\n<p><p>\u5b57\u5178\u7684\u64cd\u4f5c\u901a\u5e38\u975e\u5e38\u9ad8\u6548\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u5bf9\u6027\u80fd\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u9009\u62e9\u5408\u9002\u7684\u952e<\/strong><\/li>\n<\/ol>\n<p><p>\u7531\u4e8e\u5b57\u5178\u7684\u952e\u4f1a\u8fdb\u884c\u54c8\u5e0c\u8fd0\u7b97\uff0c\u56e0\u6b64\u9009\u62e9\u5408\u9002\u7684\u952e\u7c7b\u578b\uff08\u5982\u5b57\u7b26\u4e32\u6216\u6570\u5b57\uff09\u53ef\u4ee5\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u590d\u5236<\/strong><\/li>\n<\/ol>\n<p><p>\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5b57\u5178\u590d\u5236\u53ef\u4ee5\u8282\u7701\u5185\u5b58\u548c\u65f6\u95f4\u3002\u53ef\u4ee5\u901a\u8fc7\u5f15\u7528\u7684\u65b9\u5f0f\u6765\u5171\u4eab\u5b57\u5178\uff0c\u800c\u4e0d\u662f\u590d\u5236\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u4f7f\u7528\u9ed8\u8ba4\u503c<\/strong><\/li>\n<\/ol>\n<p><p>\u5728\u9700\u8981\u521d\u59cb\u5316\u5b57\u5178\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>defaultdict<\/code>\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u4e3a\u65b0\u952e\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u907f\u514d\u624b\u52a8\u68c0\u67e5\u952e\u662f\u5426\u5b58\u5728\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from collections import defaultdict<\/p>\n<p>frequency = defaultdict(int)<\/p>\n<p>for item in data:<\/p>\n<p>    frequency[item] += 1<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e03\u3001\u5b57\u5178\u7684\u6ce8\u610f\u4e8b\u9879<\/p>\n<\/p>\n<ol>\n<li><strong>\u952e\u7684\u552f\u4e00\u6027<\/strong><\/li>\n<\/ol>\n<p><p>\u5b57\u5178\u4e2d\u7684\u952e\u5fc5\u987b\u662f\u552f\u4e00\u7684\u3002\u5982\u679c\u5728\u521b\u5efa\u6216\u66f4\u65b0\u5b57\u5178\u65f6\u6307\u5b9a\u4e86\u91cd\u590d\u952e\uff0c\u540e\u9762\u7684\u503c\u4f1a\u8986\u76d6\u524d\u9762\u7684\u503c\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u952e\u7684\u4e0d\u53ef\u53d8\u6027<\/strong><\/li>\n<\/ol>\n<p><p>\u5b57\u5178\u7684\u952e\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b\uff0c\u6bd4\u5982\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u6216\u5143\u7ec4\u3002\u800c\u5217\u8868\u548c\u5b57\u5178\u7b49\u53ef\u53d8\u7c7b\u578b\u4e0d\u80fd\u4f5c\u4e3a\u952e\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u5b57\u5178\u7684\u987a\u5e8f\u6027<\/strong><\/li>\n<\/ol>\n<p><p>\u5728Python 3.7\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u5b57\u5178\u4fdd\u6301\u63d2\u5165\u987a\u5e8f\u3002\u8fd9\u610f\u5473\u7740\u904d\u5386\u5b57\u5178\u65f6\uff0c\u5143\u7d20\u7684\u987a\u5e8f\u5c06\u662f\u63d2\u5165\u7684\u987a\u5e8f\u3002\u7136\u800c\uff0c\u8fd9\u4e00\u7279\u6027\u5728\u8f83\u4f4e\u7248\u672c\u4e2d\u5e76\u4e0d\u4fdd\u8bc1\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u5bf9\u5b57\u5178\u7684\u5168\u9762\u4e86\u89e3\u548c\u7075\u6d3b\u5e94\u7528\uff0c\u53ef\u4ee5\u5728Python\u7f16\u7a0b\u4e2d\u66f4\u9ad8\u6548\u5730\u7ec4\u7ec7\u548c\u5904\u7406\u6570\u636e\u3002\u65e0\u8bba\u662f\u5728\u7b80\u5355\u7684\u4efb\u52a1\u8fd8\u662f\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u5b57\u5178\u90fd\u662f\u4e00\u79cd\u5f3a\u5927\u800c\u4fbf\u5229\u7684\u5de5\u5177\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u5b57\u5178\u4e2d\u83b7\u53d6\u7279\u5b9a\u952e\u7684\u503c\uff1f<\/strong><br \/>\u5728Python\u5b57\u5178\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u952e\u6765\u8bbf\u95ee\u5bf9\u5e94\u7684\u503c\u3002\u901a\u8fc7\u7b80\u5355\u7684\u8bed\u6cd5<code>dict_name[key]<\/code>\u5373\u53ef\u83b7\u53d6\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u5b57\u5178<code>my_dict = {&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 25}<\/code>\uff0c\u8981\u83b7\u53d6<code>name<\/code>\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528<code>my_dict[&#39;name&#39;]<\/code>\uff0c\u7ed3\u679c\u5c06\u8fd4\u56de<code>&#39;Alice&#39;<\/code>\u3002<\/p>\n<p><strong>\u5982\u4f55\u68c0\u67e5\u4e00\u4e2a\u952e\u662f\u5426\u5b58\u5728\u4e8ePython\u5b57\u5178\u4e2d\uff1f<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528<code>in<\/code>\u5173\u952e\u5b57\u6765\u68c0\u67e5\u4e00\u4e2a\u952e\u662f\u5426\u5b58\u5728\u4e8e\u5b57\u5178\u4e2d\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>key in dict_name<\/code>\u53ef\u4ee5\u8fd4\u56de\u5e03\u5c14\u503c\u3002\u5982\u679c<code>my_dict<\/code>\u4e2d\u5305\u542b<code>&#39;age&#39;<\/code>\u8fd9\u4e2a\u952e\uff0c<code>&#39;age&#39; in my_dict<\/code>\u5c06\u8fd4\u56de<code>True<\/code>\uff0c\u5426\u5219\u8fd4\u56de<code>False<\/code>\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u5b57\u5178\u4e2d\u66f4\u65b0\u6216\u6dfb\u52a0\u503c\uff1f<\/strong><br \/>\u66f4\u65b0\u5b57\u5178\u4e2d\u7684\u503c\u975e\u5e38\u7b80\u5355\u3002\u53ef\u4ee5\u4f7f\u7528<code>dict_name[key] = new_value<\/code>\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u3002\u5982\u679c\u952e\u5df2\u7ecf\u5b58\u5728\uff0c\u65b0\u7684\u503c\u5c06\u66ff\u6362\u65e7\u503c\uff1b\u5982\u679c\u952e\u4e0d\u5b58\u5728\uff0c\u5219\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u952e\u503c\u5bf9\u3002\u4f8b\u5982\uff0c<code>my_dict[&#39;age&#39;] = 26<\/code>\u5c06\u66f4\u65b0\u5e74\u9f84\u4e3a26\uff0c\u800c<code>my_dict[&#39;city&#39;] = &#39;New York&#39;<\/code>\u5c06\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u952e\u503c\u5bf9\uff0c\u7ed3\u679c\u5b57\u5178\u5c06\u5305\u542b<code>{&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 26, &#39;city&#39;: &#39;New York&#39;}<\/code>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u5b57\u5178\u901a\u8fc7\u952e\u6765\u6307\u5411\u503c\u3001\u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5\u3001\u652f\u6301\u5d4c\u5957\u5b57\u5178\u3002 \u5728Python\u4e2d\uff0c\u5b57\u5178\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u7684\u53ef\u53d8 [&hellip;]","protected":false},"author":3,"featured_media":1007017,"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\/1007008"}],"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=1007008"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1007008\/revisions"}],"predecessor-version":[{"id":1007018,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1007008\/revisions\/1007018"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1007017"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1007008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1007008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1007008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}