{"id":1081187,"date":"2025-01-08T12:37:14","date_gmt":"2025-01-08T04:37:14","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1081187.html"},"modified":"2025-01-08T12:37:18","modified_gmt":"2025-01-08T04:37:18","slug":"python%e5%a6%82%e4%bd%95%e6%9f%a5%e6%89%be%e5%ad%97%e5%85%b8%e4%b8%ad%e7%9a%84%e5%80%bc-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1081187.html","title":{"rendered":"python\u5982\u4f55\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24183330\/140affca-7650-4597-92a7-ec9855dbad97.webp\" alt=\"python\u5982\u4f55\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c\" \/><\/p>\n<p><p> <strong>\u4e00\u3001\u76f4\u63a5\u56de\u7b54<\/strong><\/p>\n<\/p>\n<p><p>\u8981\u5728Python\u4e2d\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528<strong>\u952e\u8bbf\u95ee\u3001get()\u65b9\u6cd5\u3001items()\u65b9\u6cd5\u904d\u5386<\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528\u952e\u8bbf\u95ee\u662f\u6700\u5e38\u7528\u548c\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u952e\u76f4\u63a5\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\uff1bget()\u65b9\u6cd5\u5141\u8bb8\u5728\u952e\u4e0d\u5b58\u5728\u65f6\u8fd4\u56de\u9ed8\u8ba4\u503c\uff1bitems()\u65b9\u6cd5\u5219\u7528\u4e8e\u904d\u5386\u5b57\u5178\uff0c\u67e5\u627e\u7279\u5b9a\u7684\u503c\u3002<\/p>\n<\/p>\n<p><p><strong>\u952e\u8bbf\u95ee<\/strong>\u662f\u6700\u76f4\u89c2\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5b57\u5178\u540d\u52a0\u4e0a\u952e\u540d\u7684\u65b9\u5f0f\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\u3002\u4f8b\u5982\uff1a<code>value = my_dict[key]<\/code>\u3002<\/p>\n<\/p>\n<p><p><strong>\u8be6\u7ec6\u63cf\u8ff0<\/strong>\uff1a<strong>\u952e\u8bbf\u95ee<\/strong>\u65b9\u6cd5\u662f\u901a\u8fc7\u5b57\u5178\u540d\u52a0\u4e0a\u65b9\u62ec\u53f7\u4ee5\u53ca\u952e\u540d\u7684\u65b9\u5f0f\u6765\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\u3002\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u76f4\u89c2\uff0c\u9002\u7528\u4e8e\u786e\u5b9a\u952e\u5b58\u5728\u7684\u60c5\u51b5\u3002\u5982\u679c\u952e\u4e0d\u5b58\u5728\uff0c\u4f1a\u629b\u51faKeyError\u5f02\u5e38\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_dict = {&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 25, &#39;city&#39;: &#39;New York&#39;}<\/p>\n<p>value = my_dict[&#39;name&#39;]<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1aAlice<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u4e8c\u3001\u6b63\u6587\u7ae0\u8282<\/strong><\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u952e\u8bbf\u95ee\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u952e\u8bbf\u95ee\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5b57\u5178\u540d\u548c\u952e\u540d\u6765\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u597d\u5904\u5728\u4e8e\u7b80\u6d01\u660e\u4e86\uff0c\u4f46\u9700\u8981\u786e\u4fdd\u952e\u5728\u5b57\u5178\u4e2d\u5b58\u5728\uff0c\u5426\u5219\u4f1a\u5f15\u53d1KeyError\u5f02\u5e38\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u952e\u540d\u8bbf\u95ee\u5b57\u5178\u4e2d\u7684\u503c\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u5bf9\u5e94\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_dict = {&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 25, &#39;city&#39;: &#39;New York&#39;}<\/p>\n<p>value = my_dict[&#39;age&#39;]<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1a25<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u952e\u4e0d\u5b58\u5728\u65f6\u7684\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u952e\u4e0d\u5b58\u5728\uff0c\u4f1a\u5f15\u53d1KeyError\u5f02\u5e38\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">try:<\/p>\n<p>    value = my_dict[&#39;gender&#39;]<\/p>\n<p>except KeyError:<\/p>\n<p>    print(&#39;Key not found!&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001get()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>get()\u65b9\u6cd5\u5141\u8bb8\u5728\u952e\u4e0d\u5b58\u5728\u65f6\u8fd4\u56de\u9ed8\u8ba4\u503c\uff0c\u907f\u514dKeyError\u5f02\u5e38\u3002\u8fd9\u79cd\u65b9\u6cd5\u66f4\u4e3a\u5b89\u5168\uff0c\u9002\u7528\u4e8e\u4e0d\u786e\u5b9a\u952e\u662f\u5426\u5b58\u5728\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528get()\u65b9\u6cd5\u53ef\u4ee5\u5728\u952e\u5b58\u5728\u65f6\u8fd4\u56de\u5bf9\u5e94\u7684\u503c\uff0c\u4e0d\u5b58\u5728\u65f6\u8fd4\u56deNone\u6216\u6307\u5b9a\u7684\u9ed8\u8ba4\u503c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">value = my_dict.get(&#39;name&#39;)<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1aAlice<\/p>\n<p>value = my_dict.get(&#39;gender&#39;)<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1aNone<\/p>\n<p>value = my_dict.get(&#39;gender&#39;, &#39;Not specified&#39;)<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1aNot specified<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u4f18\u70b9<\/h4>\n<\/p>\n<p><p>get()\u65b9\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u907f\u514d\u4e86KeyError\u5f02\u5e38\uff0c\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u7684\u952e\u67e5\u627e\u65b9\u5f0f\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">value = my_dict.get(&#39;age&#39;, 0)  # \u5982\u679c&#39;age&#39;\u4e0d\u5b58\u5728\uff0c\u5219\u8fd4\u56de0<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1a25<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001items()\u65b9\u6cd5\u904d\u5386<\/h3>\n<\/p>\n<p><p>items()\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5b57\u5178\u7684\u952e\u503c\u5bf9\u8f6c\u6362\u4e3a\u5143\u7ec4\u5217\u8868\uff0c\u65b9\u4fbf\u904d\u5386\u67e5\u627e\u7279\u5b9a\u7684\u503c\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n<p><p>\u904d\u5386\u5b57\u5178\u4e2d\u7684\u6240\u6709\u952e\u503c\u5bf9\uff0c\u67e5\u627e\u7279\u5b9a\u7684\u503c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">for key, value in my_dict.items():<\/p>\n<p>    if value == &#39;Alice&#39;:<\/p>\n<p>        print(f&#39;Found key for value &quot;Alice&quot;: {key}&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u67e5\u627e\u7279\u5b9a\u503c<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u904d\u5386\uff0c\u53ef\u4ee5\u627e\u5230\u5bf9\u5e94\u503c\u7684\u952e\u540d\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">search_value = &#39;New York&#39;<\/p>\n<p>for key, value in my_dict.items():<\/p>\n<p>    if value == search_value:<\/p>\n<p>        print(f&#39;Found key for value &quot;{search_value}&quot;: {key}&#39;)<\/p>\n<p>        break<\/p>\n<p>else:<\/p>\n<p>    print(f&#39;Value &quot;{search_value}&quot; not found&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u4f7f\u7528\u5b57\u5178\u63a8\u5bfc\u5f0f<\/h3>\n<\/p>\n<p><p>\u5b57\u5178\u63a8\u5bfc\u5f0f\u53ef\u4ee5\u521b\u5efa\u65b0\u7684\u5b57\u5178\u6216\u67e5\u627e\u7279\u5b9a\u6761\u4ef6\u7684\u952e\u503c\u5bf9\uff0c\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><h4>1. \u521b\u5efa\u65b0\u5b57\u5178<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u5b57\u5178\u63a8\u5bfc\u5f0f\uff0c\u53ef\u4ee5\u6839\u636e\u5df2\u6709\u5b57\u5178\u521b\u5efa\u65b0\u7684\u5b57\u5178\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">new_dict = {k: v for k, v in my_dict.items() if v != &#39;New York&#39;}<\/p>\n<p>print(new_dict)  # \u8f93\u51fa\uff1a{&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 25}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u67e5\u627e\u7279\u5b9a\u6761\u4ef6<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528\u5b57\u5178\u63a8\u5bfc\u5f0f\u67e5\u627e\u7b26\u5408\u7279\u5b9a\u6761\u4ef6\u7684\u952e\u503c\u5bf9\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">search_value = &#39;Alice&#39;<\/p>\n<p>found_keys = [k for k, v in my_dict.items() if v == search_value]<\/p>\n<p>print(found_keys)  # \u8f93\u51fa\uff1a[&#39;name&#39;]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516d\u3001\u7ed3\u5408\u5f02\u5e38\u5904\u7406<\/h3>\n<\/p>\n<p><p>\u7ed3\u5408try-except\u7ed3\u6784\uff0c\u53ef\u4ee5\u5904\u7406\u952e\u4e0d\u5b58\u5728\u65f6\u7684\u5f02\u5e38\u60c5\u51b5\uff0c\u786e\u4fdd\u7a0b\u5e8f\u5065\u58ee\u6027\u3002<\/p>\n<\/p>\n<p><h4>1. \u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528try-except\u7ed3\u6784\u5904\u7406KeyError\u5f02\u5e38\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">try:<\/p>\n<p>    value = my_dict[&#39;gender&#39;]<\/p>\n<p>except KeyError:<\/p>\n<p>    value = &#39;Not specified&#39;<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1aNot specified<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u7ed3\u5408get()\u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>\u7ed3\u5408get()\u65b9\u6cd5\u548c\u5f02\u5e38\u5904\u7406\uff0c\u63d0\u4f9b\u66f4\u7075\u6d3b\u7684\u67e5\u627e\u65b9\u5f0f\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">value = my_dict.get(&#39;gender&#39;, &#39;Not specified&#39;)<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1aNot specified<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e03\u3001\u5b9e\u7528\u6280\u5de7\u548c\u6700\u4f73\u5b9e\u8df5<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u7ed3\u5408\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u53ef\u8bfb\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5b9e\u7528\u6280\u5de7\u548c\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<\/p>\n<p><h4>1. \u4f18\u5148\u4f7f\u7528get()\u65b9\u6cd5<\/h4>\n<\/p>\n<p><p>\u4f18\u5148\u4f7f\u7528get()\u65b9\u6cd5\u907f\u514dKeyError\u5f02\u5e38\uff0c\u63d0\u9ad8\u4ee3\u7801\u5065\u58ee\u6027\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">value = my_dict.get(&#39;age&#39;, 0)<\/p>\n<p>print(value)  # \u8f93\u51fa\uff1a25<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u4f7f\u7528defaultdict<\/h4>\n<\/p>\n<p><p>defaultdict\u662fcollections\u6a21\u5757\u4e2d\u7684\u4e00\u79cd\u5b57\u5178\u7c7b\u578b\uff0c\u63d0\u4f9b\u9ed8\u8ba4\u503c\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9891\u7e41\u67e5\u627e\u548c\u66f4\u65b0\u5b57\u5178\u7684\u573a\u666f\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from collections import defaultdict<\/p>\n<p>my_dict = defaultdict(lambda: &#39;Not specified&#39;)<\/p>\n<p>my_dict[&#39;name&#39;] = &#39;Alice&#39;<\/p>\n<p>print(my_dict[&#39;name&#39;])  # \u8f93\u51fa\uff1aAlice<\/p>\n<p>print(my_dict[&#39;gender&#39;])  # \u8f93\u51fa\uff1aNot specified<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3. \u5b57\u5178\u5408\u5e76<\/h4>\n<\/p>\n<p><p>\u5728Python 3.9\u53ca\u4ee5\u4e0a\u7248\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u5178\u5408\u5e76\u8fd0\u7b97\u7b26<code>|<\/code>\u8fdb\u884c\u5b57\u5178\u5408\u5e76\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">dict1 = {&#39;name&#39;: &#39;Alice&#39;}<\/p>\n<p>dict2 = {&#39;age&#39;: 25}<\/p>\n<p>merged_dict = dict1 | dict2<\/p>\n<p>print(merged_dict)  # \u8f93\u51fa\uff1a{&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 25}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u516b\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u952e\u8bbf\u95ee\u3001get()\u65b9\u6cd5\u548citems()\u65b9\u6cd5\u904d\u5386\u7b49\u3002\u4e0d\u540c\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u540c\u573a\u666f\uff0c\u7ed3\u5408\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u53ef\u8bfb\u6027\u3002\u901a\u8fc7\u952e\u8bbf\u95ee\u53ef\u4ee5\u76f4\u63a5\u83b7\u53d6\u503c\uff0c\u4f46\u9700\u8981\u786e\u4fdd\u952e\u5b58\u5728\uff1b\u4f7f\u7528get()\u65b9\u6cd5\u53ef\u4ee5\u907f\u514dKeyError\u5f02\u5e38\uff0c\u5e76\u63d0\u4f9b\u9ed8\u8ba4\u503c\uff1b\u901a\u8fc7items()\u65b9\u6cd5\u904d\u5386\u53ef\u4ee5\u5904\u7406\u590d\u6742\u7684\u67e5\u627e\u9700\u6c42\u3002\u6b64\u5916\uff0c\u7ed3\u5408\u5b57\u5178\u63a8\u5bfc\u5f0f\u3001\u5f02\u5e38\u5904\u7406\u548cdefaultdict\u7b49\u6280\u5de7\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u4f18\u5316\u5b57\u5178\u64cd\u4f5c\uff0c\u63d0\u9ad8\u4ee3\u7801\u6548\u7387\u548c\u5065\u58ee\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u5b57\u5178\u4e2d\u67e5\u627e\u7279\u5b9a\u7684\u503c\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528<code>in<\/code>\u5173\u952e\u5b57\u6765\u68c0\u67e5\u67d0\u4e2a\u952e\u662f\u5426\u5b58\u5728\uff0c\u6216\u8005\u4f7f\u7528\u5b57\u5178\u7684<code>values()<\/code>\u65b9\u6cd5\u6765\u904d\u5386\u6240\u6709\u503c\u3002\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6216\u7b80\u5355\u7684\u5faa\u73af\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff0c<code>if value in my_dict.values():<\/code>\u53ef\u4ee5\u5224\u65ad\u67d0\u4e2a\u503c\u662f\u5426\u5728\u5b57\u5178\u4e2d\u3002<\/p>\n<p><strong>\u5728Python\u5b57\u5178\u4e2d\u67e5\u627e\u503c\u7684\u6548\u7387\u5982\u4f55\uff1f<\/strong><br \/>\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c\u901a\u5e38\u662f\u9ad8\u6548\u7684\uff0c\u56e0\u4e3a\u5b57\u5178\u662f\u57fa\u4e8e\u54c8\u5e0c\u8868\u5b9e\u73b0\u7684\u3002\u4e0d\u8fc7\uff0c\u5982\u679c\u9700\u8981\u67e5\u627e\u7684\u503c\u4e0d\u5bf9\u5e94\u4e8e\u952e\uff0c\u53ef\u80fd\u9700\u8981\u904d\u5386\u6574\u4e2a\u5b57\u5178\uff0c\u8fd9\u5728\u6570\u636e\u91cf\u8f83\u5927\u7684\u60c5\u51b5\u4e0b\u6548\u7387\u4f1a\u964d\u4f4e\u3002\u56e0\u6b64\uff0c\u5efa\u8bae\u5728\u5b57\u5178\u4e2d\u5c3d\u91cf\u4f7f\u7528\u952e\u6765\u8fdb\u884c\u67e5\u627e\u3002<\/p>\n<p><strong>\u5982\u4f55\u901a\u8fc7\u952e\u83b7\u53d6\u5b57\u5178\u4e2d\u7684\u503c\uff1f<\/strong><br \/>\u8981\u901a\u8fc7\u952e\u83b7\u53d6\u5b57\u5178\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u4e2d\u62ec\u53f7<code>[]<\/code>\u6216<code>get()<\/code>\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>my_dict[&#39;key&#39;]<\/code>\u53ef\u4ee5\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\uff0c\u800c<code>my_dict.get(&#39;key&#39;)<\/code>\u5219\u5728\u952e\u4e0d\u5b58\u5728\u65f6\u8fd4\u56de<code>None<\/code>\uff0c\u9632\u6b62\u629b\u51fa\u9519\u8bef\u3002\u4f7f\u7528<code>get()<\/code>\u65b9\u6cd5\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u4f8b\u5982<code>my_dict.get(&#39;key&#39;, default_value)<\/code>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4e00\u3001\u76f4\u63a5\u56de\u7b54 \u8981\u5728Python\u4e2d\u67e5\u627e\u5b57\u5178\u4e2d\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u952e\u8bbf\u95ee\u3001get()\u65b9\u6cd5\u3001items()\u65b9\u6cd5\u904d\u5386\u3002\u5176\u4e2d\uff0c [&hellip;]","protected":false},"author":3,"featured_media":1081194,"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\/1081187"}],"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=1081187"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1081187\/revisions"}],"predecessor-version":[{"id":1081195,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1081187\/revisions\/1081195"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1081194"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1081187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1081187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1081187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}