{"id":1020499,"date":"2024-12-27T13:12:40","date_gmt":"2024-12-27T05:12:40","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1020499.html"},"modified":"2024-12-27T13:12:42","modified_gmt":"2024-12-27T05:12:42","slug":"%e5%88%97%e8%a1%a8%e5%a6%82%e4%bd%95%e5%8e%bb%e9%87%8d-python","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1020499.html","title":{"rendered":"\u5217\u8868\u5982\u4f55\u53bb\u91cd python"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25162844\/a7648b8b-de6b-47bb-944b-efc60414da4a.webp\" alt=\"\u5217\u8868\u5982\u4f55\u53bb\u91cd python\" \/><\/p>\n<p><p> \u5728Python\u4e2d\uff0c\u53bb\u9664\u5217\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5e38\u89c1\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u96c6\u5408\uff08set\uff09\u3001\u5b57\u5178\uff08dict\uff09\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u3001Pandas\u5e93\u7b49\u3002<strong>\u4f7f\u7528\u96c6\u5408\u3001\u4f7f\u7528\u5b57\u5178\u3001\u4f7f\u7528Pandas\u5e93\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/strong>\u7b49\u65b9\u6cd5\u90fd\u80fd\u6709\u6548\u5730\u53bb\u9664\u5217\u8868\u4e2d\u7684\u91cd\u590d\u9879\u3002\u4e0b\u9762\u6211\u5c06\u8be6\u7ec6\u63cf\u8ff0\u5982\u4f55\u4f7f\u7528\u96c6\u5408\u6765\u53bb\u91cd\u3002<\/p>\n<\/p>\n<p><p><strong>\u4f7f\u7528\u96c6\u5408\u53bb\u91cd<\/strong>\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u56e0\u4e3a\u96c6\u5408\u662f\u4e00\u79cd\u65e0\u5e8f\u4e14\u4e0d\u5141\u8bb8\u91cd\u590d\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u96c6\u5408\uff0c\u518d\u5c06\u96c6\u5408\u8f6c\u6362\u56de\u5217\u8868\u7684\u65b9\u5f0f\u6765\u53bb\u91cd\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u79cd\u65b9\u6cd5\u4f1a\u6539\u53d8\u5143\u7d20\u7684\u987a\u5e8f\uff0c\u56e0\u4e3a\u96c6\u5408\u662f\u65e0\u5e8f\u7684\u3002\u5982\u679c\u987a\u5e8f\u4e0d\u91cd\u8981\uff0c\u8fd9\u662f\u4e00\u4e2a\u5f88\u6709\u6548\u7684\u65b9\u6cd5\u3002\u5177\u4f53\u5b9e\u73b0\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = list(set(original_list))<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u4ee3\u7801\u7b80\u6d01\uff0c\u4e14\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u975e\u5e38\u9ad8\u6548\u3002\u4f46\u7f3a\u70b9\u5728\u4e8e\u65e0\u6cd5\u4fdd\u6301\u539f\u6709\u7684\u987a\u5e8f\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528\u96c6\u5408\u53bb\u91cd<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u96c6\u5408\u53bb\u91cd\u662f\u4e00\u79cd\u5feb\u6377\u4e14\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u96c6\u5408\u662fPython\u4e2d\u7684\u4e00\u79cd\u5185\u7f6e\u6570\u636e\u7ed3\u6784\uff0c\u5177\u5907\u65e0\u5e8f\u6027\u548c\u5143\u7d20\u552f\u4e00\u6027\u7684\u7279\u70b9\uff0c\u8fd9\u4f7f\u5f97\u5b83\u5728\u53bb\u91cd\u64cd\u4f5c\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u57fa\u672c\u7528\u6cd5<\/strong><\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u96c6\u5408\u6765\u53bb\u9664\u91cd\u590d\u5143\u7d20\uff0c\u56e0\u4e3a\u96c6\u5408\u81ea\u52a8\u53bb\u9664\u91cd\u590d\u503c\u3002\u7136\u540e\uff0c\u53ef\u4ee5\u5c06\u96c6\u5408\u8f6c\u6362\u56de\u5217\u8868\u4ee5\u83b7\u5f97\u4e0d\u91cd\u590d\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = list(set(original_list))<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c<code>set(original_list)<\/code> \u5c06\u5217\u8868\u8f6c\u5316\u4e3a\u96c6\u5408\uff0c\u81ea\u52a8\u53bb\u9664\u91cd\u590d\u5143\u7d20\uff0c\u800c <code>list(...)<\/code> \u518d\u6b21\u5c06\u96c6\u5408\u8f6c\u5316\u4e3a\u5217\u8868\u3002<\/p>\n<\/p>\n<p><p><strong>2. \u4fdd\u6301\u987a\u5e8f\u7684\u53bb\u91cd\u65b9\u6cd5<\/strong><\/p>\n<\/p>\n<p><p>\u5982\u679c\u9700\u8981\u53bb\u91cd\u540c\u65f6\u4fdd\u6301\u5217\u8868\u7684\u539f\u6709\u987a\u5e8f\uff0c\u53ef\u4ee5\u7ed3\u5408\u96c6\u5408\u548c\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u5b9e\u73b0\u3002\u901a\u8fc7\u5728\u904d\u5386\u65f6\u4f7f\u7528\u96c6\u5408\u6765\u8bb0\u5f55\u5df2\u51fa\u73b0\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u786e\u4fdd\u6bcf\u4e2a\u5143\u7d20\u53ea\u6dfb\u52a0\u4e00\u6b21\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = []<\/p>\n<p>seen = set()<\/p>\n<p>for item in original_list:<\/p>\n<p>    if item not in seen:<\/p>\n<p>        unique_list.append(item)<\/p>\n<p>        seen.add(item)<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u6b64\u65b9\u6cd5\u4e0d\u4ec5\u53bb\u9664\u4e86\u91cd\u590d\u5143\u7d20\uff0c\u8fd8\u4fdd\u6301\u4e86\u539f\u6709\u5143\u7d20\u7684\u987a\u5e8f\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528\u5b57\u5178\u53bb\u91cd<\/h3>\n<\/p>\n<p><p>Python 3.7\u53ca\u4ee5\u4e0a\u7248\u672c\u4e2d\uff0c\u5b57\u5178\u4fdd\u6301\u63d2\u5165\u987a\u5e8f\u4e0d\u53d8\u3002\u8fd9\u4e00\u7279\u6027\u53ef\u4ee5\u7528\u6765\u53bb\u91cd\u5e76\u4fdd\u6301\u987a\u5e8f\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u57fa\u672c\u7528\u6cd5<\/strong><\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u5c06\u5217\u8868\u4e2d\u7684\u5143\u7d20\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\uff0c\u53ef\u4ee5\u53bb\u9664\u91cd\u590d\u5143\u7d20\uff0c\u56e0\u4e3a\u5b57\u5178\u7684\u952e\u662f\u552f\u4e00\u7684\u3002\u7136\u540e\uff0c\u901a\u8fc7\u5b57\u5178\u7684\u952e\u6765\u6784\u5efa\u53bb\u91cd\u540e\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = list(dict.fromkeys(original_list))<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>dict.fromkeys(original_list)<\/code> \u521b\u5efa\u4e86\u4e00\u4e2a\u952e\u4e3a\u5217\u8868\u5143\u7d20\u7684\u5b57\u5178\uff0c\u968f\u540e <code>list(...)<\/code> \u5c06\u5176\u952e\u8f6c\u5316\u4e3a\u5217\u8868\uff0c\u5b8c\u6210\u53bb\u91cd\u5e76\u4fdd\u6301\u987a\u5e8f\u3002<\/p>\n<\/p>\n<p><p><strong>2. \u4f7f\u7528OrderedDict<\/strong><\/p>\n<\/p>\n<p><p>\u5728Python 3.6\u53ca\u66f4\u65e9\u7248\u672c\u4e2d\uff0c<code>OrderedDict<\/code> \u53ef\u4ee5\u7528\u6765\u53bb\u91cd\u5e76\u4fdd\u6301\u987a\u5e8f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from collections import OrderedDict<\/p>\n<p>original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = list(OrderedDict.fromkeys(original_list))<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>OrderedDict<\/code> \u662f\u4e00\u4e2a\u5b57\u5178\u7684\u5b50\u7c7b\uff0c\u4fdd\u7559\u4e86\u5143\u7d20\u7684\u63d2\u5165\u987a\u5e8f\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528Pandas\u5e93\u53bb\u91cd<\/h3>\n<\/p>\n<p><p>Pandas\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5206\u6790\u5e93\uff0c\u63d0\u4f9b\u4e86\u8bb8\u591a\u4fbf\u6377\u7684\u6570\u636e\u64cd\u4f5c\u65b9\u6cd5\u3002\u867d\u7136\u5b83\u4e3b\u8981\u7528\u4e8e\u6570\u636e\u5206\u6790\u548c\u5904\u7406\uff0c\u4f46\u5176\u53bb\u91cd\u529f\u80fd\u540c\u6837\u53ef\u4ee5\u5e94\u7528\u4e8e\u666e\u901a\u7684Python\u5217\u8868\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u4f7f\u7528Pandas\u53bb\u91cd<\/strong><\/p>\n<\/p>\n<p><p>Pandas\u7684<code>Series<\/code>\u5bf9\u8c61\u63d0\u4f9b\u4e86<code>unique()<\/code>\u65b9\u6cd5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u53bb\u9664\u91cd\u590d\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = pd.Series(original_list).unique().tolist()<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u91cc\uff0c<code>pd.Series(original_list).unique()<\/code> \u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u552f\u4e00\u503c\u7684\u6570\u7ec4\uff0c<code>tolist()<\/code> \u5c06\u5176\u8f6c\u5316\u4e3a\u5217\u8868\u3002<\/p>\n<\/p>\n<p><p><strong>2. Pandas\u7684\u4f18\u70b9<\/strong><\/p>\n<\/p>\n<p><p>\u4f7f\u7528Pandas\u53bb\u91cd\u7684\u4f18\u70b9\u5728\u4e8e\u5176\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u80fd\u529b\uff0c\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u8fdb\u884c\u66f4\u591a\u7684\u64cd\u4f5c\uff0c\u5982\u6570\u636e\u8fc7\u6ee4\u3001\u6392\u5e8f\u7b49\u3002\u540c\u65f6\uff0cPandas\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\u6027\u80fd\u8f83\u597d\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u53bb\u91cd<\/h3>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u6784\u5efa\u5217\u8868\uff0c\u5e76\u53ef\u4ee5\u7ed3\u5408\u6761\u4ef6\u5224\u65ad\u6765\u53bb\u91cd\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u5217\u8868\u63a8\u5bfc\u5f0f\u53bb\u91cd<\/strong><\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u6761\u4ef6\u5224\u65ad\u548c\u96c6\u5408\u8bb0\u5f55\u5df2\u51fa\u73b0\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u5b9e\u73b0\u53bb\u91cd\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>seen = set()<\/p>\n<p>unique_list = [x for x in original_list if not (x in seen or seen.add(x))]<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>x in seen or seen.add(x)<\/code> \u8fd9\u4e2a\u6761\u4ef6\u5224\u65ad\u5728\u68c0\u67e5\u5143\u7d20\u662f\u5426\u5df2\u7ecf\u51fa\u73b0\u5728\u96c6\u5408\u4e2d\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u5219\u6dfb\u52a0\u5230\u96c6\u5408\u4e2d\uff0c\u5e76\u4e14\u6dfb\u52a0\u5230\u6700\u7ec8\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n<p><p><strong>2. \u4f18\u7f3a\u70b9<\/strong><\/p>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u53bb\u91cd\u7684\u4f18\u52bf\u5728\u4e8e\u4ee3\u7801\u7b80\u6d01\u4e14\u76f4\u89c2\uff0c\u4f46\u5bf9\u4e8e\u4e0d\u719f\u6089Python\u7684\u4eba\u6765\u8bf4\u53ef\u80fd\u4e0d\u5bb9\u6613\u7406\u89e3\u3002\u540c\u65f6\uff0c\u7531\u4e8e\u9700\u8981\u68c0\u67e5\u96c6\u5408\u4e2d\u662f\u5426\u5df2\u7ecf\u5b58\u5728\u5143\u7d20\uff0c\u6027\u80fd\u4e0a\u53ef\u80fd\u4e0d\u5982\u96c6\u5408\u548c\u5b57\u5178\u76f4\u63a5\u53bb\u91cd\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u5176\u4ed6\u53bb\u91cd\u7b56\u7565<\/h3>\n<\/p>\n<p><p>\u9664\u4e86\u4e0a\u8ff0\u5e38\u7528\u65b9\u6cd5\uff0c\u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u65b9\u6cd5\u548c\u7b56\u7565\u53ef\u4ee5\u7528\u4e8e\u53bb\u91cd\uff0c\u5177\u4f53\u9009\u62e9\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u548c\u6570\u636e\u7279\u6027\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u4f7f\u7528Numpy<\/strong><\/p>\n<\/p>\n<p><p>Numpy\u662f\u53e6\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u4e5f\u63d0\u4f9b\u4e86\u53bb\u91cd\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = np.unique(original_list).tolist()<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>np.unique()<\/code> \u8fd4\u56de\u6392\u5e8f\u540e\u7684\u552f\u4e00\u503c\u3002<\/p>\n<\/p>\n<p><p><strong>2. \u81ea\u5b9a\u4e49\u53bb\u91cd\u51fd\u6570<\/strong><\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u81ea\u5b9a\u4e49\u53bb\u91cd\u903b\u8f91\uff0c\u6bd4\u5982\u6839\u636e\u67d0\u4e2a\u5c5e\u6027\u53bb\u91cd\u3002\u8fd9\u65f6\u53ef\u4ee5\u7f16\u5199\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def custom_unique(seq, key=None):<\/p>\n<p>    seen = set()<\/p>\n<p>    result = []<\/p>\n<p>    for item in seq:<\/p>\n<p>        val = item if key is None else key(item)<\/p>\n<p>        if val not in seen:<\/p>\n<p>            seen.add(val)<\/p>\n<p>            result.append(item)<\/p>\n<p>    return result<\/p>\n<p>original_list = [1, 2, 2, 3, 4, 4, 5]<\/p>\n<p>unique_list = custom_unique(original_list)<\/p>\n<p>print(unique_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e0a\u8ff0\u51fd\u6570\u53ef\u4ee5\u6839\u636e\u4f20\u5165\u7684<code>key<\/code>\u51fd\u6570\u6765\u53bb\u91cd\uff0c\u9002\u7528\u4e8e\u66f4\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u53bb\u91cd\u65b9\u6cd5\u7684\u6027\u80fd\u5bf9\u6bd4<\/h3>\n<\/p>\n<p><p>\u4e0d\u540c\u7684\u53bb\u91cd\u65b9\u6cd5\u5728\u6027\u80fd\u4e0a\u6709\u6240\u4e0d\u540c\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u9700\u8981\u8003\u8651\u6570\u636e\u91cf\u548c\u5bf9\u987a\u5e8f\u7684\u8981\u6c42\u3002<\/p>\n<\/p>\n<p><p><strong>1. \u65f6\u95f4\u590d\u6742\u5ea6\u5206\u6790<\/strong><\/p>\n<\/p>\n<ul>\n<li><strong>\u96c6\u5408\u53bb\u91cd<\/strong>\uff1a\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u4f46\u4e0d\u4fdd\u7559\u987a\u5e8f\u3002<\/li>\n<li><strong>\u5b57\u5178\u53bb\u91cd<\/strong>\uff1a\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u4fdd\u7559\u987a\u5e8f\u3002<\/li>\n<li><strong>Pandas\u53bb\u91cd<\/strong>\uff1a\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u9002\u7528\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u3002<\/li>\n<li><strong>\u5217\u8868\u63a8\u5bfc\u5f0f\u53bb\u91cd<\/strong>\uff1a\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u4fdd\u7559\u987a\u5e8f\uff0c\u4f46\u5b9e\u73b0\u8f83\u590d\u6742\u3002<\/li>\n<\/ul>\n<p><p><strong>2. \u6027\u80fd\u6d4b\u8bd5<\/strong><\/p>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5927\u89c4\u6a21\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>timeit<\/code>\u6a21\u5757\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5\uff0c\u9009\u62e9\u6700\u9002\u5408\u7684\u53bb\u91cd\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import timeit<\/p>\n<p>original_list = list(range(10000)) * 10<\/p>\n<h2><strong>Test different methods<\/strong><\/h2>\n<p>print(timeit.timeit(lambda: list(set(original_list)), number=1000))<\/p>\n<p>print(timeit.timeit(lambda: list(dict.fromkeys(original_list)), number=1000))<\/p>\n<p>print(timeit.timeit(lambda: pd.Series(original_list).unique().tolist(), number=1000))<\/p>\n<p>print(timeit.timeit(lambda: [x for x in original_list if not (x in seen or seen.add(x))], number=1000))<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u5b9e\u9645\u6d4b\u8bd5\u53ef\u4ee5\u53d1\u73b0\uff0c\u5728\u4e0d\u540c\u573a\u666f\u4e0b\uff0c\u5404\u79cd\u65b9\u6cd5\u7684\u6027\u80fd\u5dee\u5f02\u3002<\/p>\n<\/p>\n<p><h3>\u4e03\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u53bb\u91cd\u662f\u6570\u636e\u5904\u7406\u4e2d\u7684\u5e38\u89c1\u64cd\u4f5c\uff0c\u5728Python\u4e2d\u6709\u591a\u79cd\u5b9e\u73b0\u65b9\u6cd5\u3002\u9009\u62e9\u5408\u9002\u7684\u53bb\u91cd\u65b9\u6cd5\u5e94\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u6570\u636e\u7279\u6027\u3002<strong>\u96c6\u5408\u548c\u5b57\u5178\u65b9\u6cd5\u7b80\u5355\u9ad8\u6548\uff0c\u9002\u5408\u5927\u591a\u6570\u60c5\u51b5\uff1bPandas\u548cNumpy\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u80fd\u529b\uff0c\u9002\u5408\u5927\u89c4\u6a21\u6570\u636e\uff1b\u81ea\u5b9a\u4e49\u51fd\u6570\u548c\u5217\u8868\u63a8\u5bfc\u5f0f\u5219\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7075\u6d3b\u6027\u3002<\/strong><\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u6709\u6548\u53bb\u91cd\u5217\u8868\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u53bb\u91cd\u5217\u8868\u3002\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u4f7f\u7528\u96c6\u5408\uff08set\uff09\uff0c\u5b83\u4f1a\u81ea\u52a8\u53bb\u9664\u91cd\u590d\u5143\u7d20\u3002\u4f60\u53ef\u4ee5\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u96c6\u5408\uff0c\u7136\u540e\u518d\u8f6c\u6362\u56de\u5217\u8868\uff0c\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a  <\/p>\n<pre><code class=\"language-python\">my_list = [1, 2, 2, 3, 4, 4]\nunique_list = list(set(my_list))\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u9ad8\u6548\uff0c\u4f46\u4f1a\u4e22\u5931\u539f\u59cb\u5217\u8868\u7684\u987a\u5e8f\u3002\u5982\u679c\u4fdd\u6301\u987a\u5e8f\u5f88\u91cd\u8981\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u548c\u96c6\u5408\u7ed3\u5408\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre><code class=\"language-python\">unique_list = []\n[unique_list.append(x) for x in my_list if x not in unique_list]\n<\/code><\/pre>\n<p><strong>\u5728\u53bb\u91cd\u5217\u8868\u65f6\u5982\u4f55\u4fdd\u6301\u5143\u7d20\u7684\u987a\u5e8f\uff1f<\/strong><br \/>\u5982\u679c\u4f60\u5e0c\u671b\u5728\u53bb\u91cd\u7684\u540c\u65f6\u4fdd\u7559\u5143\u7d20\u7684\u539f\u59cb\u987a\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>dict.fromkeys()<\/code> \u65b9\u6cd5\u3002\u8fd9\u4e2a\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\uff0c\u5176\u952e\u662f\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u503c\u662fNone\u3002\u7531\u4e8e\u5b57\u5178\u7684\u952e\u662f\u552f\u4e00\u7684\uff0c\u8fd9\u6837\u53ef\u4ee5\u6709\u6548\u53bb\u91cd\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-python\">my_list = [1, 2, 2, 3, 4, 4]\nunique_list = list(dict.fromkeys(my_list))\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u53bb\u91cd\uff0c\u8fd8\u80fd\u4fdd\u6301\u539f\u59cb\u987a\u5e8f\u3002<\/p>\n<p><strong>\u4f7f\u7528numpy\u5e93\u53bb\u91cd\u5217\u8868\u6709\u4ec0\u4e48\u4f18\u52bf\uff1f<\/strong><br \/>\u5982\u679c\u4f60\u7684\u6570\u636e\u5904\u7406\u6d89\u53ca\u5927\u91cf\u6570\u503c\u578b\u6570\u636e\uff0c\u4f7f\u7528 <code>numpy<\/code> \u5e93\u4f1a\u975e\u5e38\u9ad8\u6548\u3002<code>numpy<\/code> \u63d0\u4f9b\u4e86 <code>np.unique()<\/code> \u51fd\u6570\uff0c\u53ef\u4ee5\u5feb\u901f\u53bb\u9664\u91cd\u590d\u5143\u7d20\u5e76\u8fd4\u56de\u6392\u5e8f\u540e\u7684\u7ed3\u679c\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-python\">import numpy as np\nmy_list = [1, 2, 2, 3, 4, 4]\nunique_array = np.unique(my_list)\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\u8868\u73b0\u5c24\u4e3a\u51fa\u8272\uff0c\u5e76\u4e14\u53ef\u4ee5\u76f4\u63a5\u5904\u7406\u591a\u7ef4\u6570\u7ec4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53bb\u9664\u5217\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5e38\u89c1\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u96c6\u5408\uff08set\uff09\u3001\u5b57\u5178\uff08dict\uff09\u3001\u5217\u8868\u63a8 [&hellip;]","protected":false},"author":3,"featured_media":1020507,"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\/1020499"}],"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=1020499"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1020499\/revisions"}],"predecessor-version":[{"id":1020508,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1020499\/revisions\/1020508"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1020507"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1020499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1020499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1020499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}