{"id":1010317,"date":"2024-12-27T11:19:56","date_gmt":"2024-12-27T03:19:56","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1010317.html"},"modified":"2024-12-27T11:19:58","modified_gmt":"2024-12-27T03:19:58","slug":"python%e5%a6%82%e4%bd%95%e8%be%93%e5%87%ba%e5%af%b9%e5%ba%94%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1010317.html","title":{"rendered":"python\u5982\u4f55\u8f93\u51fa\u5bf9\u5e94\u5143\u7d20"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25084909\/f85c7d63-c524-4379-9520-a8b493587359.webp\" alt=\"python\u5982\u4f55\u8f93\u51fa\u5bf9\u5e94\u5143\u7d20\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u8f93\u51fa\u5bf9\u5e94\u5143\u7d20\u7684\u5e38\u89c1\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u5217\u8868\u7d22\u5f15\u3001\u4f7f\u7528\u5b57\u5178\u952e\u503c\u5bf9\u3001\u4f7f\u7528\u5faa\u73af\u904d\u5386\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3002<\/strong>\u5176\u4e2d\uff0c\u901a\u8fc7\u5217\u8868\u7d22\u5f15\u8bbf\u95ee\u662f\u6700\u76f4\u63a5\u7684\u65b9\u5f0f\u4e4b\u4e00\uff0c\u9002\u7528\u4e8e\u9700\u8981\u8bbf\u95ee\u5e8f\u5217\u4e2d\u5df2\u77e5\u4f4d\u7f6e\u7684\u5143\u7d20\u3002\u5217\u8868\u662f\u6709\u5e8f\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8f7b\u677e\u5730\u8bbf\u95ee\u5176\u4e2d\u7684\u5143\u7d20\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5217\u8868\u7d22\u5f15\u8bbf\u95ee\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u5217\u8868\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u5b58\u50a8\u591a\u4e2a\u5143\u7d20\u3002\u8fd9\u4e9b\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u548c\u64cd\u4f5c\u3002\u7d22\u5f15\u662f\u4ece0\u5f00\u59cb\u7684\u6574\u6570\uff0c\u8868\u793a\u5143\u7d20\u5728\u5217\u8868\u4e2d\u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u8981\u8bbf\u95ee\u5217\u8868\u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f150\u3002\u5728\u4f7f\u7528\u5217\u8868\u7d22\u5f15\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<\/p>\n<ol>\n<li>\n<p><strong>\u7d22\u5f15\u4ece0\u5f00\u59cb<\/strong>\uff1a\u8fd9\u610f\u5473\u7740\u5217\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u7d22\u5f15\u662f0\uff0c\u800c\u4e0d\u662f1\u3002\u5982\u679c\u5c1d\u8bd5\u4f7f\u7528\u5927\u4e8e\u6216\u7b49\u4e8e\u5217\u8868\u957f\u5ea6\u7684\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\uff0c\u5c06\u4f1a\u5f15\u53d1IndexError\u5f02\u5e38\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u8d1f\u6570\u7d22\u5f15<\/strong>\uff1aPython\u5141\u8bb8\u4f7f\u7528\u8d1f\u6570\u7d22\u5f15\u8bbf\u95ee\u5217\u8868\u5143\u7d20\u3002\u8d1f\u6570\u7d22\u5f15\u4ece\u5217\u8868\u672b\u5c3e\u5f00\u59cb\u8ba1\u6570\uff0c-1\u8868\u793a\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c-2\u8868\u793a\u5012\u6570\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u5207\u7247\u64cd\u4f5c<\/strong>\uff1a\u9664\u4e86\u5355\u4e2a\u5143\u7d20\u8bbf\u95ee\u5916\uff0c\u5217\u8868\u8fd8\u652f\u6301\u5207\u7247\u64cd\u4f5c\u3002\u5207\u7247\u5141\u8bb8\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u800c\u4e0d\u662f\u5355\u4e2a\u5143\u7d20\u3002\u5207\u7247\u8bed\u6cd5\u4e3a<code>list[start:stop:step]<\/code>\uff0c\u5176\u4e2d<code>start<\/code>\u662f\u5f00\u59cb\u7d22\u5f15\uff0c<code>stop<\/code>\u662f\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\uff0c<code>step<\/code>\u662f\u6b65\u957f\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n<p><p>\u901a\u8fc7\u4e86\u89e3\u8fd9\u4e9b\u57fa\u672c\u6982\u5ff5\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u4f7f\u7528\u5217\u8868\u7d22\u5f15\u6765\u8f93\u51fa\u5bf9\u5e94\u5143\u7d20\u3002\u63a5\u4e0b\u6765\uff0c\u5c06\u6df1\u5165\u63a2\u8ba8Python\u4e2d\u5176\u4ed6\u65b9\u6cd5\u5982\u4f55\u8f93\u51fa\u5bf9\u5e94\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528\u5217\u8868\u7d22\u5f15<\/p>\n<\/p>\n<p><p>\u5217\u8868\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u6570\u636e\u7ed3\u6784\u4e4b\u4e00\uff0c\u5b83\u662f\u4e00\u4e2a\u6709\u5e8f\u96c6\u5408\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h3>\u5217\u8868\u7684\u57fa\u672c\u64cd\u4f5c<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u5217\u8868\u4f7f\u7528\u65b9\u62ec\u53f7\u8868\u793a\uff0c\u5143\u7d20\u4e4b\u95f4\u7528\u9017\u53f7\u5206\u9694\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u5217\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">fruits = [&#39;apple&#39;, &#39;banana&#39;, &#39;cherry&#39;, &#39;date&#39;]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8981\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u3002\u4f8b\u5982\uff0c\u8981\u8bbf\u95ee\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f150\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(fruits[0])  # \u8f93\u51fa: apple<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8d1f\u6570\u7d22\u5f15<\/h3>\n<\/p>\n<p><p>Python\u5141\u8bb8\u4f7f\u7528\u8d1f\u6570\u7d22\u5f15\u6765\u8bbf\u95ee\u5217\u8868\u672b\u5c3e\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u8981\u8bbf\u95ee\u6700\u540e\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15-1\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(fruits[-1])  # \u8f93\u51fa: date<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u5207\u7247\u64cd\u4f5c<\/h3>\n<\/p>\n<p><p>\u5207\u7247\u64cd\u4f5c\u5141\u8bb8\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u800c\u4e0d\u662f\u5355\u4e2a\u5143\u7d20\u3002\u4ee5\u4e0b\u662f\u5207\u7247\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(fruits[1:3])  # \u8f93\u51fa: [&#39;banana&#39;, &#39;cherry&#39;]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5207\u7247\u64cd\u4f5c\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u539f\u5217\u8868\u4e2d\u4ece\u7d22\u5f151\u5230\u7d22\u5f153\uff08\u4e0d\u5305\u62ec\uff09\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528\u5b57\u5178\u952e\u503c\u5bf9<\/p>\n<\/p>\n<p><p>\u5b57\u5178\u662f\u4e00\u79cd\u65e0\u5e8f\u7684\u3001\u53ef\u53d8\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u952e\u503c\u5bf9\u3002\u5728\u5b57\u5178\u4e2d\uff0c\u6bcf\u4e2a\u952e\u5fc5\u987b\u662f\u552f\u4e00\u7684\uff0c\u800c\u503c\u53ef\u4ee5\u662f\u4efb\u610f\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/p>\n<p><h3>\u521b\u5efa\u5b57\u5178<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u5b57\u5178\u4f7f\u7528\u5927\u62ec\u53f7\u8868\u793a\uff0c\u952e\u503c\u5bf9\u4e4b\u95f4\u7528\u9017\u53f7\u5206\u9694\uff0c\u952e\u548c\u503c\u4e4b\u95f4\u7528\u5192\u53f7\u5206\u9694\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u5b57\u5178\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">person = {&#39;name&#39;: &#39;John&#39;, &#39;age&#39;: 30, &#39;city&#39;: &#39;New York&#39;}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8bbf\u95ee\u5b57\u5178\u5143\u7d20<\/h3>\n<\/p>\n<p><p>\u8981\u8bbf\u95ee\u5b57\u5178\u4e2d\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u952e\u3002\u4f8b\u5982\uff0c\u8981\u8bbf\u95ee\u5b57\u5178\u4e2d\u7684\u540d\u79f0\uff0c\u53ef\u4ee5\u4f7f\u7528\u952e&#39;name&#39;\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(person[&#39;name&#39;])  # \u8f93\u51fa: John<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4fee\u6539\u5b57\u5178\u5143\u7d20<\/h3>\n<\/p>\n<p><p>\u5b57\u5178\u662f\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u4fee\u6539\u5176\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e0b\u662f\u4fee\u6539\u5b57\u5178\u4e2d\u5143\u7d20\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">person[&#39;age&#39;] = 31<\/p>\n<p>print(person)  # \u8f93\u51fa: {&#39;name&#39;: &#39;John&#39;, &#39;age&#39;: 31, &#39;city&#39;: &#39;New York&#39;}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u4f7f\u7528\u5faa\u73af\u904d\u5386<\/p>\n<\/p>\n<p><p>\u5faa\u73af\u662fPython\u4e2d\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u7528\u4e8e\u904d\u5386\u5217\u8868\u3001\u5b57\u5178\u7b49\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<p><h3>\u904d\u5386\u5217\u8868<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u904d\u5386\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e0b\u662f\u904d\u5386\u5217\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">for fruit in fruits:<\/p>\n<p>    print(fruit)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u904d\u5386\u5b57\u5178<\/h3>\n<\/p>\n<p><p>\u904d\u5386\u5b57\u5178\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528items()\u65b9\u6cd5\u6765\u83b7\u53d6\u5b57\u5178\u4e2d\u7684\u952e\u503c\u5bf9\u3002\u4ee5\u4e0b\u662f\u904d\u5386\u5b57\u5178\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">for key, value in person.items():<\/p>\n<p>    print(key, value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u904d\u5386\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n<p><p>\u5b57\u7b26\u4e32\u4e5f\u662f\u4e00\u79cd\u5e8f\u5217\uff0c\u53ef\u4ee5\u50cf\u5217\u8868\u4e00\u6837\u4f7f\u7528for\u5faa\u73af\u8fdb\u884c\u904d\u5386\u3002\u4ee5\u4e0b\u662f\u904d\u5386\u5b57\u7b26\u4e32\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">word = &#39;hello&#39;<\/p>\n<p>for char in word:<\/p>\n<p>    print(char)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/p>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u8bed\u6cd5\uff0c\u7528\u4e8e\u521b\u5efa\u65b0\u7684\u5217\u8868\u3002\u5b83\u5141\u8bb8\u5728\u4e00\u884c\u4ee3\u7801\u4e2d\u5b8c\u6210\u5faa\u73af\u548c\u6761\u4ef6\u5224\u65ad\u3002<\/p>\n<\/p>\n<p><h3>\u57fa\u672c\u8bed\u6cd5<\/h3>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">new_list = [expression for item in iterable if condition]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u793a\u4f8b<\/h3>\n<\/p>\n<p><p>\u4ee5\u4e0b\u662f\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u751f\u6210\u4e00\u4e2a\u5305\u542b\u5076\u6570\u7684\u5217\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">numbers = [1, 2, 3, 4, 5, 6]<\/p>\n<p>even_numbers = [num for num in numbers if num % 2 == 0]<\/p>\n<p>print(even_numbers)  # \u8f93\u51fa: [2, 4, 6]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u5b57\u5178\u63a8\u5bfc\u5f0f<\/h3>\n<\/p>\n<p><p>\u7c7b\u4f3c\u4e8e\u5217\u8868\u63a8\u5bfc\u5f0f\uff0c\u5b57\u5178\u63a8\u5bfc\u5f0f\u7528\u4e8e\u521b\u5efa\u65b0\u7684\u5b57\u5178\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u5b57\u5178\u63a8\u5bfc\u5f0f\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">squares = {num: num2 for num in range(1, 6)}<\/p>\n<p>print(squares)  # \u8f93\u51fa: {1: 1, 2: 4, 3: 9, 4: 16, 5: 25}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e94\u3001\u4f7f\u7528\u51fd\u6570\u8f93\u51fa\u5143\u7d20<\/p>\n<\/p>\n<p><p>\u51fd\u6570\u662fPython\u4e2d\u7684\u4e00\u7b49\u516c\u6c11\uff0c\u53ef\u4ee5\u7528\u4e8e\u5c01\u88c5\u4ee3\u7801\u903b\u8f91\u3002<\/p>\n<\/p>\n<p><h3>\u5b9a\u4e49\u51fd\u6570<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u7b80\u5355\u7684\u51fd\u6570\u6765\u8f93\u51fa\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e0b\u662f\u5b9a\u4e49\u548c\u4f7f\u7528\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def print_elements(elements):<\/p>\n<p>    for element in elements:<\/p>\n<p>        print(element)<\/p>\n<p>print_elements(fruits)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4f7f\u7528lambda\u51fd\u6570<\/h3>\n<\/p>\n<p><p>lambda\u51fd\u6570\u662f\u4e00\u4e2a\u533f\u540d\u51fd\u6570\uff0c\u901a\u5e38\u7528\u4e8e\u9700\u8981\u4e00\u4e2a\u7b80\u5355\u51fd\u6570\u800c\u4e0d\u60f3\u547d\u540d\u65f6\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528lambda\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">squared_numbers = list(map(lambda x: x2, numbers))<\/p>\n<p>print(squared_numbers)  # \u8f93\u51fa: [1, 4, 9, 16, 25, 36]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570<\/h3>\n<\/p>\n<p><p>Python\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5176\u4ed6\u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def apply_function(elements, func):<\/p>\n<p>    return [func(element) for element in elements]<\/p>\n<p>print(apply_function(numbers, lambda x: x3))  # \u8f93\u51fa: [1, 8, 27, 64, 125, 216]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u516d\u3001\u4f7f\u7528NumPy\u5e93<\/p>\n<\/p>\n<p><p>NumPy\u662f\u4e00\u4e2a\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u4e3aPython\u63d0\u4f9b\u4e86\u652f\u6301\u5927\u6570\u636e\u96c6\u7684\u6570\u7ec4\u5bf9\u8c61\u3002<\/p>\n<\/p>\n<p><h3>\u5b89\u88c5NumPy<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528NumPy\u4e4b\u524d\uff0c\u9700\u8981\u786e\u4fdd\u5df2\u5b89\u88c5\u8be5\u5e93\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5NumPy\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install numpy<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u521b\u5efa\u6570\u7ec4<\/h3>\n<\/p>\n<p><p>NumPy\u63d0\u4f9b\u4e86\u4e00\u4e2andarray\u5bf9\u8c61\uff0c\u53ef\u4ee5\u7528\u4e8e\u5b58\u50a8\u591a\u7ef4\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u6570\u7ec4\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>array = np.array([1, 2, 3, 4, 5])<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e0b\u662f\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(array[0])  # \u8f93\u51fa: 1<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u6570\u7ec4\u5207\u7247<\/h3>\n<\/p>\n<p><p>\u4e0e\u5217\u8868\u7c7b\u4f3c\uff0cNumPy\u6570\u7ec4\u4e5f\u652f\u6301\u5207\u7247\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u6570\u7ec4\u5207\u7247\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(array[1:4])  # \u8f93\u51fa: [2 3 4]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e03\u3001\u4f7f\u7528Pandas\u5e93<\/p>\n<\/p>\n<p><p>Pandas\u662f\u4e00\u4e2a\u7528\u4e8e\u6570\u636e\u5206\u6790\u7684\u5e93\uff0c\u4e3aPython\u63d0\u4f9b\u4e86\u6570\u636e\u7ed3\u6784\u548c\u6570\u636e\u5206\u6790\u5de5\u5177\u3002<\/p>\n<\/p>\n<p><h3>\u5b89\u88c5Pandas<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5Pandas\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install pandas<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u521b\u5efaDataFrame<\/h3>\n<\/p>\n<p><p>DataFrame\u662fPandas\u4e2d\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u4e8c\u7ef4\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u521b\u5efaDataFrame\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>data = {&#39;Name&#39;: [&#39;Alice&#39;, &#39;Bob&#39;, &#39;Charlie&#39;], &#39;Age&#39;: [25, 30, 35]}<\/p>\n<p>df = pd.DataFrame(data)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8bbf\u95eeDataFrame\u5143\u7d20<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528iloc\u548cloc\u65b9\u6cd5\u8bbf\u95eeDataFrame\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e0b\u662f\u8bbf\u95eeDataFrame\u5143\u7d20\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">print(df.iloc[0])  # \u8f93\u51fa: Name    Alice, Age     25<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u8fc7\u6ee4DataFrame<\/h3>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528\u6761\u4ef6\u8868\u8fbe\u5f0f\u8fc7\u6ee4DataFrame\u3002\u4ee5\u4e0b\u662f\u8fc7\u6ee4DataFrame\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">filtered_df = df[df[&#39;Age&#39;] &gt; 30]<\/p>\n<p>print(filtered_df)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u5404\u79cd\u65b9\u6cd5\u548c\u5de5\u5177\uff0c\u53ef\u4ee5\u5728Python\u4e2d\u7075\u6d3b\u5730\u8f93\u51fa\u5bf9\u5e94\u7684\u5143\u7d20\uff0c\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u7684\u9700\u6c42\u3002\u65e0\u8bba\u662f\u7b80\u5355\u7684\u6570\u636e\u7ed3\u6784\u64cd\u4f5c\u8fd8\u662f\u590d\u6742\u7684\u6570\u636e\u5206\u6790\u4efb\u52a1\uff0cPython\u90fd\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u529f\u80fd\u652f\u6301\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u8f93\u51fa\u5217\u8868\u7684\u7279\u5b9a\u5143\u7d20\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\u3002\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c\u56e0\u6b64\u8981\u8f93\u51fa\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528<code>list_name[0]<\/code>\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6709\u4e00\u4e2a\u5217\u8868<code>fruits = [&#39;apple&#39;, &#39;banana&#39;, &#39;cherry&#39;]<\/code>\uff0c\u8981\u8f93\u51fa\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528<code>print(fruits[1])<\/code>\uff0c\u8fd9\u5c06\u8f93\u51fa<code>banana<\/code>\u3002<\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528\u5faa\u73af\u8f93\u51fa\u5b57\u5178\u4e2d\u7279\u5b9a\u952e\u7684\u503c\uff1f<\/strong><br \/>\u5982\u679c\u4f60\u60f3\u8f93\u51fa\u5b57\u5178\u4e2d\u7279\u5b9a\u952e\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528for\u5faa\u73af\u904d\u5386\u5b57\u5178\u7684\u952e\u3002\u6bd4\u5982\u6709\u4e00\u4e2a\u5b57\u5178<code>person = {&#39;name&#39;: &#39;Alice&#39;, &#39;age&#39;: 30, &#39;city&#39;: &#39;New York&#39;}<\/code>\uff0c\u8981\u8f93\u51fa<code>name<\/code>\u5bf9\u5e94\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528<code>print(person[&#39;name&#39;])<\/code>\u3002\u5982\u679c\u4f60\u9700\u8981\u8f93\u51fa\u6240\u6709\u952e\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528<code>for key in person: print(person[key])<\/code>\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u6839\u636e\u6761\u4ef6\u8f93\u51fa\u5143\u7d20\uff1f<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528\u6761\u4ef6\u8bed\u53e5\u7ed3\u5408\u5217\u8868\u63a8\u5bfc\u5f0f\u6765\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u8f93\u51fa\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6709\u4e00\u4e2a\u5217\u8868<code>numbers = [1, 2, 3, 4, 5]<\/code>\uff0c\u5982\u679c\u4f60\u60f3\u8f93\u51fa\u6240\u6709\u5927\u4e8e2\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528<code>output = [num for num in numbers if num &gt; 2]<\/code>\uff0c\u7136\u540e\u4f7f\u7528<code>print(output)<\/code>\uff0c\u8fd9\u5c06\u8f93\u51fa<code>[3, 4, 5]<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u7b80\u6d01\u800c\u9ad8\u6548\uff0c\u9002\u5408\u5904\u7406\u8f83\u5927\u7684\u6570\u636e\u96c6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u8f93\u51fa\u5bf9\u5e94\u5143\u7d20\u7684\u5e38\u89c1\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u5217\u8868\u7d22\u5f15\u3001\u4f7f\u7528\u5b57\u5178\u952e\u503c\u5bf9\u3001\u4f7f\u7528\u5faa\u73af\u904d\u5386\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3002\u5176\u4e2d [&hellip;]","protected":false},"author":3,"featured_media":1010324,"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\/1010317"}],"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=1010317"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1010317\/revisions"}],"predecessor-version":[{"id":1010325,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1010317\/revisions\/1010325"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1010324"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1010317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1010317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1010317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}