{"id":1147300,"date":"2025-01-13T16:23:19","date_gmt":"2025-01-13T08:23:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1147300.html"},"modified":"2025-01-13T16:23:22","modified_gmt":"2025-01-13T08:23:22","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8python%e5%88%86%e6%9e%90%e7%bd%91%e7%ab%99","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1147300.html","title":{"rendered":"\u5982\u4f55\u5229\u7528python\u5206\u6790\u7f51\u7ad9"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25165438\/37e5e3a1-eed8-4e00-a641-be9901317507.webp\" alt=\"\u5982\u4f55\u5229\u7528python\u5206\u6790\u7f51\u7ad9\" \/><\/p>\n<p><p> \u5229\u7528Python\u5206\u6790\u7f51\u7ad9\u53ef\u4ee5\u901a\u8fc7<strong>\u6570\u636e\u6536\u96c6\u3001\u6570\u636e\u6e05\u6d17\u3001\u6570\u636e\u5206\u6790\u3001\u6570\u636e\u53ef\u89c6\u5316<\/strong>\u8fd9\u51e0\u4e2a\u6b65\u9aa4\u6765\u5b9e\u73b0\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u901a\u8fc7\u6bcf\u4e2a\u6b65\u9aa4\u6765\u5b8c\u6210\u7f51\u7ad9\u6570\u636e\u7684\u5206\u6790\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u6570\u636e\u6536\u96c6<\/h3>\n<\/p>\n<p><h4>1.1 \u4f7f\u7528Requests\u5e93\u8fdb\u884c\u6570\u636e\u6536\u96c6<\/h4>\n<\/p>\n<p><p>Requests\u5e93\u662fPython\u4e2d\u6700\u5e38\u7528\u7684HTTP\u8bf7\u6c42\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5411\u7f51\u7ad9\u53d1\u9001\u8bf7\u6c42\u5e76\u83b7\u53d6\u54cd\u5e94\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import requests<\/p>\n<p>url = &#39;http:\/\/example.com&#39;<\/p>\n<p>response = requests.get(url)<\/p>\n<p>print(response.text)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>1.2 \u4f7f\u7528BeautifulSoup\u5e93\u89e3\u6790HTML<\/h4>\n<\/p>\n<p><p>BeautifulSoup\u662f\u4e00\u4e2a\u7528\u4e8e\u89e3\u6790HTML\u548cXML\u6587\u6863\u7684Python\u5e93\uff0c\u80fd\u591f\u65b9\u4fbf\u5730\u4ece\u7f51\u9875\u4e2d\u63d0\u53d6\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f7f\u7528\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from bs4 import BeautifulSoup<\/p>\n<p>html_content = &#39;&lt;html&gt;&lt;head&gt;&lt;title&gt;Example&lt;\/title&gt;&lt;\/head&gt;&lt;body&gt;&lt;h1&gt;Hello, world!&lt;\/h1&gt;&lt;\/body&gt;&lt;\/html&gt;&#39;<\/p>\n<p>soup = BeautifulSoup(html_content, &#39;html.parser&#39;)<\/p>\n<p>print(soup.title.text)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>1.3 \u4f7f\u7528Selenium\u5e93\u8fdb\u884c\u52a8\u6001\u7f51\u9875\u6570\u636e\u6536\u96c6<\/h4>\n<\/p>\n<p><p>\u5bf9\u4e8e\u4e00\u4e9b\u9700\u8981\u8fdb\u884cJavaScript\u4ea4\u4e92\u7684\u7f51\u7ad9\uff0c\u53ef\u4ee5\u4f7f\u7528Selenium\u5e93\u6765\u6a21\u62df\u6d4f\u89c8\u5668\u64cd\u4f5c\u5e76\u83b7\u53d6\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from selenium import webdriver<\/p>\n<p>driver = webdriver.Chrome()<\/p>\n<p>driver.get(&#39;http:\/\/example.com&#39;)<\/p>\n<p>print(driver.page_source)<\/p>\n<p>driver.quit()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u6570\u636e\u6e05\u6d17<\/h3>\n<\/p>\n<p><h4>2.1 \u6570\u636e\u6e05\u6d17\u7684\u91cd\u8981\u6027<\/h4>\n<\/p>\n<p><p>\u5728\u8fdb\u884c\u6570\u636e\u5206\u6790\u4e4b\u524d\uff0c\u5bf9\u6570\u636e\u8fdb\u884c\u6e05\u6d17\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u6b65\u3002\u6570\u636e\u6e05\u6d17\u5305\u62ec\u53bb\u9664\u65e0\u7528\u6570\u636e\u3001\u5904\u7406\u7f3a\u5931\u503c\u3001\u89c4\u8303\u5316\u6570\u636e\u683c\u5f0f\u7b49\u3002<\/p>\n<\/p>\n<p><h4>2.2 \u4f7f\u7528Pandas\u5e93\u8fdb\u884c\u6570\u636e\u6e05\u6d17<\/h4>\n<\/p>\n<p><p>Pandas\u5e93\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u6570\u636e\u5206\u6790\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406\u548c\u6e05\u6d17\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>data = {&#39;Name&#39;: [&#39;John&#39;, &#39;Anna&#39;, &#39;Peter&#39;], &#39;Age&#39;: [28, None, 34]}<\/p>\n<p>df = pd.DataFrame(data)<\/p>\n<h2><strong>\u586b\u5145\u7f3a\u5931\u503c<\/strong><\/h2>\n<p>df[&#39;Age&#39;].fillna(df[&#39;Age&#39;].mean(), inplace=True)<\/p>\n<h2><strong>\u5220\u9664\u65e0\u7528\u5217<\/strong><\/h2>\n<p>df.drop(columns=[&#39;Name&#39;], inplace=True)<\/p>\n<p>print(df)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u6570\u636e\u5206\u6790<\/h3>\n<\/p>\n<p><h4>3.1 \u4f7f\u7528Pandas\u8fdb\u884c\u57fa\u672c\u6570\u636e\u5206\u6790<\/h4>\n<\/p>\n<p><p>Pandas\u5e93\u4e0d\u4ec5\u53ef\u4ee5\u8fdb\u884c\u6570\u636e\u6e05\u6d17\uff0c\u8fd8\u53ef\u4ee5\u8fdb\u884c\u57fa\u672c\u7684\u6570\u636e\u5206\u6790\u64cd\u4f5c\uff0c\u5982\u63cf\u8ff0\u7edf\u8ba1\u3001\u6570\u636e\u5206\u7ec4\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>data = {&#39;Name&#39;: [&#39;John&#39;, &#39;Anna&#39;, &#39;Peter&#39;], &#39;Age&#39;: [28, 22, 34], &#39;Salary&#39;: [50000, 60000, 70000]}<\/p>\n<p>df = pd.DataFrame(data)<\/p>\n<h2><strong>\u63cf\u8ff0\u7edf\u8ba1<\/strong><\/h2>\n<p>print(df.describe())<\/p>\n<h2><strong>\u6309\u5e74\u9f84\u5206\u7ec4\u5e76\u8ba1\u7b97\u5e73\u5747\u5de5\u8d44<\/strong><\/h2>\n<p>print(df.groupby(&#39;Age&#39;)[&#39;Salary&#39;].mean())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3.2 \u4f7f\u7528NumPy\u8fdb\u884c\u9ad8\u7ea7\u6570\u636e\u5206\u6790<\/h4>\n<\/p>\n<p><p>NumPy\u5e93\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u79d1\u5b66\u8ba1\u7b97\u5e93\uff0c\u53ef\u4ee5\u8fdb\u884c\u9ad8\u7ea7\u7684\u6570\u636e\u5206\u6790\u64cd\u4f5c\uff0c\u5982\u77e9\u9635\u8fd0\u7b97\u3001\u7edf\u8ba1\u5206\u6790\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>data = np.array([[28, 50000], [22, 60000], [34, 70000]])<\/p>\n<h2><strong>\u8ba1\u7b97\u5e73\u5747\u5e74\u9f84\u548c\u5e73\u5747\u5de5\u8d44<\/strong><\/h2>\n<p>print(np.mean(data, axis=0))<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u6570\u636e\u53ef\u89c6\u5316<\/h3>\n<\/p>\n<p><h4>4.1 \u4f7f\u7528Matplotlib\u8fdb\u884c\u6570\u636e\u53ef\u89c6\u5316<\/h4>\n<\/p>\n<p><p>Matplotlib\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u6570\u636e\u53ef\u89c6\u5316\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u7ed8\u5236\u5404\u79cd\u56fe\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import matplotlib.pyplot as plt<\/p>\n<p>data = {&#39;Name&#39;: [&#39;John&#39;, &#39;Anna&#39;, &#39;Peter&#39;], &#39;Age&#39;: [28, 22, 34], &#39;Salary&#39;: [50000, 60000, 70000]}<\/p>\n<p>df = pd.DataFrame(data)<\/p>\n<h2><strong>\u7ed8\u5236\u6298\u7ebf\u56fe<\/strong><\/h2>\n<p>plt.plot(df[&#39;Name&#39;], df[&#39;Salary&#39;])<\/p>\n<p>plt.xlabel(&#39;Name&#39;)<\/p>\n<p>plt.ylabel(&#39;Salary&#39;)<\/p>\n<p>plt.title(&#39;Salary by Name&#39;)<\/p>\n<p>plt.show()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>4.2 \u4f7f\u7528Seaborn\u8fdb\u884c\u9ad8\u7ea7\u6570\u636e\u53ef\u89c6\u5316<\/h4>\n<\/p>\n<p><p>Seaborn\u662f\u57fa\u4e8eMatplotlib\u7684\u9ad8\u7ea7\u6570\u636e\u53ef\u89c6\u5316\u5e93\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u7ed8\u5236\u7f8e\u89c2\u7684\u7edf\u8ba1\u56fe\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import seaborn as sns<\/p>\n<p>data = {&#39;Name&#39;: [&#39;John&#39;, &#39;Anna&#39;, &#39;Peter&#39;], &#39;Age&#39;: [28, 22, 34], &#39;Salary&#39;: [50000, 60000, 70000]}<\/p>\n<p>df = pd.DataFrame(data)<\/p>\n<h2><strong>\u7ed8\u5236\u67f1\u72b6\u56fe<\/strong><\/h2>\n<p>sns.barplot(x=&#39;Name&#39;, y=&#39;Salary&#39;, data=df)<\/p>\n<p>plt.title(&#39;Salary by Name&#39;)<\/p>\n<p>plt.show()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u5b9e\u6218\u6848\u4f8b<\/h3>\n<\/p>\n<p><h4>5.1 \u722c\u53d6IMDB\u7535\u5f71\u6570\u636e\u5e76\u8fdb\u884c\u5206\u6790<\/h4>\n<\/p>\n<p><p>\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e2a\u5b9e\u9645\u7684\u6848\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u4f7f\u7528Python\u8fdb\u884c\u7f51\u7ad9\u6570\u636e\u7684\u5206\u6790\u3002\u6211\u4eec\u5c06\u722c\u53d6IMDB\u7f51\u7ad9\u7684\u7535\u5f71\u6570\u636e\uff0c\u5e76\u8fdb\u884c\u5206\u6790\u548c\u53ef\u89c6\u5316\u3002<\/p>\n<\/p>\n<p><h4>5.2 \u722c\u53d6\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528Requests\u548cBeautifulSoup\u5e93\u6765\u722c\u53d6IMDB\u7f51\u7ad9\u7684\u7535\u5f71\u6570\u636e\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import requests<\/p>\n<p>from bs4 import BeautifulSoup<\/p>\n<p>url = &#39;https:\/\/www.imdb.com\/chart\/top&#39;<\/p>\n<p>response = requests.get(url)<\/p>\n<p>soup = BeautifulSoup(response.text, &#39;html.parser&#39;)<\/p>\n<p>movies = []<\/p>\n<p>for row in soup.find_all(&#39;tr&#39;):<\/p>\n<p>    title_column = row.find(&#39;td&#39;, class_=&#39;titleColumn&#39;)<\/p>\n<p>    if title_column:<\/p>\n<p>        title = title_column.a.text<\/p>\n<p>        year = title_column.span.text.strip(&#39;()&#39;)<\/p>\n<p>        rating = row.find(&#39;td&#39;, class_=&#39;imdbRating&#39;).strong.text<\/p>\n<p>        movies.append({&#39;title&#39;: title, &#39;year&#39;: int(year), &#39;rating&#39;: float(rating)})<\/p>\n<p>print(movies)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>5.3 \u6570\u636e\u6e05\u6d17<\/h4>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u722c\u53d6\u7684\u6570\u636e\u8fdb\u884c\u6e05\u6d17\u548c\u5904\u7406\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>df = pd.DataFrame(movies)<\/p>\n<h2><strong>\u8f6c\u6362\u5e74\u4efd\u4e3a\u6574\u6570<\/strong><\/h2>\n<p>df[&#39;year&#39;] = df[&#39;year&#39;].astype(int)<\/p>\n<h2><strong>\u53bb\u9664\u91cd\u590d\u6570\u636e<\/strong><\/h2>\n<p>df.drop_duplicates(inplace=True)<\/p>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>5.4 \u6570\u636e\u5206\u6790<\/h4>\n<\/p>\n<p><p>\u6211\u4eec\u53ef\u4ee5\u5bf9\u6e05\u6d17\u540e\u7684\u6570\u636e\u8fdb\u884c\u4e00\u4e9b\u57fa\u672c\u7684\u5206\u6790\uff0c\u5982\u8ba1\u7b97\u7535\u5f71\u7684\u5e73\u5747\u8bc4\u5206\u3001\u6309\u5e74\u4efd\u5206\u7ec4\u7edf\u8ba1\u7b49\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u8ba1\u7b97\u5e73\u5747\u8bc4\u5206<\/p>\n<p>print(df[&#39;rating&#39;].mean())<\/p>\n<h2><strong>\u6309\u5e74\u4efd\u5206\u7ec4\u7edf\u8ba1<\/strong><\/h2>\n<p>print(df.groupby(&#39;year&#39;)[&#39;rating&#39;].mean())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>5.5 \u6570\u636e\u53ef\u89c6\u5316<\/h4>\n<\/p>\n<p><p>\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Matplotlib\u548cSeaborn\u5e93\u5bf9\u5206\u6790\u7ed3\u679c\u8fdb\u884c\u53ef\u89c6\u5316\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import matplotlib.pyplot as plt<\/p>\n<p>import seaborn as sns<\/p>\n<h2><strong>\u7ed8\u5236\u7535\u5f71\u8bc4\u5206\u5206\u5e03\u56fe<\/strong><\/h2>\n<p>sns.histplot(df[&#39;rating&#39;], bins=10, kde=True)<\/p>\n<p>plt.xlabel(&#39;Rating&#39;)<\/p>\n<p>plt.ylabel(&#39;Frequency&#39;)<\/p>\n<p>plt.title(&#39;Distribution of Movie Ratings&#39;)<\/p>\n<p>plt.show()<\/p>\n<h2><strong>\u7ed8\u5236\u6309\u5e74\u4efd\u5206\u7ec4\u7684\u5e73\u5747\u8bc4\u5206\u56fe<\/strong><\/h2>\n<p>average_ratings_by_year = df.groupby(&#39;year&#39;)[&#39;rating&#39;].mean().reset_index()<\/p>\n<p>sns.lineplot(x=&#39;year&#39;, y=&#39;rating&#39;, data=average_ratings_by_year)<\/p>\n<p>plt.xlabel(&#39;Year&#39;)<\/p>\n<p>plt.ylabel(&#39;Average Rating&#39;)<\/p>\n<p>plt.title(&#39;Average Movie Rating by 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