{"id":921191,"date":"2024-12-26T14:09:08","date_gmt":"2024-12-26T06:09:08","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/921191.html"},"modified":"2024-12-26T14:09:10","modified_gmt":"2024-12-26T06:09:10","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8python","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/921191.html","title":{"rendered":"\u5982\u4f55\u5229\u7528python"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24210255\/3fa07f58-f1e4-4238-a9bb-5f523d9b9db8.webp\" alt=\"\u5982\u4f55\u5229\u7528python\" \/><\/p>\n<p><p> <strong>\u5229\u7528Python\u53ef\u4ee5\u5b9e\u73b0\u591a\u79cd\u529f\u80fd\uff0c\u5305\u62ec\u6570\u636e\u5206\u6790\u3001\u81ea\u52a8\u5316\u4efb\u52a1\u3001<a href=\"https:\/\/docs.pingcode.com\/ask\/59192.html\" target=\"_blank\">\u673a\u5668\u5b66\u4e60<\/a>\u3001Web\u5f00\u53d1\u548c\u7f51\u7edc\u722c\u866b\u3002Python\u4e4b\u6240\u4ee5\u5982\u6b64\u5f3a\u5927\uff0c\u4e3b\u8981\u56e0\u4e3a\u5176\u7b80\u5355\u6613\u5b66\u3001\u62e5\u6709\u5927\u91cf\u7684\u5e93\u548c\u6846\u67b6\u3001\u793e\u533a\u652f\u6301\u5f3a\u5927\u3002\u4ee5\u6570\u636e\u5206\u6790\u4e3a\u4f8b\uff0cPython\u7684pandas\u5e93\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u5904\u7406\u548c\u5206\u6790\u5927\u91cf\u6570\u636e\u3002<\/strong><\/p>\n<\/p>\n<p><p>Python\u4f5c\u4e3a\u4e00\u79cd\u901a\u7528\u7f16\u7a0b\u8bed\u8a00\uff0c\u56e0\u5176\u7b80\u6d01\u6613\u8bfb\u7684\u8bed\u6cd5\u548c\u5f3a\u5927\u7684\u529f\u80fd\u5728\u5404\u4e2a\u9886\u57df\u5e7f\u6cdb\u5e94\u7528\u3002\u65e0\u8bba\u4f60\u662f\u5f00\u53d1\u8005\u3001\u6570\u636e\u5206\u6790\u5e08\u8fd8\u662f\u7814\u7a76\u4eba\u5458\uff0cPython\u90fd\u80fd\u4e3a\u4f60\u7684\u5de5\u4f5c\u63d0\u4f9b\u5f3a\u6709\u529b\u7684\u652f\u6301\u3002Python\u7684\u5f3a\u5927\u4e4b\u5904\u5728\u4e8e\u5176\u4e30\u5bcc\u7684\u751f\u6001\u7cfb\u7edf\uff0c\u62e5\u6709\u5927\u91cf\u7684\u7b2c\u4e09\u65b9\u5e93\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5feb\u901f\u5b9e\u73b0\u4e0d\u540c\u7684\u529f\u80fd\u9700\u6c42\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u5982\u4f55\u5728\u4e0d\u540c\u9886\u57df\u5229\u7528Python\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u6570\u636e\u5206\u6790<\/p>\n<\/p>\n<p><p>Python\u5728\u6570\u636e\u5206\u6790\u9886\u57df\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u4e3b\u8981\u5f97\u76ca\u4e8e\u5176\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u5e93\uff0c\u5982pandas\u548cNumPy\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>pandas\u5e93<\/strong><\/li>\n<\/ol>\n<p><p>pandas\u662f\u4e00\u4e2a\u5f3a\u5927\u7684Python\u6570\u636e\u5206\u6790\u5e93\uff0c\u4e13\u4e3a\u5904\u7406\u7ed3\u6784\u5316\u6570\u636e\u800c\u8bbe\u8ba1\u3002\u5b83\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u636e\u64cd\u4f5c\u5de5\u5177\uff0c\u53ef\u4ee5\u8f7b\u677e\u8fdb\u884c\u6570\u636e\u6e05\u6d17\u3001\u64cd\u4f5c\u548c\u5206\u6790\u3002pandas\u4e2d\u7684DataFrame\u7ed3\u6784\u7c7b\u4f3c\u4e8e\u7535\u5b50\u8868\u683c\u6216SQL\u8868\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5bf9\u6570\u636e\u8fdb\u884c\u884c\u548c\u5217\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u4f7f\u7528pandas\u53ef\u4ee5\u8f7b\u677e\u52a0\u8f7dCSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p>df = pd.read_csv(&#39;data.csv&#39;)<\/p>\n<p>print(df.head())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>NumPy\u5e93<\/strong><\/li>\n<\/ol>\n<p><p>NumPy\u662f\u53e6\u4e00\u4e2a\u91cd\u8981\u7684Python\u5e93\uff0c\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u3002\u5b83\u4e3aPython\u63d0\u4f9b\u4e86\u652f\u6301\u591a\u7ef4\u6570\u7ec4\u548c\u77e9\u9635\u8fd0\u7b97\u7684\u5f3a\u5927\u529f\u80fd\uff0c\u4ee5\u53ca\u5927\u91cf\u7684\u6570\u5b66\u51fd\u6570\u5e93\u3002NumPy\u7684\u6570\u7ec4\u7ed3\u6784\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u9ad8\u6548\u5730\u8fdb\u884c\u6570\u503c\u8ba1\u7b97\u3002<\/p>\n<\/p>\n<p><p>\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2aNumPy\u6570\u7ec4\u5e76\u8fdb\u884c\u57fa\u672c\u8fd0\u7b97\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>print(array * 2)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e8c\u3001\u81ea\u52a8\u5316\u4efb\u52a1<\/p>\n<\/p>\n<p><p>Python\u7684\u81ea\u52a8\u5316\u80fd\u529b\u4f7f\u5176\u6210\u4e3a\u5904\u7406\u91cd\u590d\u6027\u4efb\u52a1\u7684\u7406\u60f3\u5de5\u5177\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u6587\u4ef6\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n<p><p>Python\u7684os\u548cshutil\u5e93\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u81ea\u52a8\u5316\u6587\u4ef6\u64cd\u4f5c\uff0c\u4f8b\u5982\u91cd\u547d\u540d\u3001\u79fb\u52a8\u3001\u590d\u5236\u548c\u5220\u9664\u6587\u4ef6\u3002\u901a\u8fc7\u7f16\u5199\u811a\u672c\uff0c\u7528\u6237\u53ef\u4ee5\u81ea\u52a8\u5316\u65e5\u5e38\u6587\u4ef6\u7ba1\u7406\u4efb\u52a1\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import os<\/p>\n<p>import shutil<\/p>\n<p>os.rename(&#39;old_name.txt&#39;, &#39;new_name.txt&#39;)<\/p>\n<p>shutil.move(&#39;file.txt&#39;, &#39;\/new\/directory\/&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>Web\u81ea\u52a8\u5316<\/strong><\/li>\n<\/ol>\n<p><p>\u4f7f\u7528Selenium\u7b49\u5e93\uff0cPython\u53ef\u4ee5\u5b9e\u73b0Web\u81ea\u52a8\u5316\u64cd\u4f5c\uff0c\u4f8b\u5982\u6a21\u62df\u7528\u6237\u70b9\u51fb\u3001\u8868\u5355\u586b\u5199\u548c\u6570\u636e\u63d0\u4ea4\u3002Selenium\u4e0e\u6d4f\u89c8\u5668\u7684\u7ed3\u5408\uff0c\u4f7f\u5f97\u81ea\u52a8\u5316\u6d4b\u8bd5\u548c\u7f51\u9875\u6570\u636e\u6293\u53d6\u53d8\u5f97\u7b80\u5355\u3002<\/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;https:\/\/www.example.com&#39;)<\/p>\n<p>driver.find_element_by_id(&#39;submit&#39;).click()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u673a\u5668\u5b66\u4e60<\/p>\n<\/p>\n<p><p>Python\u5728\u673a\u5668\u5b66\u4e60\u9886\u57df\u7684\u5e94\u7528\u4e3b\u8981\u4f9d\u8d56\u4e8e\u5176\u4e30\u5bcc\u7684\u673a\u5668\u5b66\u4e60\u5e93\uff0c\u5982scikit-learn\u548cTensorFlow\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>scikit-learn<\/strong><\/li>\n<\/ol>\n<p><p>scikit-learn\u662f\u4e00\u4e2a\u7b80\u5355\u6613\u7528\u7684\u673a\u5668\u5b66\u4e60\u5e93\uff0c\u63d0\u4f9b\u4e86\u591a\u79cd\u5e38\u7528\u7684\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u5206\u7c7b\u3001\u56de\u5f52\u3001\u805a\u7c7b\u548c\u964d\u7ef4\u7b49\u4efb\u52a1\u3002scikit-learn\u7684\u63a5\u53e3\u8bbe\u8ba1\u7b80\u6d01\u7edf\u4e00\uff0c\u4f7f\u5f97\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u8bad\u7ec3\u548c\u9884\u6d4b\u6d41\u7a0b\u975e\u5e38\u76f4\u89c2\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from sklearn.datasets import load_iris<\/p>\n<p>from sklearn.model_selection import tr<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>n_test_split<\/p>\n<p>from sklearn.ensemble import RandomForestClassifier<\/p>\n<h2><strong>\u52a0\u8f7d\u6570\u636e\u96c6<\/strong><\/h2>\n<p>iris = load_iris()<\/p>\n<p>X, y = iris.data, iris.target<\/p>\n<h2><strong>\u5212\u5206\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6<\/strong><\/h2>\n<p>X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3)<\/p>\n<h2><strong>\u8bad\u7ec3\u6a21\u578b<\/strong><\/h2>\n<p>clf = RandomForestClassifier()<\/p>\n<p>clf.fit(X_train, y_train)<\/p>\n<h2><strong>\u9884\u6d4b<\/strong><\/h2>\n<p>y_pred = clf.predict(X_test)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>TensorFlow<\/strong><\/li>\n<\/ol>\n<p><p>TensorFlow\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u6df1\u5ea6\u5b66\u4e60\u6846\u67b6\uff0c\u7531Google\u5f00\u53d1\u3002\u5b83\u4e3a\u6784\u5efa\u548c\u8bad\u7ec3\u795e\u7ecf\u7f51\u7edc\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5904\u7406\u5927\u89c4\u6a21\u7684\u673a\u5668\u5b66\u4e60\u4efb\u52a1\u3002TensorFlow\u7279\u522b\u9002\u5408\u4e8e\u6df1\u5ea6\u5b66\u4e60\u5e94\u7528\uff0c\u5982\u56fe\u50cf\u8bc6\u522b\u548c\u81ea\u7136\u8bed\u8a00\u5904\u7406\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import tensorflow as tf<\/p>\n<h2><strong>\u6784\u5efa\u7b80\u5355\u7684\u795e\u7ecf\u7f51\u7edc<\/strong><\/h2>\n<p>model = tf.keras.Sequential([<\/p>\n<p>    tf.keras.layers.Dense(128, activation=&#39;relu&#39;),<\/p>\n<p>    tf.keras.layers.Dense(10, activation=&#39;softmax&#39;)<\/p>\n<p>])<\/p>\n<h2><strong>\u7f16\u8bd1\u6a21\u578b<\/strong><\/h2>\n<p>model.compile(optimizer=&#39;adam&#39;,<\/p>\n<p>              loss=&#39;sparse_categorical_crossentropy&#39;,<\/p>\n<p>              metrics=[&#39;accuracy&#39;])<\/p>\n<h2><strong>\u8bad\u7ec3\u6a21\u578b<\/strong><\/h2>\n<p>model.fit(X_train, y_train, epochs=5)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001Web\u5f00\u53d1<\/p>\n<\/p>\n<p><p>Python\u5728Web\u5f00\u53d1\u9886\u57df\u540c\u6837\u8868\u73b0\u51fa\u8272\uff0c\u5f97\u76ca\u4e8e\u5176\u5f3a\u5927\u7684Web\u6846\u67b6\uff0c\u5982Django\u548cFlask\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>Django<\/strong><\/li>\n<\/ol>\n<p><p>Django\u662f\u4e00\u4e2a\u9ad8\u7ea7Python Web\u6846\u67b6\uff0c\u65e8\u5728\u5feb\u901f\u5f00\u53d1\u548c\u7b80\u5316Web\u5e94\u7528\u7a0b\u5e8f\u7684\u7ef4\u62a4\u3002\u5b83\u9075\u5faa\u201cDon\u2019t Repeat Yourself\u201d\u539f\u5219\uff0c\u63d0\u4f9b\u4e86\u8bb8\u591a\u5f00\u7bb1\u5373\u7528\u7684\u529f\u80fd\uff0c\u5982\u8eab\u4efd\u9a8c\u8bc1\u3001URL\u8def\u7531\u548c\u6a21\u677f\u5f15\u64ce\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u7b80\u5355\u7684Django\u89c6\u56fe<\/p>\n<p>from django.http import HttpResponse<\/p>\n<p>def hello_world(request):<\/p>\n<p>    return HttpResponse(&quot;Hello, world!&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>Flask<\/strong><\/li>\n<\/ol>\n<p><p>Flask\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684Python Web\u6846\u67b6\uff0c\u7075\u6d3b\u6027\u5f3a\uff0c\u975e\u5e38\u9002\u5408\u6784\u5efa\u5c0f\u578bWeb\u5e94\u7528\u3002Flask\u7b80\u6d01\u7684\u8bbe\u8ba1\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u5feb\u901f\u521b\u5efaWeb\u670d\u52a1\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from flask import Flask<\/p>\n<p>app = Flask(__name__)<\/p>\n<p>@app.route(&#39;\/&#39;)<\/p>\n<p>def hello_world():<\/p>\n<p>    return &#39;Hello, World!&#39;<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    app.run()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e94\u3001\u7f51\u7edc\u722c\u866b<\/p>\n<\/p>\n<p><p>Python\u7684\u7f51\u7edc\u722c\u866b\u529f\u80fd\u5f3a\u5927\uff0c\u4e3b\u8981\u4f9d\u8d56\u4e8eBeautifulSoup\u548cScrapy\u7b49\u5e93\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>BeautifulSoup<\/strong><\/li>\n<\/ol>\n<p><p>BeautifulSoup\u662f\u4e00\u4e2aHTML\u548cXML\u89e3\u6790\u5e93\uff0c\u9002\u7528\u4e8e\u4ece\u7f51\u9875\u4e2d\u63d0\u53d6\u6570\u636e\u3002\u5b83\u53ef\u4ee5\u8f7b\u677e\u5730\u89e3\u6790\u548c\u904d\u5386HTML\u6587\u6863\u6811\uff0c\u63d0\u53d6\u9700\u8981\u7684\u4fe1\u606f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from bs4 import BeautifulSoup<\/p>\n<p>import requests<\/p>\n<p>response = requests.get(&#39;https:\/\/www.example.com&#39;)<\/p>\n<p>soup = BeautifulSoup(response.content, &#39;html.parser&#39;)<\/p>\n<h2><strong>\u63d0\u53d6\u6807\u9898<\/strong><\/h2>\n<p>title = soup.title.string<\/p>\n<p>print(title)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>Scrapy<\/strong><\/li>\n<\/ol>\n<p><p>Scrapy\u662f\u4e00\u4e2a\u7528\u4e8e\u63d0\u53d6\u7f51\u7ad9\u6570\u636e\u7684\u5f3a\u5927\u6846\u67b6\u3002\u5b83\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\u6765\u6293\u53d6\u548c\u5904\u7406\u6570\u636e\uff0c\u7279\u522b\u9002\u5408\u4e8e\u6784\u5efa\u5927\u89c4\u6a21\u7684\u722c\u866b\u9879\u76ee\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import scrapy<\/p>\n<p>class QuotesSpider(scrapy.Spider):<\/p>\n<p>    name = &quot;quotes&quot;<\/p>\n<p>    start_urls = [&#39;http:\/\/quotes.toscrape.com\/&#39;]<\/p>\n<p>    def parse(self, response):<\/p>\n<p>        for quote in response.css(&#39;div.quote&#39;):<\/p>\n<p>            yield {<\/p>\n<p>                &#39;text&#39;: quote.css(&#39;span.text::text&#39;).get(),<\/p>\n<p>      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[&hellip;]","protected":false},"author":3,"featured_media":921195,"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\/921191"}],"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=921191"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/921191\/revisions"}],"predecessor-version":[{"id":921197,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/921191\/revisions\/921197"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/921195"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=921191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=921191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=921191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}