python

python playwright爬虫有何技巧

小樊
82
2024-12-11 16:09:42
栏目: 编程语言

Python Playwright是一个强大的自动化库,它允许你通过编程控制浏览器,从而进行网页数据的抓取。以下是使用Python Playwright进行爬虫的一些技巧和最佳实践:

使用Playwright进行爬虫的技巧

示例代码

以下是一个简单的Playwright爬虫示例,用于抓取网页上的标题和链接:

from playwright.sync_api import sync_playwright

def run(playwright):
    browser = playwright.chromium.launch()
    context = browser.new_context()
    page = context.new_page()
    page.goto('https://example.com')

    # 使用定位器选择元素
    elements = page.locator('div.content a')

    # 遍历元素,获取标题和链接
    for element in elements:
        title = element.text_content()
        link = element.get_attribute('href')
        print(f'Title: {title}, Link: {link}')

    browser.close()

with sync_playwright() as playwright:
    run(playwright)

通过以上技巧和示例代码,你可以更有效地使用Python Playwright进行网页爬取。记得在爬取数据时,始终遵守相关法律法规和网站的使用条款。

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