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摘要: from selenium import webdriver from pyquery import PyQuery as pq from selenium.webdriver.common.by import By from selenium.webdriver.support import ex 阅读全文
posted @ 2025-12-29 13:56 chenlight 阅读(6) 评论(0) 推荐(0)
摘要: from playwright.sync_api import sync_playwright def on_response(response): print(f'Status {response.status}:{response.url}') with sync_playwright() as 阅读全文
posted @ 2025-12-29 11:18 chenlight 阅读(24) 评论(0) 推荐(0)
摘要: from playwright.sync_api import sync_playwright with sync_playwright() as p: for browser_type in [p.chromium,p.firefox,p.webkit]: browser = browser_ty 阅读全文
posted @ 2025-12-29 08:59 chenlight 阅读(168) 评论(0) 推荐(0)
摘要: 使用 webdriver-manager 来自动管理 geckodriver(无需手动下载、配置环境变量),这是 Selenium 自动化中更高效、更省心的方案,我会为你提供完整的配置步骤、代码示例和核心注意事项。 一、前置准备:安装必要依赖 首先需要安装两个核心 Python 包:selenium 阅读全文
posted @ 2025-12-28 17:16 chenlight 阅读(10) 评论(0) 推荐(0)
摘要: # 定义全局变量 # session = "初始全局值" session = None def no_global_demo(): # 未声明 global,此处是创建局部变量 session,而非修改全局变量 # session = "局部变量值" print("局部作用域内(无global):" 阅读全文
posted @ 2025-12-28 15:25 chenlight 阅读(2) 评论(0) 推荐(0)
摘要: import asyncio import aiohttp CONCURRENCY = 5 URL = 'https://www.baidu.com' semaphore = asyncio.Semaphore(CONCURRENCY) session = None async def scrape 阅读全文
posted @ 2025-12-28 11:52 chenlight 阅读(4) 评论(0) 推荐(0)
摘要: 在 Python 中,如果你定义了一个 协程函数(coroutine function),例如: async def funa(): ... 那么 funa() 本身并不会立即执行,而是返回一个 协程对象(coroutine object)。要真正“启动”或“运行”这个协程函数,有以下几种常见方式: 阅读全文
posted @ 2025-12-28 10:51 chenlight 阅读(2) 评论(0) 推荐(0)
摘要: import asyncio import aiohttp import time start = time.time() async def get(url): session = aiohttp.ClientSession() response = await session.get(url) 阅读全文
posted @ 2025-12-28 09:59 chenlight 阅读(11) 评论(0) 推荐(0)
摘要: import asyncio import requests async def request(): url = 'https://www.baidu.com' status = requests.get(url) # 同步阻塞的GET请求 print("This is :",status) pr 阅读全文
posted @ 2025-12-26 17:24 chenlight 阅读(1) 评论(0) 推荐(0)
摘要: import json import requests import logging logging.basicConfig( level=logging.INFO, format='%(asctime)s - %(levelname)s: %(message)s' ) INDEX_URL = 'h 阅读全文
posted @ 2025-12-26 15:09 chenlight 阅读(3) 评论(0) 推荐(0)
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