背景
pyppeteer 安装完成后执行以下 百度截图脚本 代码：
1
2
3
4
5
6
7
8
9
10
11
12
13
#!/usr/bin/env python3
import asyncio
from pyppeteer import launch
async def main():
browser = await launch()
page = await browser.newPage()
await page.goto('https://www.baidu.com')
await page.screenshot({'path': 'homepage.png'})
await browser.close()
asyncio.run(main())
执行结果：
1
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='storage.googleapis.com', port=443): Max retries exceeded with url: /chromium-browser-snapshots/Mac/588429/chrome-mac.zip (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1091)')))
解决方法
一、检查 本地 urllib3 的版本
1
$ pip show urllib3
执行结果：
1
2
3
4
5
6
7
8
9
10
Name: urllib3
Version: 1.25.8
Summary: HTTP library with thread-safe connection pooling, file post, and more.
Home-page: https://urllib3.readthedocs.io/
Author: Andrey Petrov
Author-email: andrey.petrov@shazow.net
License: MIT
Location: /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages
Requires:
Required-by: selenium, requests, pyppeteer, elasticsearch
分析：当前安装的 urllib3 的版本是 1.25.8 。
二、安装 1.25 以下的版本
1
2
$ pip install -U "urllib3<1.25"
$ pip show urllib3
执行结果：
1
2
3
4
5
6
7
8
9
10
Name: urllib3
Version: 1.24.3
Summary: HTTP library with thread-safe connection pooling, file post, and more.
Home-page: https://urllib3.readthedocs.io/
Author: Andrey Petrov
Author-email: andrey.petrov@shazow.net
License: MIT
Location: /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages
Requires:
Required-by: selenium, requests, pyppeteer, elasticsearch
三、重新在终端执行程序
程序运行正确，截图成功：
