pyppeteer安裝chromium太慢

在安裝chromium的時候，因爲是谷歌源所以我們下載不了或者下載很慢，並且網上大多數的資料都是複製別人的，並沒有給出具體的解決辦法，很坑，這裏給出我搞了一天的解決辦法，有點複雜

我們選擇系統默認的版本，這樣最保險

用清華源安裝pyppeteer

pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple pyppeteer

然後我們在新建一個py文件寫入一下代碼

from pyppeteer import chromium_downloader

print(chromium_downloader.DEFAULT_DOWNLOAD_HOST)
print(chromium_downloader.downloadURLs)
print(chromium_downloader.BASE_URL)

"""
https://storage.googleapis.com
{'linux': 'https://storage.googleapis.com/chromium-browser-snapshots/Linux_x64/575458/chrome-linux.zip', 'mac': 'https://storage.googleapis.com/chromium-browser-snapshots/Mac/575458/chrome-mac.zip', 'win32': 'https://storage.googleapis.com/chromium-browser-snapshots/Win/575458/chrome-win32.zip', 'win64': 'https://storage.googleapis.com/chromium-browser-snapshots/Win_x64/575458/chrome-win32.zip'}
https://storage.googleapis.com/chromium-browser-snapshots
"""

可以發現，這裏的chromium下載源是國外的，國外的是普遍的慢
其實chromium源也有類似於pip一樣的國內鏡像源
例如 https://npm.taobao.org/mirrors/chromium-browser-snapshots/

1. 我們可以查看下其pyppeteer源碼，位置在$python\Lib\site-packages\pyppeteer\chromium_downloader.py
2. 該源碼 中的DEFAULT_DOWNLOAD_HOST字段，字段的值爲https://storage.googleapis.com
3. 我們改變它的值，設置爲 DEFAULT_DOWNLOAD_HOST = 'https://npm.taobao.org/mirrors'

這樣，我們在一次打印chromium下載器的信息就會發生改變

https://npm.taobao.org/mirrors
{'linux': 'https://npm.taobao.org/mirrors/chromium-browser-snapshots/Linux_x64/575458/chrome-linux.zip', 'mac': 'https://npm.taobao.org/mirrors/chromium-browser-snapshots/Mac/575458/chrome-mac.zip', 'win32': 'https://npm.taobao.org/mirrors/chromium-browser-snapshots/Win/575458/chrome-win32.zip', 'win64': 'https://npm.taobao.org/mirrors/chromium-browser-snapshots/Win_x64/575458/chrome-win32.zip'}
https://npm.taobao.org/mirrors/chromium-browser-snapshots

接下來通過pyppeteer安裝chromium的速度就會倍速的增大

from pyppeteer import chromium_downloader

chromium_downloader.download_chromium()
print(chromium_downloader.check_chromium())

[W:pyppeteer.chromium_downloader] start chromium download.
Download may take a few minutes.
https://npm.taobao.org/mirrors/chromium-browser-snapshots
100%|██████████| 133194757/133194757 [00:22<00:00, 6053700.03it/s]
[W:pyppeteer.chromium_downloader] 
chromium download done.
[W:pyppeteer.chromium_downloader] chromium extracted to: C:\Users\Administrator\AppData\Local\pyppeteer\pyppeteer\local-chromium\575458