12/27/2023 0 Comments Puppeteer python download![]() ![]() □ If you are not familiar with how child process work in Node I highly encourage you to give this article a read. We can combine the child process module with our Puppeteer script and download files in parallel. ![]() Child process is how Node.js handles parallel programming. We can fork multiple child_proces in Node. Our CPU cores can run multiple processes at the same time. □ Learn more about the single threaded architecture of node here Therefore if we have to download 10 files each 1 gigabyte in size and each requiring about 3 mins to download then with a single process we will have to wait for 10 x 3 = 30 minutes for the task to finish. It can only execute one process at a time. You see Node.js in its core is a single-threaded system. However, if you have to download multiple large files things start to get complicated. In this next part, we will dive deep into some of the advanced concepts. We can also save the file into the desired path using,ĭownloading a file in playwright is very simple and downright smooth with a straightforward and reliable API.Const browser = await puppeteer.In windows, the path to the download file looks something like this.Ĭ:\Users\arili\AppData\Local\Temp\playwright-artifacts-TXNHDw\3e95cb75-6df1-4a8f-8e2e-edadf50d4979 Once that is done, the file will be downloaded successfully. ![]() So here it is wrapped inside the promise to avoid a race condition between the wait and click.Here is the same syntax with a real-time working download example.After it has been done path can be seen in the output.Before that playwright is said to wait for the event till the download happens.The locator inside the promise clicks on the download button, which triggers the download.The download is wrapped inside the promise.all to prevent race conditions between clicking and waiting for the download.Page.locator('text=Download file').click(), Here is the syntax: const = await Promise.all([ We can see that the download event is set on course once it starts, and the path is available when it gets completed. The download files that belong to the browser context are deleted when the context is closed. Download objects are dispatched via page.on('download') event. The playwright can also download a file and save it to a default path. ![]()
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