How so? The companies I worked for were using venv's but nothing that could help with standards.

Using a private npm repo, I can actually do aninstall of a library I want to use and it'll refuse to install if that library isn't already approved for use by the organization, and if it is/does, it will install only the approved version. Further, I still don't have any of the libraries installed I don't want (even secure-seeming unnecessary code is a potential risk and unnecessary). The last 2 places I worked that used python used venv's, but the pip requirements.txt file was still fairly hard to keep regulated.