Installing packages onto the system (“pip install”) is different than the interpreter importing them (loading them when the interpreter hits an “import” statement). Not only is it resolving imports into file paths and loading them into memory, but it’s also executing module-level code which tends to be quite common in Python, so it’s not at all uncommon for imports to take 5s or more.
Meanwhile in Go, dependencies are baked into the executable so there is no resolving of dependencies, and the analog to “module level code” (i.e., package init() functions) are discouraged and thus much less common and where they occur they don’t do as much work compared to the average Python package.
Interesting, I see what you mean, but in my time working with python I've never seen that as an issue. Perhaps in different domains such as big data it might be a problem.
Meanwhile in Go, dependencies are baked into the executable so there is no resolving of dependencies, and the analog to “module level code” (i.e., package init() functions) are discouraged and thus much less common and where they occur they don’t do as much work compared to the average Python package.