[anacoluthe]

What if the depedencies you pinned have non-pinned depedencies?

packageA==1.0.0 depends itself on packageB

Therefore, you can find yourself with a different set of deps. Had a bug like this once.

[im3w1l]

Pip freeze will pin explicit as well as transitive dependencies

[fnord123]

It's a hassle to do this correctly and upgrade the dependencies. Use poetry.

[earthboundkid]

This is not actually true. :-) Pip will install transitive deps from a requirements file unless you add the “no deps” flag. Pip freeze doesn’t pin anything. It just dumps stuff into a text file. If it’s a complete list, it has the side effect of pinning, but that’s not guaranteed by pip freeze in any way.

[japanuspus]

You just pin the sub-dependency. This is builtin functionality for all the python environment managers.