You probably don't want to do this. For stability it's best to keep the system managed through packages from the standard repositories. If you install things t

You probably don't want to do this. For stability it's best to keep the system managed through packages from the standard repositories. If you install things that are not from the repositories the packaging system won't be able to track dependencies - it will have bad information about some capabilities as some items won't have been installed using the packaging system. Overwriting official system libraries is a common cause of problems. It's best to only upgrade something when the repository for your release makes it available: it pays to be conservative about the repositories you use, sticking to the standard ones and thinking very carefully about adding any others (e.g PPA's). If you want 'newer' versions of frameworks/libraries for development then you're better off installing them away from the main system - traditionally that is /usr/local, or using a partitioning system such as chroot. For Python specifically there's a really nice option of use venv/virtualenv.