Python is an incredibly popular language with a great many users across an impressive number of domains; as such evolving the language is a complex undertaking that can't be rushed. The Python Enhancement Proposal (commonly known as PEP) process exists to provide a formal mechanism by which the community can propose, debate, vote on, and ultimately adopt significant changes to the language itself.
Even if you doubt you'll ever submit a PEP it's a good idea to keep abreast of what PEPs are out there and what changes are coming to a Python near you.
Two PEPs in particular will serve as a useful jumping off point: