Pattern matching accepted for Python

The Python steering council has, after some discussion, accepted thecontroversial proposal to add apattern-matching primitive to the language."We acknowledge thatPattern Matching is an extensive change to Python and that reachingconsensus across the entire community is close to impossible. Differentpeople have reservations or concerns around different aspects of thesemantics and the syntax (as does the Steering Council). In spite of this,after much deliberation, reviewing all conversations around these PEPs, aswell as competing proposals and existing poll results, and after severalin-person discussions with the PEP authors, we are confident that PatternMatching as specified in PEP 634, et al, will be a great addition to thePython language."