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The Story of Features Coming in Python 3.8 and Beyond


What's coming in Python 3.8? You can learn it by yourself by reading an excellent document [What's New in Python 3.8][1]. I'm not going to retell this document. Instead I'll focus on things barely described there or not mentioned at all:

  • Why will the new features appear in Python 3.8 and what's the story behind them?
  • What is being discussed and developed now, but won't appear in Python 3.8?

I'll share the news I learned at PyCon 2019 from the talks and discussions with Python core developers. I'll mention the following topics:

  • New syntax: x := expr, f(..., /, ...), f'{expr=}'
  • New types: Literal, Final, TypedDict
  • Future features of typing and async/await
  • New approaches to optimizing Python: sub-interpreters, mypyc
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