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Table of Contents

  • Developer Experience Improvements
    • Even Friendlier Python REPL
    • More Helpful Error Messages
    • Safer Live Process Debugging
  • New Python Syntax
    • Template Strings (T-Strings)
    • Exceptions Without Parentheses
    • Warnings in try…finally Blocks
  • Type Checking Revolution
    • A Quick Tour of Typing History
    • Deferred Evaluation of Annotations
  • Performance Optimizations
    • Parallel Subinterpreters
    • Free-Threaded Python
    • Experimental JIT Builds
    • Tail-Calling Interpreter
    • Incremental Garbage Collector
  • So, Should You Upgrade to Python 3.14?
  • Conclusion
  • Frequently Asked Questions