A Perfect Match The history, design, implementation, and future of Python's...
summary
Python 3.10 adds structural pattern matching as a genuine destructuring + control-flow construct rather than a switch, backed by PEPs 622/634/635/636 and a working CPython implementation that preserves existing code via soft keywords. The implementation produces new bytecode (eg optimized match_sequence and length opcodes) from a dedicated spam compiler, shows real performance gains, enables class and mapping patterns, and experiments with decision trees and unreachable-pattern warnings for future Python versions.
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chapters (8)
- 0:00Introduction
- 1:19History
- 3:50Repository
- 5:32Design
- 8:22Match Statement
- 15:12Soft Keywords
- 16:42Structural Pattern Matching
- 20:12The Future
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