What to expect in python 3 12
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python 3.12, released in october 2023, comes with several exciting features and improvements that enhance the language's performance, usability, and overall developer experience. below is a detailed overview of some of the key changes and new features, along with code examples to illustrate their use.
key features and improvements in python 3.12
1. **performance improvements**:
python 3.12 continues the trend of performance improvements with optimizations in the cpython implementation. these optimizations make python faster in various scenarios, especially for common operations.
**example**: while you might not see specific code for performance improvements, running benchmarks can show significant speedups when migrating from previous versions.
2. **f-strings enhancements**:
f-strings (formatted string literals) have received an enhancement that allows for the inclusion of the `=` sign to show both expressions and their values, which improves debugging.
**example**:
3. **new `typing` features**:
python 3.12 introduces new features in the `typing` module, including `self` type, `typing.paramspec`, and `typing.typevar` improvements. this enhances type hinting and makes it easier to write type-safe code.
**example**:
4. **new `match` statement enhancements**:
the structural pattern matching capabilities introduced in python 3.10 have been improved, allowing for more expressive and powerful match statements.
**example**:
5. **improvements to error messages**:
python 3.12 includes improvements to error messages, making them more informative and user-friendly. this is particularly useful for beginners and helps in debugging.
**example**:
if you try to access an undefined variable, python 3.12 may provide a clearer message indicating what went wrong.
6. **new `tomllib` for toml parsing**:
python 3.12 introduces a new standard library module called `tomllib` for parsing toml (tom’s obvious, minimal language) fi ...
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