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Since Python 3.5, type annotations can be used for possible static analysis, refactoring, runtime type checking and code generation. An optional static type checker named mypy supports compile-time type checking.
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Python developers should strive to avoid premature optimization since it can reduce readability and add code that only exists to improve performance. This may complicate programs, making them harder to maintain and debug. When speed is important, you can move time-critical functions to extension modules written in languages such as C/C++. You can also use PyPy or Cython.
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SonarLint
Deliver Cleaner and Safer Code - Right in Your IDE of Choice!. SonarLint is a free and open source IDE extension that identifies and catches bugs and vulnerabilities as you code, directly in the IDE. Install from your favorite IDE marketplace today.