mypy VS Python Poetry

• Static Type Checking
  Mypy provides static type checking for Python code, allowing developers to detect type errors during development rather than at runtime.
• Improved Code Quality
  By catching type errors early, Mypy helps ensure code correctness and maintainability, leading to improved overall code quality.
• Better Documentation
  Mypy's type annotations serve as a form of documentation, making it easier for developers to understand the expected types of function parameters and return values.
• Easy Integration
  Mypy can be easily integrated with existing Python projects incrementally, allowing teams to adopt type checking gradually.
• Support for Python 3 Typing
  Mypy supports Python 3's type hinting syntax, making it a natural fit for modern Python codebases.

Possible disadvantages

• Partial Support for Python Features
  Mypy may not fully support some dynamic features of Python, leading to limitations in its type-checking capabilities for certain code patterns.
• Initial Learning Curve
  Developers unfamiliar with type annotations or static type checking may face a learning curve when first adopting Mypy in their projects.
• Additional Code Overhead
  Mypy requires additional type annotations in the code, which can add to the overall codebase size and require extra effort to maintain.
• Performance Overhead
  While Mypy itself does not affect runtime performance, running type checks during development can introduce additional processing time.
• Incompatibility with Some Libraries
  Certain third-party libraries may not provide type stubs or may not be fully compatible with Mypy's type checking, requiring developers to create custom stubs.

• Dependency Management
  Python Poetry provides a robust system for managing project dependencies, making it easy to specify, install, and update packages.
• Simplified Configuration
  It uses a clear and concise `pyproject.toml` file for configuration, which simplifies the setup process compared to other tools.
• Environment Isolation
  Automatically manages virtual environments, ensuring that dependencies are isolated and do not interfere with each other.
• Consistent Builds
  Poetry can lock dependencies to exact versions, ensuring consistent and repeatable builds across different environments.
• Publishing Tools
  Includes built-in tools for publishing packages to PyPI, making the distribution process straightforward and streamlined.

Possible disadvantages

• Learning Curve
  Requires users to learn new commands and techniques, which can be a barrier for those familiar with other tools like pip and virtualenv.
• Performance
  Dependency resolution and installation processes can sometimes be slower compared to tools like pip, especially for large projects.
• Compatibility
  May have compatibility issues with certain packages or tools that expect a different environment or dependency management system.
• Community Support
  While growing, the community and ecosystem around Poetry are not as large or mature as those around more established tools.
• Limited IDE Integration
  Integration with some Integrated Development Environments (IDEs) might not be as seamless as for more widely used tools, potentially impacting productivity.

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Convincing an entire engineering org to use and like mypy

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My Poetry is BAD

• 7 best recommended IntelliJ IDEA Python plugins - Programmer Sought
  www.programmersought.com · Jan 2021

  This plugin from the JetBrains plugin market integrates MyPy into your Intellij. If you need some guidance, the MyPy website provides a lot of documentation to help you install and use MyPy to improve your Python code.

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• Clean code didn't get less important in the AI age — it got more important

  For static analysis there's PHPStan for PHP and Mypy for Python. For formatting, Prettier and gofmt are the cheapest guardrail there Is, with zero excuse not to run one. For security, Semgrep Covers the same principle at higher stakes. - Source: dev.to / 6 days ago

• The lazy developer's code quality

  Pyright: the type checker. Skipping mypy, pyrefly and ty. For now. - Source: dev.to / 5 months ago

• How to Set Up Pre-Commit Hooks for Teams Using AI Coding Assistants

  Adjust additional_dependencies to include the type stubs your project uses. Mypy will catch cases where AI-generated code calls methods that do not exist on a type, passes arguments in the wrong order, or skips null checks. - Source: dev.to / 5 months ago

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• The lazy developer's code quality

  And the environment, can it be modernized too ? With what ? Well, just like there are two schools, emacs and vi, there are also two schools, poetry and uv .. Without even mentioning all the others. - Source: dev.to / 5 months ago

• Build, Manage, and Ship Python Projects the Easy Way using Poetry

  Poetry solves this problem by giving you one clean workflow for managing Python projects from start to finish. - Source: dev.to / 10 months ago

• How I stopped worrying and loved Makefiles

  I love Python for it's simplicity... At least when it comes to coding, because when you start managing dependencies, it's getting tricky. What do you use: raw dependencies.txt or rather Poetry or Pipenv? Do you use system Python or maybe... - Source: dev.to / about 1 year ago

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