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Python Poetry VS mypy

Compare Python Poetry VS mypy and see what are their differences

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Python Poetry logo Python Poetry

Python packaging and dependency manager.

mypy logo mypy

Mypy is an experimental optional static type checker for Python that aims to combine the benefits of dynamic (or "duck") typing and static typing.
  • Python Poetry Landing page
    Landing page //
    2022-11-12
  • mypy Landing page
    Landing page //
    2020-01-06

Python Poetry features and specs

  • 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 of Python Poetry

  • 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.

mypy features and specs

  • 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 of mypy

  • 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.

Analysis of Python Poetry

Overall verdict

  • Yes, Python Poetry is considered a good tool for managing Python projects, especially for developers who prefer a streamlined, cohesive approach to dependency management and virtual environment handling.

Why this product is good

  • Python Poetry is highly regarded because it simplifies dependency management and project setup for Python projects. It uses a simple `pyproject.toml` file for configuration and has a clear, intuitive CLI. It also resolves dependencies consistently and creates isolated virtual environments by default, which enhances project reproducibility and reduces conflicts.

Recommended for

  • Developers seeking a modern alternative to `pip` and `virtualenv`
  • Teams looking for consistent dependency resolution across different environments
  • Python developers prioritizing ease of use and intuitive project setup
  • Projects requiring robust dependency management and isolation

Python Poetry videos

My Poetry is BAD

mypy videos

Convincing an entire engineering org to use and like mypy

More videos:

  • Review - Start Being Static with MyPy - Mark Koh - PyGotham 2017

Category Popularity

0-100% (relative to Python Poetry and mypy)
Kids
100 100%
0% 0
Code Coverage
0 0%
100% 100
Front End Package Manager
Code Analysis
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Python Poetry and mypy

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mypy Reviews

7 best recommended IntelliJ IDEA Python plugins - Programmer Sought
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.

Social recommendations and mentions

Based on our record, Python Poetry should be more popular than mypy. It has been mentiond 162 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Python Poetry mentions (162)

  • Say Hello to UV: A Fast Python Package & Project Manager Written in Rust
    If you’ve been managing Python projects long enough, you’ve probably dealt with a mess of tools: pip, pip-tools, poetry, virtualenv, conda, maybe even pdm. - Source: dev.to / about 2 months ago
  • ⚡️PipZap: Zapping the mess out of the Python dependencies
    First, there was pip. Combined with a requirements.txt, it seemed like a great idea – a straightforward method to declare dependencies explicitly. Luckily, we quickly realized this method tends to spiral into chaos, particularly when developers use "tricks" like pip freeze to lock dependencies rigidly. Fortunately, the Python ecosystem has evolved, introducing modern solutions like Poetry and now uv, offering... - Source: dev.to / 2 months ago
  • How to write an AsyncIO Telegram bot in Python
    Anyway, enough reminiscing about the past, this is not intended to be the ultimate guide on asynchronous programming, but a more pragmatic quick-start guide I wish I had back then. Assuming we are in a properly managed project (either through tools like poetry or uv), let’s start with a new module telegram.py for our telegram bot. Remember to add python-telegram-bot dependency to the project. - Source: dev.to / 3 months ago
  • Managing Python Deps with Poetry
    Managing dependencies in Python projects can often become cumbersome, especially as projects grow in complexity. Poetry is a modern dependency management and packaging tool that simplifies this process, offering a streamlined way to create, manage, and distribute Python projects. - Source: dev.to / 4 months ago
  • Why You Should Rethink Your Python Toolbox in 2025
    Learn more about poetry here . It’s a great tool. - Source: dev.to / 4 months ago
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mypy mentions (50)

  • Java in the Small
    I've always admired many of Java's features, but let's not act like the reason for using Java for scripting is the pitfalls of Python. It's just because of an underlying preference for Java. 1. https://mypy-lang.org/. - Source: Hacker News / 6 months ago
  • Moving your bugs forward in time
    ‍I’m not here to tell people which languages they should love. But if you do find yourself writing production code in a dynamically typed language like Python, Ruby, or JavaScript, I would give serious consideration to opting into the type-checking tools that have become available in those ecosystems. In Python, consider requiring type hints and adding mypy checks to your CI to move your type safety bugs forward... - Source: dev.to / about 1 year ago
  • Embracing Modern Python for Web Development
    Mypy is "an optional static type checker for Python that aims to combine the benefits of dynamic (or "duck") typing and static typing". As Python is dynamically typed, Mypy adds an extra layer of safety by checking types at compile time (based on type annotations conforming to PEP 484), catching potential errors before runtime. - Source: dev.to / over 1 year ago
  • A Tale of Two Kitchens - Hypermodernizing Your Python Code Base
    Mypy stands as an essential static type-checking tool. Its primary function is to verify the correctness of types in your codebase. However, manually annotating types in legacy code can be laborious and time-consuming. - Source: dev.to / over 1 year ago
  • Lua: The Little Language That Could
    Lua is a great language for embedding, but one thing I wish it had was some form of optional type annotations that could be checked by a linter. Something like mypy for Lua would be super-useful. Source: about 2 years ago
View more

What are some alternatives?

When comparing Python Poetry and mypy, you can also consider the following products

Conda - Binary package manager with support for environments.

PyLint - Pylint is a Python source code analyzer which looks for programming errors.

pip - The PyPA recommended tool for installing Python packages.

flake8 - A wrapper around Python tools to check the style and quality of Python code.

pipenv - Python Development Workflow for Humans. Contribute to pypa/pipenv development by creating an account on GitHub.

PyFlakes - A simple program which checks Python source files for errors.