Poetry
Poetry is a powerful tool in Python that simplifies dependency management for projects.
Installing Poetry
Before using Poetry, you need to install it on your operating system following the instructions in the official documentation.
Creating a New Project
Once Poetry is installed, you can use the following command to create a new project with Poetry managing the dependencies:
poetry new myproject
After the project is created, a pyproject.toml file will be generated in the root directory. It serves the same purpose as the package.json file in JavaScript projects.
Its content is as follows:
[tool.poetry]
name = "myproject"
version = "0.1.0"
description = ""
authors = ["luckrnx09 <luckrnx09@gmail.com>"]
readme = "README.md"
[tool.poetry.dependencies]
python = "^3.11"
[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"
The Python version specified will default to the version of the current Python interpreter. If you need to use a specific Python version, you can modify the pyproject.toml file directly and then create and activate a virtual environment for that Python version.
Managing Third-Party Packages
With Poetry-managed projects, you don't need to use pip to manage third-party packages.
The command to install a third-party package is as follows:
poetry add package_name
Uninstalling a package is similar:
poetry remove package_name
All installation/removal operations will automatically update the pyproject.toml file, so you don't need to manually list the dependencies using pip freeze.
In a Python project that includes a pyproject.toml file, you only need to run the poetry install command to automatically install all the project's dependencies.
Running Python Scripts
For projects that use Poetry, you need to run Python scripts with the following command to correctly resolve the dependencies:
poetry run python your_script.py