Simple script to convert raw poetry dependencies to requirements.txt format

poetry2pip.py

import re
import toml


def convert():
    data = toml.load("pyproject.toml")

    result = []
    for package_name, params in data["tool"]["poetry"]["dependencies"].items():
        if package_name == "python":
            continue

        if not isinstance(params, dict):
            params = {"version": params}

        extras = ",".join(params.get("extras", []))
        if extras:
            package_name = f"{package_name}[{extras}]"

        version = params["version"]
        tmp = re.search(r"(.*?)([\d\.]+)", version)
        op, version = tmp.groups()
        op = "==" if not op or op == "^" else ""

        msg = f"{package_name}{op}{version}"
        result.append(msg)

    result = sorted(result)
    print("\n".join(result))


if __name__ == "__main__":
    convert()