ljgray/requirements-detector

Requirements Detector

Status

About

requirements-detector is a simple Python tool which attempts to find and list the requirements of a Python project.

When run from the root of a Python project, it will try to ascertain which libraries and the versions of those libraries that the project depends on.

It uses the following methods in order, in the root of the project:

1. Parse setup.py (if this is successful, the remaining steps are skipped)
2. Parse pyproject.yoml (if a tool.poetry.dependencies section is found, the remaining steps are skipped)
3. Parse requirements.txt or requirements.pip
4. Parse all *.txt and *.pip files inside a folder called requirements
5. Parse all files in the root folder matching *requirements*.txt or reqs.txt (so for example, pip_requirements.txt would match, as would requirements_common.txt)

Usage

detect-requirements [path]

If path is not specified, the current working directory will be used.

Output

The output will be plaintext, and match that of a pip requirements file, for example:

Django==1.5.2
South>=0.8
anyjson
celery>=2.2,<3

Usage From Python

>>> import os
>>> from requirements_detector import find_requirements
>>> find_requirements(os.getcwd())
[DetectedRequirement:Django==1.5.2, DetectedRequirement:South>=0.8, ...]

If you know the relevant file or directory, you can use from_requirements_txt, from_setup_py or from_requirements_dir directly.

>>> from requirements_detector import from_requirements_txt
>>> from_requirements_txt("/path/to/requirements.txt")
[DetectedRequirement:Django==1.5.2, DetectedRequirement:South>=0.8, ...]