pypi-resolver

This tool resolves Python dependencies by using pip. It can be executed as a CLI tool, or it can be deployed as a Flask API. It accepts as input any string that can be resolved by pip.

Command Line Arguments

You should always use at least one of -f or -i

usage: Resolve dependencies of PyPI packages [-h] [-i INPUT] [-o OUTPUT_FILE] [-f]

optional arguments:
  -h, --help            show this help message and exit
  -i INPUT, --input INPUT
                        Input should be a string of a package name or the names of multiple
                        packages separated by spaces. Examples: 'django' or
                        'django=3.1.3' or 'django wagtail'
  -o OUTPUT_FILE, --output-file OUTPUT_FILE
                        File to save the output
  -f, --flask           Deploy flask api

Output Format

The tool returns a JSON object. If it managed to resolve the package successfully, then it returns a JSON in the following format. Note that in packages key, there is also the package that was given as input.

{
  "input": "wagtail",
  "status": true,
  "packages": {
    "django-taggit": {
      "package": "django-taggit",
      "version": "1.3.0"
    },
    "jdcal": {
      "package": "jdcal",
      "version": "1.4.1"
    },
    "Pillow": {
      "package": "Pillow",
      "version": "8.0.1"
    },
    "pytz": {
      "package": "pytz",
      "version": "2020.4"
    },
    ...
}

Otherwise, it produces a JSON with an error message.

{
    "input": "bbq",
    "status": false,
    "error": "ERROR: Could not find a version that satisfies the requirement
    bbq (from versions: none)"
}

Micro-service

Deploy a micro-service that exposes a REST API for resolving Python dependencies.

docker build -f Dockerfile -t pypi-resolver-api .
docker run -p 5001:5000 pypi-resolver-api

• Request format

url: http://localhost:5001/dependencies/{packageName}/{version}

Note: The {version} path parameter is optional

• Example request using curl:

curl "http://localhost:5001/dependencies/django/3.1.3"

• Output format:

[
 {
   "product": "Django",
   "version": "3.1.3"
 },
 {
   "product": "sqlparse",
   "version": "0.4.2"
 },
 {
   "product": "asgiref",
   "version": "3.4.1"
 },
 {
   "product": "pytz",
   "version": "2021.1"
 }
]