pivotal/LicenseFinder

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bin/license_finder_pip.py

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#!/usr/bin/env python

import json
import sys

try:
        from pip._internal.req import parse_requirements
except ImportError:
        from pip.req import parse_requirements
try:
        from pip._internal.download import PipSession
except ImportError:
        from pip.download import PipSession

from pip._vendor import pkg_resources
from pip._vendor.six import print_

requirements = [pkg_resources.Requirement.parse(str(req.req)) for req
                in parse_requirements(sys.argv[1], session=PipSession()) if req.req != None]

transform = lambda dist: {
        'name': dist.project_name,
        'version': dist.version,
        'location': dist.location,
        'dependencies': list(map(lambda dependency: dependency.project_name, dist.requires())),
        }

packages = [transform(dist) for dist
            in pkg_resources.working_set.resolve(requirements)]

print_(json.dumps(packages))