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Edit File: distPackage.py

from package import Package
from reqPackage import ReqPackage

class DistPackage(Package):
    """Wrapper class for pkg_resources.Distribution instances
      :param obj: pkg_resources.Distribution to wrap over
      :param req: optional ReqPackage object to associate this
                  DistPackage with. This is useful for displaying the
                  tree in reverse
    """

def __init__(self, obj, req=None):
        super(DistPackage, self).__init__(obj)
        self.version_spec = None
        self.req = req

def as_requirement(self):
        """Return a ReqPackage representation of this DistPackage"""
        return ReqPackage(self._obj.as_requirement(), dist=self)

def as_required_by(self, req):
        """Return a DistPackage instance associated to a requirement
        This association is necessary for displaying the tree in
        reverse.
        :param ReqPackage req: the requirement to associate with
        :returns: DistPackage instance
        """
        return self.__class__(self._obj, req)

def as_dict(self):
        return {'key': self.key,
                'package_name': self.project_name,
                'installed_version': self.version}

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