#!/usr/bin/python3

import apt_pkg

apt_pkg.init()

sources = apt_pkg.SourceList()
sources.read_main_list()

cache = apt_pkg.Cache()
depcache = apt_pkg.DepCache(cache)
pkg = cache["libimlib2"]
cand = depcache.get_candidate_ver(pkg)
for f, i in cand.file_list:
    index = sources.find_index(f)
    print(index)
    if index:
        print(index.size)
        print(index.is_trusted)
        print(index.exists)
        print(index.has_packages)
        print(index.archive_uri("some/path"))