show.py 文件源码

def search_packages_info(query):
    """
    Gather details from installed distributions. Print distribution name,
    version, location, and installed files. Installed files requires a
    pip generated 'installed-files.txt' in the distributions '.egg-info'
    directory.
    """
    installed_packages = dict(
        [(p.project_name.lower(), p) for p in pkg_resources.working_set])
    for name in query:
        normalized_name = name.lower()
        if normalized_name in installed_packages:
            dist = installed_packages[normalized_name]
            package = {
                'name': dist.project_name,
                'version': dist.version,
                'location': dist.location,
                'requires': [dep.project_name for dep in dist.requires()],
            }
            filelist = os.path.join(
                       dist.location,
                       dist.egg_name() + '.egg-info',
                       'installed-files.txt')
            if os.path.isfile(filelist):
                package['files'] = filelist
            yield package