관리-도구
편집 파일: found_candidates.cpython-36.pyc
3 �Re� � @ s� d dl Z d dlZd dlmZ d dlmZ d dlmZ erhd dlm Z m Z m Z m Z d dl mZ ddlmZ d d � Zd d � ZG d d� dej�ZdS )� N)�collections_abc)� lru_cache)�MYPY_CHECK_RUNNING)�Callable�Iterator�Optional�Set)� _BaseVersion� )� Candidatec c s6 t � }x*| D ]"}|j|kr q |j|j� |V q W d S )N)�set�version�add)� candidatesZreturned� candidate� r ��/builddir/build/BUILDROOT/alt-python36-pip-20.2.4-5.el8.x86_64/opt/alt/python36/lib/python3.6/site-packages/pip/_internal/resolution/resolvelib/found_candidates.py�_deduplicated_by_version s r c C s& t tj| g|�tjd�dd�}t|�S )az Iterator for ``FoundCandidates``. This iterator is used when the resolver prefers to upgrade an already-installed package. Candidates from index are returned in their normal ordering, except replaced when the version is already installed. Since candidates from index are already sorted by reverse version order, `sorted()` here would keep the ordering mostly intact, only shuffling the already-installed candidate into the correct position. We put the already- installed candidate in front of those from the index, so it's put in front after sorting due to Python sorting's stableness guarentee. r T)�key�reverse)�sorted� itertools�chain�operator� attrgetter�iter)� installedZothersr r r r �_insert_installed s r c @ sF e Zd ZdZdd� Zdd� Zdd� Zdd � Zed d �d d � �Z e Z dS )�FoundCandidatesac A lazy sequence to provide candidates to the resolver. The intended usage is to return this from `find_matches()` so the resolver can iterate through the sequence multiple times, but only access the index page when remote packages are actually needed. This improve performances when suitable candidates are already installed on disk. c C s || _ || _|| _d S )N)� _get_others� _installed�_prefers_installed)�selfZ get_othersr Zprefers_installedr r r �__init__9 s zFoundCandidates.__init__c C s t d��d S )Nz don't do this)�NotImplementedError)r" �indexr r r � __getitem__C s zFoundCandidates.__getitem__c C sD | j s| j� }n,| jr,tj| j g| j� �}nt| j | j� �}t|�S )N)r r r! r r r r )r" r r r r �__iter__J s zFoundCandidates.__iter__c C s t d��d S )Nz don't do this)r$ )r" r r r �__len__T s zFoundCandidates.__len__r )�maxsizec C s | j r| jrdS t| �S )NT)r! r �any)r" r r r �__bool__[ s zFoundCandidates.__bool__N) �__name__� __module__� __qualname__�__doc__r# r& r' r( r r+ � __nonzero__r r r r r 1 s r )r r �pip._vendor.six.movesr �pip._internal.utils.compatr �pip._internal.utils.typingr �typingr r r r � pip._vendor.packaging.versionr �baser r r �Sequencer r r r r �<module> s