2011-06-01 20:42:49 +02:00
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:mod:`packaging.pypi` --- Interface to projects indexes
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=======================================================
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.. module:: packaging.pypi
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:synopsis: Low-level and high-level APIs to query projects indexes.
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Packaging queries PyPI to get information about projects or download them. The
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low-level facilities used internally are also part of the public API designed to
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be used by other tools.
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The :mod:`packaging.pypi` package provides those facilities, which can be
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used to access information about Python projects registered at indexes, the
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main one being PyPI, located ad http://pypi.python.org/.
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There is two ways to retrieve data from these indexes: a screen-scraping
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interface called the "simple API", and XML-RPC. The first one uses HTML pages
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located under http://pypi.python.org/simple/, the second one makes XML-RPC
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requests to http://pypi.python.org/pypi/. All functions and classes also work
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with other indexes such as mirrors, which typically implement only the simple
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interface.
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Packaging provides a class that wraps both APIs to provide full query and
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download functionality: :class:`packaging.pypi.client.ClientWrapper`. If you
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want more control, you can use the underlying classes
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:class:`packaging.pypi.simple.Crawler` and :class:`packaging.pypi.xmlrpc.Client`
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to connect to one specific interface.
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:mod:`packaging.pypi.client` --- High-level query API
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=====================================================
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.. module:: packaging.pypi.client
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:synopsis: Wrapper around :mod;`packaging.pypi.xmlrpc` and
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:mod:`packaging.pypi.simple` to query indexes.
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This module provides a high-level API to query indexes and search
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for releases and distributions. The aim of this module is to choose the best
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way to query the API automatically, either using XML-RPC or the simple index,
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with a preference toward the latter.
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.. class:: ClientWrapper
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Instances of this class will use the simple interface or XML-RPC requests to
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query indexes and return :class:`packaging.pypi.dist.ReleaseInfo` and
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:class:`packaging.pypi.dist.ReleasesList` objects.
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.. method:: find_projects
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.. method:: get_release
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.. method:: get_releases
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2011-06-19 19:23:48 +02:00
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:mod:`packaging.pypi.base` --- Base class for index crawlers
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============================================================
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.. module:: packaging.pypi.base
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:synopsis: Base class used to implement crawlers.
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.. class:: BaseClient(prefer_final, prefer_source)
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Base class containing common methods for the index crawlers or clients. One
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method is currently defined:
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.. method:: download_distribution(requirements, temp_path=None, \
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prefer_source=None, prefer_final=None)
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Download a distribution from the last release according to the
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requirements. If *temp_path* is provided, download to this path,
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otherwise, create a temporary directory for the download. If a release is
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found, the full path to the downloaded file is returned.
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