I’d like to announce the release of pip v9.0. This release features: * The 9.x series will be the last pip versions to support Python 2.6. * Support for Requires-Python (will require additional support in setuptools/PyPI) to allow releasing sdists that will be ignored by specific versions of Python (e.g. foobar 5.x doesn’t get downloaded on 2.6). * Ability to pass platform, Python version, implementation, etc into ``pip download`` to download wheels for other platforms. * Add a ``pick check`` command to check the state of installed dependencies. * Add new formats for ``pip list``, including a new columnar layout and a JSON format for ease of scripting. For a full list of changes, see https://pip.pypa.io/en/stable/news/ <https://pip.pypa.io/en/stable/news/>. — Donald Stufft