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    Download packages from:

    - PyPI (and other indexes) using requirement specifiers.
    - VCS project urls.
    - Local project directories.
    - Local or remote source archives.

    pip also supports downloading from "requirements files", which provide
    an easy way to specify a whole environment to be downloaded.
    tdownloads%
      %prog [options] <requirement specifier> [package-index-options] ...
      %prog [options] -r <requirements file> [package-index-options] ...
      %prog [options] [-e] <vcs project url> ...
      %prog [options] [-e] <local project path> ...
      %prog [options] <archive url/path> ...sDownload packages.c
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--platformtplatforms`Only download wheels compatible with <platform>. Defaults to the platform of the running system.s--python-versiontpython_versions&Only download wheels compatible with Python interpreter version <version>. If not specified, then the current system interpreter minor version is used. A major version (e.g. '2') can be specified to match all minor revs of that major version.  A minor version (e.g. '34') can also be specified.s--implementationtimplementations�Only download wheels compatible with Python implementation <implementation>, e.g. 'pp', 'jy', 'cp',  or 'ip'. If not specified, then the current interpreter implementation is used.  Use 'py' to force implementation-agnostic wheels.s--abitabis�Only download wheels compatible with Python abi <abi>, e.g. 'pypy_41'.  If not specified, then the current interpreter abi tag is used.  Generally you will need to specify --implementation, --platform, and --python-version when using this option.i(tsuperR
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