The Python Package Index (PyPI) not only stores the package info, but also the package data if the author of the package wishes to. The distutils command upload pushes the distribution files to PyPI.
The command is invoked immediately after building one or more distribution files. For example, the command
python setup.py sdist bdist_wininst upload
will cause the source distribution and the Windows installer to be uploaded to PyPI. Note that these will be uploaded even if they are built using an earlier invocation of setup.py, but that only distributions named on the command line for the invocation including the upload command are uploaded.
The upload command uses the username, password, and repository URL from the $HOME/.pypirc file (see section The .pypirc file for more on this file).
You can specify another PyPI server with the --repository=*url* option:
python setup.py sdist bdist_wininst upload -r http://example.com/pypi
See section The .pypirc file for more on defining several servers.
You can use the --sign option to tell upload to sign each uploaded file using GPG (GNU Privacy Guard). The gpg program must be available for execution on the system PATH. You can also specify which key to use for signing using the --identity=*name* option.
Other upload options include --repository=*url* or --repository=*section* where url is the url of the server and section the name of the section in $HOME/.pypirc, and --show-response (which displays the full response text from the PyPI server for help in debugging upload problems).