Command line help

usage: py2pack [-h] [--version] [--proxy PROXY]
               {list,search,show,fetch,generate,help} ...

options:
  -h, --help            show this help message and exit
  --version             show program's version number and exit
  --proxy PROXY         HTTP proxy to use

commands:
  {list,search,show,fetch,generate,help}
    list                list all packages on PyPI
    search              search for packages on PyPI
    show                show metadata for package
    fetch               download package source tarball from PyPI
    generate            generate RPM spec or DEB dsc file for a package
    help                show this help