Powershell installation of python and pyrax on a fresh Rackspace Windows Server instance

pyrax_install.ps1

##
## NOTE: This script is a walkthrough and may not work if run directly.
##
## If downloaded to run, make sure to set 
##
## Set-ExecutionPolicy RemoteSigned
##

# Create a downloader via .NET
$notwget = New-Object System.Net.WebClient

# We'll download and install
# - the Python 2.7 64-bit msi
# - ez_setup.py
# - get-pip.py

# Download and install Python 2.7
$notwget.DownloadFile("http://www.python.org/ftp/python/2.7.6/python-2.7.6.amd64.msi", "$pwd\python-2.7.6.amd64.msi")
# Run the installer in non-interactive installation mode
& msiexec /i .\python-2.7.6.amd64.msi ALLUSERS=1

# Install the latest and greatest version of Setuptools
$notwget.DownloadFile("https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py", "$pwd\ez_setup.py")
# Rather than muck with PATH and PYTHONPATH, simply did these installs directly
& "C:\Python27\python.exe" .\ez_setup.py

# Get pip!
$notwget.DownloadFile("https://raw.github.com/pypa/pip/master/contrib/get-pip.py", "$pwd\get-pip.py")
& "C:\Python27\python.exe" .\get-pip.py

# Because of an upstream issue in pbr, we install an old version of pbr first.
& "C:\Python27\Scripts\pip.exe" install pbr==0.5.21
# Now can install pyrax
& "C:\Python27\Scripts\pip.exe" install pyrax