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# Author: Lisandro Dalcin
# Contact: dalcinl@gmail.com
# Credits: Olivier Grisel and Kyle Kastner
$PYTHON_BASE_URL = "https://www.python.org/ftp/python/"
$GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
$GET_PIP_PATH = "C:\get-pip.py"
$ScriptDir = Split-Path $MyInvocation.MyCommand.Path -Parent
. "$ScriptDir\download.ps1"
$DOWNLOADS = "C:\Downloads\Python"
function InstallPython ($python_version, $architecture, $python_home) {
Write-Host "Installing Python $python_version ($architecture-bit) to $python_home"
if (Test-Path $python_home) {
Write-Host $python_home "already exists, skipping."
return
}
$py_major = $python_version[0]; $py_minor = $python_version[2]
$installer_exe = ($py_major + $py_minor) -as [int] -ge 35
if ($installer_exe) {
$arch_suffix = @{"32"="";"64"="-amd64"}[$architecture]
$filename = "python-" + $python_version + $arch_suffix + ".exe"
} else {
$arch_suffix = @{"32"="";"64"=".amd64"}[$architecture]
$filename = "python-" + $python_version + $arch_suffix + ".msi"
}
$url = $PYTHON_BASE_URL + $python_version + "/" + $filename
$filepath = Download $url $filename $DOWNLOADS
Write-Host "Installing" $filename "to" $python_home
if ($installer_exe) {
$prog = $filepath
$args = "/quiet TargetDir=$python_home"
} else {
$prog = "msiexec.exe"
$args = "/quiet /qn /i $filepath TARGETDIR=$python_home"
}
Write-Host "Executing:" $prog $args
Start-Process -FilePath $prog -ArgumentList $args -Wait
Write-Host "Python $python_version ($architecture-bit) installation complete"
}
function InstallPip ($python_home) {
$python_path = Join-Path $python_home "python.exe"
$pip_path = Join-Path $python_home "Scripts\pip.exe"
if (Test-Path $pip_path) {
Write-Host "Upgrading pip"
$prog = $python_path
$args = "-m pip.__main__ install --upgrade pip"
Write-Host "Executing:" $prog $args
Start-Process -FilePath $prog -ArgumentList $args -Wait
Write-Host "pip upgrade complete"
} else {
Write-Host "Installing pip"
$webclient = New-Object System.Net.WebClient
$webclient.DownloadFile($GET_PIP_URL, $GET_PIP_PATH)
$prog = $python_path
$args = "$GET_PIP_PATH"
Write-Host "Executing:" $prog $args
Start-Process -FilePath $prog -ArgumentList $args -Wait
Write-Host "pip installation complete"
}
}
function InstallPipPackage ($python_home, $package) {
$pip_path = Join-Path $python_home "Scripts\pip.exe"
Write-Host "Installing/Upgrading $package"
$args = "install --upgrade $package"
Write-Host "Executing:" $pip_path $args
Start-Process -FilePath $pip_path -ArgumentList $args -Wait
Write-Host "$package install/upgrade complete"
}
function main () {
InstallPython $env:PYTHON_VERSION $env:PYTHON_ARCH $env:PYTHON
InstallPip $env:PYTHON
InstallPipPackage $env:PYTHON setuptools
InstallPipPackage $env:PYTHON wheel
}
main
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