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# Sample script to install Python and pip under Windows
# Authors: Olivier Grisel, Jonathan Helmus and Kyle Kastner
# License: CC0 1.0 Universal: http://creativecommons.org/publicdomain/zero/1.0/
$MINICONDA_URL = "https://repo.anaconda.com/miniconda/"
$BASE_URL = "https://www.python.org/ftp/python/"
function DownloadMiniconda ($python_version, $platform_suffix) {
$webclient = New-Object System.Net.WebClient
if ($python_version -match "2.7") {
$filename = "Miniconda2-latest-Windows-" + $platform_suffix + ".exe"
} else {
$filename = "Miniconda3-latest-Windows-" + $platform_suffix + ".exe"
}
$url = $MINICONDA_URL + $filename
$basedir = $pwd.Path + "\"
$filepath = $basedir + $filename
if (Test-Path $filename) {
Write-Host "Reusing" $filepath
return $filepath
}
# Download and retry up to 3 times in case of network transient errors.
Write-Host "Downloading" $filename "from" $url
$retry_attempts = 2
for($i=0; $i -lt $retry_attempts; $i++){
try {
$webclient.DownloadFile($url, $filepath)
break
}
Catch [Exception]{
Start-Sleep 1
}
}
if (Test-Path $filepath) {
Write-Host "File saved at" $filepath
} else {
# Retry once to get the error message if any at the last try
$webclient.DownloadFile($url, $filepath)
}
return $filepath
}
function InstallMiniconda ($python_version, $architecture, $python_home) {
Write-Host "Installing Python" $python_version "for" $architecture "bit architecture to" $python_home
if (Test-Path $python_home) {
Write-Host $python_home "already exists, skipping."
return $false
}
if ($architecture -match "32") {
$platform_suffix = "x86"
} else {
$platform_suffix = "x86_64"
}
$filepath = DownloadMiniconda $python_version $platform_suffix
Write-Host "Installing" $filepath "to" $python_home
$install_log = $python_home + ".log"
$args = "/S /D=$python_home"
Write-Host $filepath $args
Start-Process -FilePath $filepath -ArgumentList $args -Wait -Passthru
if (Test-Path $python_home) {
Write-Host "Python $python_version ($architecture) installation complete"
} else {
Write-Host "Failed to install Python in $python_home"
Get-Content -Path $install_log
Exit 1
}
}
function InstallCondaPackages ($python_home, $spec) {
$conda_path = $python_home + "\Scripts\conda.exe"
$args = "install --yes " + $spec
Write-Host ("conda " + $args)
Start-Process -FilePath "$conda_path" -ArgumentList $args -Wait -Passthru
}
function UpdateConda ($python_home) {
$conda_path = $python_home + "\Scripts\conda.exe"
Write-Host "Updating conda..."
$args = "update --yes conda"
Write-Host $conda_path $args
Start-Process -FilePath "$conda_path" -ArgumentList $args -Wait -Passthru
}
function main () {
InstallMiniconda $env:PYTHON_VERSION $env:PYTHON_ARCH $env:PYTHON
UpdateConda $env:PYTHON
InstallCondaPackages $env:PYTHON "conda-build jinja2 anaconda-client"
}
main
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