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-# Sample script to install Python and pip under Windows
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-# Authors: Olivier Grisel, Jonathan Helmus, Kyle Kastner, and Alex Willmer
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-# License: CC0 1.0 Universal: http://creativecommons.org/publicdomain/zero/1.0/
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-
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-$MINICONDA_URL = "http://repo.continuum.io/miniconda/"
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-$BASE_URL = "https://www.python.org/ftp/python/"
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-$GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
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-$GET_PIP_PATH = "C:\get-pip.py"
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-
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-$PYTHON_PRERELEASE_REGEX = @"
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-(?x)
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-(?<major>\d+)
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-\.
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-(?<minor>\d+)
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-\.
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-(?<micro>\d+)
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-(?<prerelease>[a-z]{1,2}\d+)
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-"@
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-
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-
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-function Download ($filename, $url) {
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- $webclient = New-Object System.Net.WebClient
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-
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- $basedir = $pwd.Path + "\"
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- $filepath = $basedir + $filename
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- if (Test-Path $filename) {
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- Write-Host "Reusing" $filepath
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- return $filepath
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- }
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-
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- # Download and retry up to 3 times in case of network transient errors.
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- Write-Host "Downloading" $filename "from" $url
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- $retry_attempts = 2
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- for ($i = 0; $i -lt $retry_attempts; $i++) {
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- try {
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- $webclient.DownloadFile($url, $filepath)
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- break
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- }
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- Catch [Exception]{
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- Start-Sleep 1
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- }
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- }
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- if (Test-Path $filepath) {
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- Write-Host "File saved at" $filepath
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- } else {
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- # Retry once to get the error message if any at the last try
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- $webclient.DownloadFile($url, $filepath)
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- }
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- return $filepath
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-}
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-
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-
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-function ParsePythonVersion ($python_version) {
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- if ($python_version -match $PYTHON_PRERELEASE_REGEX) {
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- return ([int]$matches.major, [int]$matches.minor, [int]$matches.micro,
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- $matches.prerelease)
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- }
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- $version_obj = [version]$python_version
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- return ($version_obj.major, $version_obj.minor, $version_obj.build, "")
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-}
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-
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-
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-function DownloadPython ($python_version, $platform_suffix) {
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- $major, $minor, $micro, $prerelease = ParsePythonVersion $python_version
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-
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- if (($major -le 2 -and $micro -eq 0) `
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- -or ($major -eq 3 -and $minor -le 2 -and $micro -eq 0) `
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- ) {
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- $dir = "$major.$minor"
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- $python_version = "$major.$minor$prerelease"
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- } else {
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- $dir = "$major.$minor.$micro"
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- }
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-
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- if ($prerelease) {
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- if (($major -le 2) `
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- -or ($major -eq 3 -and $minor -eq 1) `
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- -or ($major -eq 3 -and $minor -eq 2) `
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- -or ($major -eq 3 -and $minor -eq 3) `
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- ) {
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- $dir = "$dir/prev"
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- }
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- }
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-
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- if (($major -le 2) -or ($major -le 3 -and $minor -le 4)) {
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- $ext = "msi"
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- if ($platform_suffix) {
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- $platform_suffix = ".$platform_suffix"
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- }
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- } else {
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- $ext = "exe"
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- if ($platform_suffix) {
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- $platform_suffix = "-$platform_suffix"
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- }
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- }
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-
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- $filename = "python-$python_version$platform_suffix.$ext"
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- $url = "$BASE_URL$dir/$filename"
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- $filepath = Download $filename $url
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- return $filepath
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-}
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-
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-
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-function InstallPython ($python_version, $architecture, $python_home) {
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- Write-Host "Installing Python" $python_version "for" $architecture "bit architecture to" $python_home
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- if (Test-Path $python_home) {
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- Write-Host $python_home "already exists, skipping."
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- return $false
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- }
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- if ($architecture -eq "32") {
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- $platform_suffix = ""
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- } else {
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- $platform_suffix = "amd64"
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- }
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- $installer_path = DownloadPython $python_version $platform_suffix
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- $installer_ext = [System.IO.Path]::GetExtension($installer_path)
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- Write-Host "Installing $installer_path to $python_home"
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- $install_log = $python_home + ".log"
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- if ($installer_ext -eq '.msi') {
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- InstallPythonMSI $installer_path $python_home $install_log
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- } else {
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- InstallPythonEXE $installer_path $python_home $install_log
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- }
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- if (Test-Path $python_home) {
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- Write-Host "Python $python_version ($architecture) installation complete"
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- } else {
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- Write-Host "Failed to install Python in $python_home"
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- Get-Content -Path $install_log
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- Exit 1
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- }
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-}
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-
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-
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-function InstallPythonEXE ($exepath, $python_home, $install_log) {
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- $install_args = "/quiet InstallAllUsers=1 TargetDir=$python_home"
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- RunCommand $exepath $install_args
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-}
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-
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-
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-function InstallPythonMSI ($msipath, $python_home, $install_log) {
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- $install_args = "/qn /log $install_log /i $msipath TARGETDIR=$python_home"
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- $uninstall_args = "/qn /x $msipath"
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- RunCommand "msiexec.exe" $install_args
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- if (-not(Test-Path $python_home)) {
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- Write-Host "Python seems to be installed else-where, reinstalling."
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- RunCommand "msiexec.exe" $uninstall_args
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- RunCommand "msiexec.exe" $install_args
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- }
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-}
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-
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-function RunCommand ($command, $command_args) {
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- Write-Host $command $command_args
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- Start-Process -FilePath $command -ArgumentList $command_args -Wait -Passthru
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-}
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-
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-
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-function InstallPip ($python_home) {
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- $pip_path = $python_home + "\Scripts\pip.exe"
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- $python_path = $python_home + "\python.exe"
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- if (-not(Test-Path $pip_path)) {
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- Write-Host "Installing pip..."
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- $webclient = New-Object System.Net.WebClient
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- $webclient.DownloadFile($GET_PIP_URL, $GET_PIP_PATH)
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- Write-Host "Executing:" $python_path $GET_PIP_PATH
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- & $python_path $GET_PIP_PATH
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- } else {
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- Write-Host "pip already installed."
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- }
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-}
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-
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-
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-function DownloadMiniconda ($python_version, $platform_suffix) {
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- if ($python_version -eq "3.4") {
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- $filename = "Miniconda3-3.5.5-Windows-" + $platform_suffix + ".exe"
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- } else {
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- $filename = "Miniconda-3.5.5-Windows-" + $platform_suffix + ".exe"
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- }
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- $url = $MINICONDA_URL + $filename
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- $filepath = Download $filename $url
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- return $filepath
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-}
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-
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-
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-function InstallMiniconda ($python_version, $architecture, $python_home) {
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- Write-Host "Installing Python" $python_version "for" $architecture "bit architecture to" $python_home
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- if (Test-Path $python_home) {
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- Write-Host $python_home "already exists, skipping."
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- return $false
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- }
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- if ($architecture -eq "32") {
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- $platform_suffix = "x86"
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- } else {
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- $platform_suffix = "x86_64"
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- }
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- $filepath = DownloadMiniconda $python_version $platform_suffix
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- Write-Host "Installing" $filepath "to" $python_home
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- $install_log = $python_home + ".log"
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- $args = "/S /D=$python_home"
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- Write-Host $filepath $args
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- Start-Process -FilePath $filepath -ArgumentList $args -Wait -Passthru
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- if (Test-Path $python_home) {
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- Write-Host "Python $python_version ($architecture) installation complete"
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- } else {
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- Write-Host "Failed to install Python in $python_home"
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- Get-Content -Path $install_log
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- Exit 1
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- }
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-}
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-
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-
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-function InstallMinicondaPip ($python_home) {
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- $pip_path = $python_home + "\Scripts\pip.exe"
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- $conda_path = $python_home + "\Scripts\conda.exe"
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- if (-not(Test-Path $pip_path)) {
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- Write-Host "Installing pip..."
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- $args = "install --yes pip"
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- Write-Host $conda_path $args
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- Start-Process -FilePath "$conda_path" -ArgumentList $args -Wait -Passthru
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- } else {
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- Write-Host "pip already installed."
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- }
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-}
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-
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-function main () {
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- InstallPython $env:PYTHON_VERSION $env:PYTHON_ARCH $env:PYTHON
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- InstallPip $env:PYTHON
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-}
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-
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-main
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Kentaro Wada