How to Install Python from command line and Docker on Windows

Introduction

We will see how we can install Python 3.7 on Windows without UI. i.e. from command line

Install Python 3.7.9

First we will run powershell. And run following commands on powershell console.

$url = ('https://www.python.org/ftp/python/3.7.9/python-3.7.9-amd64.exe'); \
	Write-Host ('Downloading {0} ...' -f $url); \
	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
	Invoke-WebRequest -Uri $url -OutFile 'python.exe'; \
	\
	Write-Host 'Installing ...'; \
	Start-Process python.exe -Wait \
		-ArgumentList @( \
			'/quiet', \
			'InstallAllUsers=1', \
			'TargetDir=C:\Python37', \
			'PrependPath=1', \
			'Shortcuts=0', \
			'Include_doc=0', \
			'Include_pip=0', \
			'Include_test=0' \
		); \
	\

Update Path

$env:PATH = [Environment]::GetEnvironmentVariable('PATH', [EnvironmentVariableTarget]::Machine); \
	\
	Write-Host 'Verifying install ...'; \
	Write-Host '  python --version'; python --version; \
	\
	Write-Host 'Removing ...'; \
	Remove-Item python.exe -Force; \
	\
	Write-Host 'Complete.'

Install pip and verify its hash

ENV PYTHON_GET_PIP_SHA256 421ac1d44c0cf9730a088e337867d974b91bdce4ea2636099275071878cc189e

RUN Write-Host ('Downloading get-pip.py...'); \
	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
	Invoke-WebRequest -Uri "https://github.com/pypa/get-pip/raw/d59197a3c169cef378a22428a3fa99d33e080a5d/get-pip.py" -OutFile 'get-pip.py'; \
	Write-Host ('Verifying sha256 ...'); \
	if ((Get-FileHash 'get-pip.py' -Algorithm sha256).Hash -ne "421ac1d44c0cf9730a088e337867d974b91bdce4ea2636099275071878cc189e") { \
		Write-Host 'FAILED!'; \
		exit 1; \
	}; \
	\
	Write-Host ('Installing pip ...'); \
	python get-pip.py \
		--disable-pip-version-check \
		--no-cache-dir \
	; \
	Remove-Item get-pip.py -Force; \
	\
	Write-Host 'Verifying pip install ...'; \
	pip --version; \
	\
	Write-Host 'Complete.'

Install Python via Dockerfile

FROM microsoft/windowsservercore:ltsc2016

SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
RUN New-Item C:/temp -ItemType Directory; \
  New-Item C:/data -ItemType Directory;
WORKDIR C:/temp

ENV PYTHON_VERSION 3.7.9
ENV PYTHON_RELEASE 3.7.9

RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f $env:PYTHON_RELEASE, $env:PYTHON_VERSION); \
	Write-Host ('Downloading {0} ...' -f $url); \
	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
	Invoke-WebRequest -Uri $url -OutFile 'python.exe'; \
	\
	Write-Host 'Installing ...'; \
# https://docs.python.org/3.7/using/windows.html#installing-without-ui
	Start-Process python.exe -Wait \
		-ArgumentList @( \
			'/quiet', \
			'InstallAllUsers=1', \
			'TargetDir=C:\Python37', \
			'PrependPath=1', \
			'Shortcuts=0', \
			'Include_doc=0', \
			'Include_pip=0', \
			'Include_test=0' \
		); \
	\
#the installer updated PATH, so we should refresh our local value
	$env:PATH = [Environment]::GetEnvironmentVariable('PATH', [EnvironmentVariableTarget]::Machine); \
	\
	Write-Host 'Verifying install ...'; \
	Write-Host '  python --version'; python --version; \
	\
	Write-Host 'Removing ...'; \
	Remove-Item python.exe -Force; \
	\
	Write-Host 'Complete.'

# https://github.com/pypa/get-pip
ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/d59197a3c169cef378a22428a3fa99d33e080a5d/get-pip.py
ENV PYTHON_GET_PIP_SHA256 421ac1d44c0cf9730a088e337867d974b91bdce4ea2636099275071878cc189e

RUN Write-Host ('Downloading get-pip.py ({0}) ...' -f $env:PYTHON_GET_PIP_URL); \
	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
	Invoke-WebRequest -Uri $env:PYTHON_GET_PIP_URL -OutFile 'get-pip.py'; \
	Write-Host ('Verifying sha256 ({0}) ...' -f $env:PYTHON_GET_PIP_SHA256); \
	if ((Get-FileHash 'get-pip.py' -Algorithm sha256).Hash -ne $env:PYTHON_GET_PIP_SHA256) { \
		Write-Host 'FAILED!'; \
		exit 1; \
	}; \
	\
	Write-Host ('Installing pip ...'); \
	python get-pip.py \
		--disable-pip-version-check \
		--no-cache-dir \
	; \
	Remove-Item get-pip.py -Force; \
	\
	Write-Host 'Verifying pip install ...'; \
	pip --version; \
	\
	Write-Host 'Complete.'

Hope you enjoy reading this post.