How do I install python3 and python3-pip on an alpine based image (without using a python image)?
$ apk add --update python3.8 python3-pip
ERROR: unsatisfiable constraints:
python3-pip (missing):
required by: world[python3-pip]
python3.8 (missing):
required by: world[python3.8]
This is what I use in a Dockerfile for an alpine image:
# Install python/pip
ENV PYTHONUNBUFFERED=1
RUN apk add --update --no-cache python3 && ln -sf python3 /usr/bin/python
RUN python3 -m ensurepip
RUN pip3 install --no-cache --upgrade pip setuptools
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.10/community/x86_64/APKINDEX.tar.gz: No such file or directory ERROR: unsatisfiable constraints: python3 (missing): required by: world[python3]
python3 -m ensurepip exists.
RUN apk add --update --no-cache python3 py3-pip. Running pip -V inside of this container shows setuptools installed. Trying to run the pip3 install will result in an externally managed environment error
pip switch, so it should go into the pip command line: pip instal --break-system-packages ....Take a look at the alpine package repo: https://pkgs.alpinelinux.org/packages
So what you are looking for are the python3 and py3-pip packages.
A suitable command to use inside a dockerfile/etc. would be:
apk add --no-cache python3 py3-pip
Explanation of the --no-cache flag
Note however, that you need to add the community repository since py3-pip is not present on main.
python-dev package for 3?
python3-dev according to: Alpine Package search: python3-dev*
3.12 pkgs.alpinelinux.org/…
importlib.metadata.PackageNotFoundError: pip while trying to run e.g. pip3 install and you are using alpine:3.13 docker image, try upgrading to alpine:3.14.
Additional option is to build python during image build:
FROM alpine:latest
# you can specify python version during image build
ARG PYTHON_VERSION=3.9.9
# install build dependencies and needed tools
RUN apk add \
wget \
gcc \
make \
zlib-dev \
libffi-dev \
openssl-dev \
musl-dev
# download and extract python sources
RUN cd /opt \
&& wget https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tgz \
&& tar xzf Python-${PYTHON_VERSION}.tgz
# build python and remove left-over sources
RUN cd /opt/Python-${PYTHON_VERSION} \
&& ./configure --prefix=/usr --enable-optimizations --with-ensurepip=install \
&& make install \
&& rm /opt/Python-${PYTHON_VERSION}.tgz /opt/Python-${PYTHON_VERSION} -rf
# rest of the image, python3 and pip3 commands will be available
This snippet downloads and builds python of specified version from sources (together with pip). It may be an overkill but sometimes it may come in handy.
instead of python3-pip install py3-pip
apk add --update python3 py3-pip
You can try this command:
apk add python3
You may use the python official image which offers alpine tags as well. You will probably get the most state-of-the-art python install:
e.g.:
FROM python:3-alpine
FROM python:3.9-alpine:edge. But this throws invalid reference format. I require alpine edge because librdkafka 2.0.2 v is available only in alpine edge. Is there any other way to solve this error?
It looks like you're trying to install a specific minor version of Python3 (3.8), you can do this in Alpine by using semver like this which will install a version of python3>=3.8.0 <3.9.0-0:
apk add python3=~3.8
For those of you who have tried the above
apk add py3-pip
and get
ERROR: unable to select packages:
py3-pip (no such package):
required by: world[py3-pip]
Check /etc/apk/repositories and ensure that the line that ends in /community is not commented out (starts with a #). If it is, remove the #, save, run apk update, and retry the installation.
Alpine linux container or bare installation, simple way as root:
apk add python3
apk add py3-setuptools
apk add py3-pip
You can try to use --update or --no-cache too.
I had to install python in an air gap network so I couldn't run apk add. Here's how I got required packages inside an online alpine container:
apk fetch python3 py3-pip libbz2 libexpat libffi gdbm mpdecimal libpanelw readline \
sqlite-libs py3-setuptools libgcc libstdc++ py3-packaging py3-parsing
And my Dockerfile looks like this:
ENV PYTHONUNBUFFERED=1
COPY ./*.apk .
RUN apk add --allow-untrusted --no-network libgcc* libstdc++* gdbm* libbz2* \
libexpat* libffi* libpanel* mpdecimal* \
readline* sqlite* \
python3-3.11.4-r0.apk py3-parsing* py3-packaging* py3-setuptools* py3-pip-23.1.2-r0.apk && \
rm *.apk && \
ln -sf python3 /usr/bin/python
And the dependency hell got resolved.
For those looking to install pip in Alpine Linux you might not get py3-pip to install via apk. After you install python: apk add python3, then you run python -m ensurepip. That's what worked for me.
Good luck!
python -m pip --version.I tried many answers from different sources, eventually I copied the repository file and checked the naming convention by extracting the compressed file
wget https://dl-cdn.alpinelinux.org/alpine/edge/main/aarch64/APKINDEX.tar.gz
tar -xvf APKINDEX.tar.gz
cat APKINDEX | grep python3
and the found the line.
D:python3 python3~3.11
and the following worked
apk --update --no-cache add python3~3.11 --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main
You checkout docker hub, for an image of specific python and alpine, if you want do not want to use the latest version of python or alpine everytime. https://hub.docker.com/_/python/tags
example : docker pull python:3.11.9-alpine3.18 | you can use this base image to have python 3.11.9 and alpine 3.18
Only solution that worked for me
(running docker on linux)
sudo nano /etc/docker/daemon.json
Add the following
{
"dns": ["8.8.8.8"]
}
Restart docker
sudo service docker restart
