This container image is based on Fedora 41 base image. Python’s annual release cycle was adapted for Fedora and Python stack in Fedora 41 upgraded to Python 3.13. By using Fedora’s packages against Python 3.13 while it’s still in development, we can catch critical bugs before the final 3.13.0 release.
Image location: https://hub.docker.com/r/hananmyid/py313
Pull command:
docker pull hananmyid/py313
Docker commands:
FROM quay.io/fedora/fedora-minimal:41 RUN dnf install -y python3 python3-pip; dnf clean all RUN mkdir /app WORKDIR /app ENTRYPOINT ["/usr/bin/python3"]
Create a container instance: docker create --name py313 -it hananmyid/py313 and start it: docker start -ai py313.
You may install Python modules with command: docker exec py313 pip install --no-cache requests. Another way to install Python modules is leveraging the Fedora packages, for example: docker exec py313 dnf -y install python3-requests.
Install the development tools
You may need the development tools to compile from the source:
docker exec py313 dnf -y group install development-tools docker exec py313 dnf -y install python3-devel
Experimental free-threading build
One of biggest changes in this new version of Python interpreter is experimental support for running in a free-threaded mode (PEP-703). The python3.13-freethreading package in Fedora 41 is build of Python that is built with the --disable-gil option.
The freethreading image tag’s Docker commands:
FROM quay.io/fedora/fedora-minimal:41 ENV VIRTUAL_ENV=/opt/py313t ENV PATH="$VIRTUAL_ENV/bin:$PATH" RUN dnf install -y python3.13-freethreading; dnf clean all RUN mkdir /app WORKDIR /app RUN /usr/bin/python3.13t -m venv $VIRTUAL_ENV ENTRYPOINT ["/opt/py313t/bin/python"]
You may create a container instance same as the default Python image, for example: docker create --name py313-t -it hananmyid/py313:freethreading
For testing purpose, bellow the simple CPU-bound code program multi_threaded.py that performs a countdown using two threads in parallel:
import time
from threading import Thread
COUNT = 100000000
def countdown(n):
while n>0:
n -= 1
t1 = Thread(target=countdown, args=(COUNT//2,))
t2 = Thread(target=countdown, args=(COUNT//2,))
start = time.time()
t1.start()
t2.start()
t1.join()
t2.join()
end = time.time()
print('Time taken in seconds -', end - start)
Execute the code: docker exec py313-t python multi_threaded.py
Changelog
- 2024-12-01: update distro packages
- 2024-10-29: Fedora 41 released
- 2024-10-10: update Python 3.13.0
- 2024-09-27: update the freethreading image
- 2024-09-23: update distro packages
- 2024-09-13: add an image tag freethreading for no-GIL option (free threaded CPython)
- 2024-09-10: update Python 3.13.0rc2
- 2024-08-16: update distro packages
- 2024-08-03: update Python 3.13.0rc1