Recommendation for installing Python modules: pip or Macports

[Bill Deegan]

docker's a heavyweight solution.
Use Python's virtualenv.
Then you can pip install whatever and not corrupt your macports install.


On Tue, Dec 6, 2022 at 7:27 AM David Herron <david at davidherron.com> wrote:

> Let me recommend Docker.  You can use the Python base image, to select
> your preferred Python version, and then run pip or pip3 (as appropriate) in
> the Dockerfile.  This way installed dependencies are neatly encapsulated,
> they do not pollute your host environment, and you have documentation of
> how the Python environment is configured.
>
> I demonstrate this in a blog post about OpenADR development using
> OpenLEADR:
> https://techsparx.com/energy-system/openadr/openleadr-docker.html
>
> A simplified Dockerfile would be:
>
> FROM python:3
> VOLUME /setup
> VOLUME /app
> RUN apt-get update && \
>         apt-get upgrade -y && \
>         apt-get install -y build-essential curl locales
> COPY requirements.txt /setup/requirements.txt
> RUN pip3 install -r /setup/requirements.txt
> python3 /app/app.py
>
>
> Then, to build it
>
> docker build --tag your-name/your-application-name:latest .
>
> Then it can be launched using a Docker Compose file
>
> services:
>   app:
>     image: your-name/your-application-name:latest
>     volumes:
>       - ./app-source-directory:/app/
>     networks:
>       - adrnet
>     environment:
>       - PYTHONPATH=... other directories ...:/app
>     ports:
>       - 8080:8080
>
>
> And executed with the command:
>
> docker compose up
>
> On your terminal will be logging output.  You can install more services
> like databases in the Docker Compose file and manage them all this way.
> The source code is dynamically mounted into the running container.  That
> means you can edit as you wish.  My blog post demonstrates using Nodemon to
> watch the source directory and to automatically restart Python if files
> change.
>
> + David Herron
>
>
>
> On Tue, Dec 6, 2022 at 6:53 AM Thomas Gederberg <tgederberg at sbcglobal.net>
> wrote:
>
>> It appears that you can either install Python modules (py310-matplotlib,
>> py310-numpy, etc) either directly from MacPorts or you can install pip (for
>> example py30-pip) with MacPorts and then use pip to install the modules.
>>
>> Is there a recommendation on which way to go?
>>
>> Tom Gederberg
>>
>
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