Using Python 3 with Poetry

codegabru — Sat, 02 May 2020 10:36:41 +0000

This was originally posted on my Hashnode blog.

Install Poetry:

curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python3

The only problem is that for some reason Poetry doesn’t use Python version 3 by default for any project that you create using it and it doesn't run virtual environment shell using Python 3 even if the min required version of python is set to 3.x for the project. See issue for more details.

A quick, safe and dirty (because you will have to do this every time you update Poetry version) way to fix this is given below.

Open ~/.poetry/bin/poetry in editor of your choice. I’ll use nano :

nano ~/.poetry/bin/poetry

Top line of the file will be:

#!/usr/bin/env python

Update it to:

#!/usr/bin/env python3

Now Poetry should work as expected i.e run virtual environment shell using Python 3 etc.

Note: I think this will probably break things when you set min required version of Python to 2.x for your project. I have not tested this for Python 2. Python 2 has been deprecated anyway. Let me know in the comments if there is a better way to do it.

How do big companies effectively store and serve video (over a CDN) - I don't get the math

codegabru — Tue, 28 Apr 2020 14:42:02 +0000

I am building a course hosting website - I want my users to be able to upload videos which their students will stream. This is how I plan to do it but I don't get the math behind this. I'm surely missing something.

How do I store the video? - AFAIK rn I can use the cheapest object storage anything like S3, GCP etc. = $0.005/GB being the cheapest option.
How do I serve those videos? AFAIK rn I can use a CDN that will cache the videos on the edge and serve it to the students = ~ 0.05/GB being the cheapest option.

Now let's suppose a teacher uploads a 30 min 1080p video that 10000 students will watch.

Size of vid ~ 1.5GB
Object storage cost = 0.0075

As 10k students will watch it - then data that will go through the CDN = 15000GB

At that 0.05/GB the CDN pricing will be - 15000GB x 0.05/GB = $750

This is unaffordable, obviously, for anyone hosting and serving the video.

There is definitely something that I'm missing here (almost ready to feel dumb after this is solved). Or is this how much it actually costs?

UPDATE: Cloudflare Stream seems to cut the price to $350 for our case. Still pretty expensive.

DEV Community: codegabru

Using Python 3 with Poetry

How do big companies effectively store and serve video (over a CDN) - I don't get the math