ModuleNotFoundError: No module named '_sqlite3' on a Python Flask application

Questions / Help Build debugging
1

When I deploy my application (Python + Flask), I have a module import error:

2022-12-19T23:04:12.794 app[83761953] cdg [info] File "/workspace/app.py", line 18, in <module>
2022-12-19T23:04:12.794 app[83761953] cdg [info] from db import Database
2022-12-19T23:04:12.794 app[83761953] cdg [info] File "/workspace/db.py", line 2, in <module>
2022-12-19T23:04:12.794 app[83761953] cdg [info] import sqlite3
2022-12-19T23:04:12.794 app[83761953] cdg [info] File "/layers/paketo-buildpacks_cpython/cpython/lib/python3.10/sqlite3/__init__.py", line 57, in <module>
2022-12-19T23:04:12.794 app[83761953] cdg [info] from sqlite3.dbapi2 import *
2022-12-19T23:04:12.794 app[83761953] cdg [info] File "/layers/paketo-buildpacks_cpython/cpython/lib/python3.10/sqlite3/dbapi2.py", line 27, in <module>
2022-12-19T23:04:12.794 app[83761953] cdg [info] from _sqlite3 import *
2022-12-19T23:04:12.794 app[83761953] cdg [info] ModuleNotFoundError: No module named '_sqlite3'

I have tried to use the paketobuildpacks/builder:full instead of paketobuildpacks/builder:base as suggested here, but it doesn’t fix the problem.

Any idea?

3

Hi, new user of Fly.io,
very same problem.
PS : Sorry for the deleted post (wrong click).

4

Looks like somes have the same issue.

5

This situation is a shame, it seems that the fly.io team really doesn’t care about Python users.

BTW use Heroku buildpack instead of the Paketo one, editing your fly.toml file after generation.

[build]
  builder = "heroku/buildpacks:latest"
1 Like
6

We don’t have anyone working on Python support yet, it’s entirely community driven.

The Heroku buildpack may work, but it’ll be very slow.

Your best bet for Flask is to write a Dockerfile. We’ll happily build and deploy a Dockerfile. There are probably hundreds of good Flask Dockerfile examples on the internet.

7

As you know, Python is a great and one of the most used programming language so… why so few love from the fly team ?

The Heroku buildpack works fine for me on fly, not slow…

8

Thanks! It works perfectly! :smiley: