Deploy Flask Application using python 3.7

Question

I follow this guideline to deploy my python application.
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create-deploy-python-flask.html

I got this bug when use command eb deploy:

2021/09/10 17:26:49.653297 [INFO] extracting /opt/elasticbeanstalk/deployment/app_source_bundle to /var/app/staging/
2021/09/10 17:26:49.653315 [INFO] Running command /bin/sh -c /usr/bin/unzip -q -o /opt/elasticbeanstalk/deployment/app_source_bundle -d /var/app/staging/
2021/09/10 17:26:49.656613 [INFO] finished extracting /opt/elasticbeanstalk/deployment/app_source_bundle to /var/app/staging/ successfully
2021/09/10 17:26:49.657975 [ERROR] An error occurred during execution of command [app-deploy] - [StageApplication]. Stop running the command. Error: chown /var/app/staging/env/lib/python3.7/collections: no such file or directory

2021/09/10 17:26:49.657984 [INFO] Executing cleanup logic
2021/09/10 17:26:49.658080 [INFO] CommandService Response: {"status":"FAILURE","api_version":"1.0","results":[{"status":"FAILURE","msg":"Engine execution has encountered an error.","returncode":1,"events":[{"msg":"Instance deployment failed. For details, see 'eb-engine.log'.","timestamp":1631294809,"severity":"ERROR"}]}]}

its so annoy because it can not find python 3.7 to run. can anyone give me a hand to by pass this mess?

application.py

# app.py

from flask import Flask
application = Flask(__name__)

@application.route("/")
def hello():
    return "Hello World!"

if __name__ == '__main__':
    application.run()

requirements.txt

click==7.1.2
Flask==1.1.2
itsdangerous==1.1.0
Jinja2==2.11.2
MarkupSafe==1.1.1
Werkzeug==1.0.1

Answer 1

This happened to me while following the tutorial as well.

The problem, in my case, was that my virtual environment folder venv was getting swept up in the deploy and breaking it.

I thought that I could put the path in .ebignore to prevent this, but I did not read the .ebignore documentation clearly:

If.ebignore isn't present, but.gitignore is, the EB CLI ignores files specified in.gitignore. If.ebignore is present, the EB CLI doesn't read.gitignore.

https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/eb-cli3-configuration.html#eb-cli3-ebignore

In my case, I just removed the .ebignore file completely, added a line for venv into my .gitignore file, ran eb deploy again and everything worked.