To create project:

$ aws configure

aws_access_key_id = <aws_access_key_id>
aws_secret_access_key = <aws_secret_access_key>
region = us-west-2
output = json

$ pip install virtualenv

$ virtualenv -p python3.11 venv

$ source venv/bin/activate

$ pip install -r requirements.txt

To deploy project:

$ zappa init

$ zappa deploy dev

$ zappa update dev

If zappa update dev fails with below error,

botocore.exceptions.ParamValidationError: Parameter validation failed:
Invalid type for parameter restApiId, value: None, type: <class 'NoneType'>, valid types: <class 'str'>

Execute below commands.

$ zappa undeploy dev

$ zappa deploy dev

To delete project deployment:

$ zappa undeploy dev

To run the server in local env:

$ python hello.py

To run the app in localhost:

$ flask --app hello run