This package has been deprecated

Author message:

Permanently moved to @ardnt/now-python-wsgi

@ardent-labs/now-python-wsgi

now-python-wsgi

A Now builder for Python WSGI applications

Quickstart

If you have an existing WSGI app, getting this builder to work for you is a piece of 🍰!

1. Add a Now configuration

Add a now.json file to the root of your application:

{
    "version": 2,
    "name": "python-wsgi-app",
    "builds": [{
        "src": "index.py",
        "use": "@ardent-labs/now-python-wsgi",
        "config": { "maxLambdaSize": "15mb" }
    }]
}

This configuration is doing a few things in the "builds" part:

1. "src": "index.py" This tells Now that there is one entrypoint to build for. index.py is a file we'll create shortly.
2. "use": "@ardent-labs/now-python-wsgi" Tell Now to use this builder when deploying your application
3. "config": { "maxLambdaSize": "15mb" } Bump up the maximum size of the built application to accommodate some larger python WSGI libraries (like Django or Flask). This may not be necessary for you.

2. Add a Now entrypoint

Add index.py to the root of your application. This entrypoint should make available an object named application that is an instance of your WSGI application. E.g.:

# For a Dango app
from django_app.wsgi import application
# Replace `django_app` with the appropriate name to point towards your project's
# wsgi.py file

Look at your framework documentation for help getting access to the WSGI application.

If the WSGI instance isn't named application you can set the wsgiApplicationName configuration option to match your application's name (see the configuration section below).

3. Deploy!

That's it, you're ready to go:

$ now
> Deploying python-wsgi-app
...
> Success! Deployment ready [57s]

Requirements

Your project may optionally include a requirements.txt file to declare any dependencies. If you do include a requirements file, Werkzeug must appear as a dependency, e.g.:

# requirements.txt
Werkzeug >=0.14,<1

If no requirements.txt file is included, then the builder will install Werkzeug to ensure handler dependencies are met.

Configuration options

runtime

Select the lambda runtime. Defaults to python3.6.

{
    "builds": [{
        "config": { "runtime": "python3.6" }
    }]
}

wsgiApplicationName

Select the WSGI application to run from your entrypoint. Defaults to application.

{
    "builds": [{
        "config": { "wsgiApplicationName": "application" }
    }]
}

Additional considerations

Lambda environment limitations

At the time of writing, Zeit Now runs on AWS Lambda. This has a number of implications on what libaries will be available to you, notably:

• PostgreSQL, so psycopg2 won't work out of the box
• MySQL, so MySQL adapters won't work out of the box either
• Sqlite, so the built-in Sqlite adapter won't be available

Contributing

To-dos

• [ ] Add tests for various types of requests

Attribution

This implementation draws upon work from:

• @clement on now-builders/#163
• serverless and serverless-wsgi
• @sisp on now-builders/#95
• Zappa by @miserlou