Requirements
You'll need Lando installed, and that's it.
Setting up Lando
Get into your project directory, and get things started with a Lando file.
cd my-project
touch .lando.yml
Name your Lando project and define a python service.
name: flask-example
services:
python:
type: python:3.5
Expose python and pip command line tools.
tooling:
pip:
service: python
python:
service: python
Install Flask
Fire up the container, and let's get the requirements going. From the command line, run:
lando start
lando pip install Flask
lando pip freeze > requirements.txt
Note: It may be the case that this will add carriage return characters to your
requirements.txtfile. In that case, you may have to runlando ssh -s python -c 'pip freeze > requirements.txt'instead.
Now tell lando that we want it to install requirements during build.
services:
python:
type: python:3.5
build:
- 'pip install -r /app/requirements.txt'
Build an app
Build your app.py file, specifying the host as 0.0.0.0, with no port.
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello():
return "Hello World!"
if __name__ == '__main__':
app.run(host = '0.0.0.0')
Flask defaults to port 5000, so let's set up our Lando proxy with that port exposed internally.
proxy:
python:
- flask-example.lndo.site:5000
Tell lando to run the python app at startup.
services:
python:
type: python:3.5
build:
- 'pip install -r /app/requirements.txt'
run:
- python /app/app.py
Conclusion
Your Lando file will finally look like the following.
name: flask-example
proxy:
python:
- flask-example.lndo.site:5000
services:
python:
type: python:3.7
build:
- 'pip install -r /app/requirements.txt'
run:
- python /app/app.py
tooling:
pip:
service: python
python:
service: python
Enjoy!
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