A walk in GraphQL

Day 4 exercise - Python

Read the instructions on the Day 4 exercise definition

HINT (Optional):

This patch contains an example of the code applied to createSkill, in order to reach the 3 different strategies for error handling.

• Apply the following “hint” git patch: error_handling.patch.

  From command line: git apply error_handling.patch

Run the server

This exercise is prepared to work with Python 3, with SQLite and SQAlchemy as ORM

1. open a terminal
2. go to the Python exercise directory
3. run [pip][pip3] install virtualenv to install it. It is used to create isolated Python environments
4. run virtualenv venv to create the venv environment

5. Activate virtual environment:

   • On Windows run venv\Scripts\activate.bat (deactivate.bat to deactivate the environment).
   • On Linux run source env/bin/activate (deactivate to deactivate the environment)
6. run [pip][pip3] install -r requirements.txt to install the needes packages if you didn’t before
7. run uvicorn app:app to start the GraphQL server (uvicorn [file_name}:[app_name])
8. open your browser and type http://localhost:8000/ to display the GraphQL playground so you can run the queries against the server

The project

• SQLite Data source (../datasource/data.db)
• Server app
• Schemas
• Resolver map
• Models
• db abstraction