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Environment Setup

Backend devs should have the following installed and configured as described below:

Install Python 3.x​

  1. Download the Python installer package from the official Python website
  2. It should detect your operating system and show a yellow download button. If it doesn’t, click the windows link and choose the latest Python release.
  3. Once the download is complete, double-click the package to start installing Python. Follow the installation steps with the default settings.
  4. Once installation is complete, you have python installed on your system!

To check if it is installed correctly:

py --version
# Python 3.10.7
info

If you have installed Python through the Microsoft Store, replace py with python in the command above.

Install poetry​

The installer script is available directly at install.python-poetry.org. The script can be executed directly (i.e. curl python) or downloaded and then executed from disk (e.g. in a CI environment).

Step 1. Install Poetry​

Run the following with PowerShell

(Invoke-WebRequest -Uri https://install.python-poetry.org -UseBasicParsing).Content | py -
info

If you have installed Python through the Microsoft Store, replace py with python in the command above.

Step 2. Add Peotry to your PATH​

The installer creates a poetry wrapper in %APPDATA%\Python\Scripts on Windows.

If this directory is not present in your $PATH, you can add it in order to invoke Poetry as poetry.

Step 3. Use Poetry​

Once Poetry is installed and in your $PATH, you can execute the following

poetry --version

Install nvm & node.js​

Follow the instructions to install nvm & node.js here

Reminder

Use nvm to switch between versions of node.js across projects

Install serverless cli​

Install the serverless CLI via NPM:

npm install -g serverless

That's all!

Install dynamodb offline​

  1. Download DynamoDB here (you can view other download links here)

    caution

    To run DynamoDB on your computer, you must have the Java Runtime Environment (JRE) version 8.x or newer. The application doesn't run on earlier JRE versions.

  2. Extract the archive and copy its content to a location of your choice.

  3. Open a terminal in the location where you've extracted your files and enter the following command:

    java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb
    info

    If you're using Windows PowerShell, be sure to enclose the parameter name or the entire name and value like this:

    java -D"java.library.path=./DynamoDBLocal_lib" -jar DynamoDBLocal.jar

  4. DynamoDB is now running on port 8000. To stop it, press Ctrl+C in the terminal.