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Python package development

Python package development happens when you work on a single Python package (e.g. invenio-communities). Either you are building a completely new package or you are adding/modifying an existing package.

Prerequisites

Make sure you have already checked out the source code of the module(s) you want to work on.

Install

Once you got the source code, create a Python virtual environment and make an editable install of the Python package:

Note

mkvirtualenv is a tool provided by virtualenv-wrapper to manage Python virtualenvs. See Python virtual environments

cd ~/src/invenio-app-rdm
mkvirtualenv app-rdm
# elasticsearch7 only needed for certain modules
pip install -e ".[tests,elasticsearch7]"

For each module, you'll have to check what is the precise list of extras you need to add (the tests,elasticsearch7). If you don't add them, you won't have all the tools needed for testing.

Run tests

Running the test is normally as simple as:

./run-tests.sh

The run-tests.sh under the hood uses pytest to run the tests. If the module needs services such as a database, cache or search index, the script usually uses docker-services-cli to automatically boot up the required services

Note

docker-services-cli may fail if you already have the services running. Most notably, if have a InvenioRDM development instance running, the you have to shut it down first before running tests.

Multiple packages

If you need to work on multiple packages at the same time - for instance you could be adding a cross-cutting feature to invenio-communities and invenio-requests at the same time, the installation is almost identical to a single module:

First make sure you have the source code of both modules. Next, simply do editable installs of both:

mkvirtualenv communities
pip install -e "~/src/invenio-communities[tests,elasticsearch7]" \
    -e "~/src/invenio-requests[tests,elasticsearch7]"

Application integration

See the section instance development for how to integrate your development versions in the InvenioRDM application.