Improve How to use to help running tests locally

Author: jolelievre

HOW-TO-USE.md

@@ -70,3 +70,44 @@ docker compose up generate
 ```
 
 This will create new folders for the new version you just added.
+
+## Running tests locally
+
+To run the python tests you need to install requirements
+
+```bash
+$ pip install -r requirements.txt
+```
+
+Then you can run the tests:
+
+```bash
+$ nosetests
+```
+
+Locally you may have an error like ``, running these commands may help running tests locally:
+
+```bash
+$ pip uninstall -y nose
+$ pip install -U nose --no-binary :all:
+```
+
+or alternatively:
+
+```bash
+$ pip install nose-py3
+```
+
+If you need to debug one specific test you first need to run
+
+```
+$ nosetests --with-id
+```
+
+This will execute tests and each test method will be assigned an ID that you can then use to filter it specifically:
+
+```
+$ nosetests --with-id 7
+```
+
+This will also generate a `.nodeids` binary file, when you add new test methods you need to remove this file to re-generate the list of IDs.