Ft poetry support

.github/workflows/test_yourdfpy.yml

@@ -0,0 +1,66 @@
+name: Testing yourdfy
+
+# Controls when the workflow will run
+on: 
+  push:
+    branches:
+      - ft-poetry-support
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix: 
+        python-version: ['3.7', '3.8', '3.9']
+    steps:
+      #----------------------------------------------
+      #       check-out repo and set-up python
+      #----------------------------------------------
+      - name: Check out repository
+        uses: actions/checkout@v3
+      - name: Set up python
+        id: setup-python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      #----------------------------------------------
+      #  -----  install & configure poetry  -----
+      #----------------------------------------------
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+          installer-parallel: true
+
+       #----------------------------------------------
+      #       load cached venv if cache exists
+      #----------------------------------------------
+      - name: Load cached virtual environment
+        id: cached-poetry-dependencies
+        uses: actions/cache@v2
+        with:
+          path: .venv
+          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
+      #----------------------------------------------
+      # install dependencies if cache does not exist
+      #----------------------------------------------
+      - name: Install dependencies
+        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+        run: poetry install --no-interaction --no-root
+      #----------------------------------------------
+      # install your root project, if required
+      #----------------------------------------------
+      - name: Install library
+        run: poetry install --no-interaction
+      #----------------------------------------------
+      #              run test suite
+      #----------------------------------------------
+      # Runs a set of commands using the runners shell
+      - name: Run pytest
+        run: PYTHONPATH=src/ poetry run python -m pytest --cov=yourdfpy tests/
+

.travis.yml

@@ -8,6 +8,7 @@ python:
 
 install:
 - pip install setuptools_scm # this is needed, otherwise the correct version cannot be determined; it is always 0.0.0
+- pip install -U importlib_metadata
 - pip install .
 - pip install pytest pytest-cov # coveralls
 

README.md

@@ -16,6 +16,18 @@ You can install yourdfpy directly from pip:
 pip install yourdfpy
 ```
 
+## Installation Developers
+
+You can install the package via [poetry](https://python-poetry.org/docs/).
+```bash
+poetry install
+```
+
+Then, enter the virtual enviroment that was created with 
+```bash
+poetry shell
+```
+
 ## Visualization
 
 Once installed, you can visualize a URDF model from the command line: