test for python versions

.github/workflows/python-test.yml

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+name: Python package
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8, 3.9, 3.10, 3.11]
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+        pip install -r requirements.txt
+
+    -name: Download pytor file
+      run: |
+        wget https://storage.googleapis.com/cnvpytor_data/HepG2_WGS.pytor
+
+    - name: Run tests
+      run: |
+        pytest

tests/test_viewer.py

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+import cnvpytor
+from pathlib import Path
+
+
+def test_module():
+    app = cnvpytor.Viewer(["HepG2_WGS.pytor"], bin_size=100000)
+    print(app.ls())
+
+
+if __name__ == "__main__":
+    print("Welcome to python version test")
+    test_module()
+