diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
new file mode 100644
index 0000000..4318799
--- /dev/null
+++ b/.github/workflows/python.yml
@@ -0,0 +1,33 @@
+name: Python package
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install ruff pytest
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+          sudo apt install exiftran exiftool pmount 
+      - name: Lint with ruff
+        run: |
+          # stop the build if there are Python syntax errors or undefined names
+          ruff --format=github --select=E9,F63,F7,F82 --target-version=py37 .
+          # default set of ruff rules with GitHub Annotations
+          ruff --format=github --target-version=py37 .
+      - name: Test with pytest
+        run: |
+          pytest
diff --git a/photo_importer/config.py b/photo_importer/config.py
index f608a3b..0510fe6 100755
--- a/photo_importer/config.py
+++ b/photo_importer/config.py
@@ -50,11 +50,13 @@ class Config(object):
 
         self.__config = configparser.ConfigParser()
         self.__config.read_dict(self.DEFAULTS)
-        self.__config.read(
-            [
-                filename,
-            ]
-        )
+
+        if filename is not None:
+            self.__config.read(
+                [
+                    filename,
+                ]
+            )
 
         if create:
             self.__create_if_not_exists()
diff --git a/photo_importer/importer.py b/photo_importer/importer.py
index 8b6be57..28b1d00 100755
--- a/photo_importer/importer.py
+++ b/photo_importer/importer.py
@@ -95,7 +95,7 @@ class Importer(threading.Thread):
     def __remove_empty_dirs(self, dirs):
         logging.info('Removing empty dirs')
         len_dirs = reversed(sorted([(len(d), d) for d in dirs]))
-        for l, d in len_dirs:
+        for _, d in len_dirs:
             try:
                 os.rmdir(d)
                 logging.info('Removed: %s', d)
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..9147e3a
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+progressbar==2.5
+psutil==5.9.5
+PyExifTool==0.5.5