python 3.7 runtime check

src/lumigo_opentelemetry/__init__.py

@@ -77,6 +77,15 @@ def auto_load(_: Any) -> None:
 
 
 def init() -> Dict[str, Any]:
+    """Initialize the Lumigo OpenTelemetry distribution."""
+    python_version = sys.version_info
+    if not (python_version >= (3, 8) and python_version <= (3, 11)):
+        logger.warning(
+            f"Unsupported Python version {python_version[0]}.{python_version[1]}; "
+            "only Python 3.8 to 3.11 are supported."
+        )
+        return {}
+
     if str(os.environ.get("LUMIGO_SWITCH_OFF", False)).lower() == "true":
         logger.info(
             "Lumigo OpenTelemetry distribution disabled via the 'LUMIGO_SWITCH_OFF' environment variable"

src/test/unit/test_tracer.py

@@ -103,3 +103,31 @@ def _test_dependency_report_called(self):
         assert resource_attributes and resource_attributes["lumigo.distro.version"]
         assert "process.environ" not in resource_attributes.keys()
         assert dependencies
+
+
+class TestPythonVersionCheck(TestCase):
+    @patch("sys.version_info", (3, 7))  # Set Python version to 3.7
+    def test_python_version_too_old(self):
+        with self.assertLogs("lumigo-opentelemetry", level="WARNING") as cm:
+            result = init()
+        self.assertEqual(result, {})
+        self.assertIn(
+            "Unsupported Python version 3.7; only Python 3.8 to 3.11 are supported.",
+            cm.output[0],
+        )
+
+    @patch("sys.version_info", (3, 8))  # Set Python version to 3.8
+    def test_python_version_supported(self):
+        with self.assertLogs("lumigo-opentelemetry", level="WARNING"):
+            result = init()
+        self.assertIsInstance(result, dict)
+
+    @patch("sys.version_info", (3, 12))  # Set Python version to 3.12
+    def test_python_version_too_new(self):
+        with self.assertLogs("lumigo-opentelemetry", level="WARNING") as cm:
+            result = init()
+        self.assertEqual(result, {})
+        self.assertIn(
+            "Unsupported Python version 3.12; only Python 3.8 to 3.11 are supported.",
+            cm.output[0],
+        )