Using importlib instead of pkg_resources

newsletter/__init__.py

@@ -1,7 +1,26 @@
-from pkg_resources import get_distribution, DistributionNotFound
+PACKAGE_NAME = "django-newsletter"
+
+# importlib is available in python >= 3.8.
+# Remove the except importError once support for python < 3.8 is dropped.
 
 try:
-    __version__ = get_distribution("django-newsletter").version
-except DistributionNotFound:
-    # package is not installed
-    __version__ = None
+    from importlib.metadata import distribution, PackageNotFoundError
+
+    def get_distribution_version():
+        try:
+            return distribution(PACKAGE_NAME).version
+        except PackageNotFoundError:
+            # package is not installed
+            return None
+except ImportError:
+    from pkg_resources import get_distribution, DistributionNotFound
+
+    def get_distribution_version():
+        try:
+            return get_distribution(PACKAGE_NAME).version
+        except DistributionNotFound:
+            # package is not installed
+            return None
+
+
+__version__ = get_distribution_version()