Conditional __version__

fastapi_restful/__init__.py

@@ -1,14 +1,24 @@
-import importlib.metadata
+import os
 import warnings
 
 from .cbv_base import Api, Resource, set_responses, take_init_parameters
 
-try:
-    __version__ = importlib.metadata.version(__name__)
-except importlib.metadata.PackageNotFoundError as e:
-    warnings.warn(f"Could not determine version of {__name__}", stacklevel=1)
-    warnings.warn(str(e), stacklevel=1)
-    __version__ = "unknown"
+if os.python.version < "3.8":
+    import pkg_resources
+    try:
+        __version__ = pkg_resources.get_distribution(__name__).version
+    except pkg_resources.DistributionNotFound as e:
+        warnings.warn(f"Could not determine version of {__name__}", stacklevel=1)
+        warnings.warn(str(e), stacklevel=1)
+        __version__ = "unknown"
+else:
+    import importlib.metadata
+    try:
+        __version__ = importlib.metadata.version(__name__)
+    except importlib.metadata.PackageNotFoundError as e:
+        warnings.warn(f"Could not determine version of {__name__}", stacklevel=1)
+        warnings.warn(str(e), stacklevel=1)
+        __version__ = "unknown"
 
 
 __all__ = [