fix: fix 2.8.3 version for python 3.7

closes #316

Author: bsrdjan

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 # https://packaging.python.org/en/latest/specifications/declaring-project-metadata/
 [project]
 name = "pyrfc"
-version = "2.8.3"
+version = "2.8.31"
 readme = "README.md"
 license = { file = "LICENSES/Apache-2.0.txt" }
 description = "Python bindings for SAP NetWeaver RFC SDK"
@@ -30,7 +30,9 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3 :: Only"
 ]
-dependencies = []
+dependencies = [
+    "importlib-metadata"
+]
 
 [project.urls]
 homepage = "https://github.com/SAP/PyRFC"

src/pyrfc/__init__.py

@@ -2,10 +2,15 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-import importlib.metadata
 import os
+import sys
 
-__version__ = importlib.metadata.version("pyrfc")
+if sys.version_info < (3,8):
+    import importlib_metadata as mtd
+else:
+    import importlib.metadata as mtd
+
+__version__ = mtd.version("pyrfc")
 __version_info__ = tuple(__version__.split("."))
 
 if os.name == "nt":