Add support for python 3.7 (#66)

Co-authored-by: Lucas Boucinha <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -86,7 +86,7 @@ jobs:
     strategy:
        matrix:
            os: [pytwin-win10, ubuntu-20.04]
-           python-version: ["3.8", "3.9", "3.10"]
+           python-version: ["3.7", "3.8", "3.9", "3.10"]
     steps:
       - name: Run pytest
         uses: pyansys/actions/tests-pytest@v3

pyproject.toml

@@ -23,7 +23,7 @@ packages = [
 ]
 
 [tool.poetry.dependencies]
-python = ">=3.8,<3.12"
+python = ">=3.7.1,<3.11"
 importlib-metadata = {version = "^4.0", python = "<3.8"}
 numpy = ">=1.14"
 pandas = ">=1.3.2"

requirements/requirements_dev.txt

@@ -0,0 +1,6 @@
+numpy>=0.7.0
+pandas>=1.3.2
+pywin32>=304
+importlib-metadata>=4.0
+pytest>=7.1.2
+pytest-cov>=4.0.0

src/ansys/pytwin/__init__.py

@@ -3,9 +3,13 @@
 
 library
 """
-import importlib.metadata as metadata
+try:
+    import importlib.metadata as importlib_metadata
+except ModuleNotFoundError:
+    import importlib_metadata
 
-__version__ = metadata.version("pytwin")
+
+__version__ = importlib_metadata.version("pytwin")
 
 """
 PUBLIC API TO PYTWIN SETTINGS 

src/ansys/pytwin/settings.py

@@ -2,6 +2,7 @@
 import logging
 import os
 import shutil
+import sys
 import tempfile
 
 
@@ -369,12 +370,27 @@ def _migration_due_to_new_wd(old_path: str, new_path: str):
                 filepath=new_logfile_path, level=_PyTwinSettings.LOGGING_LEVEL, mode="a"
             )
         # Migrate subfolder
-        shutil.copytree(
-            src=old_path,
-            dst=new_path,
-            ignore=shutil.ignore_patterns(f"{_PyTwinSettings.TEMP_WD_NAME}*"),
-            dirs_exist_ok=True,
-        )
+        if sys.version >= "3.8":
+            shutil.copytree(
+                src=old_path,
+                dst=new_path,
+                ignore=shutil.ignore_patterns(f"{_PyTwinSettings.TEMP_WD_NAME}*"),
+                dirs_exist_ok=True,
+            )
+        else:
+            """Copy a directory structure overwriting existing files"""
+            src = old_path
+            dst = new_path
+            for root, dirs, files in os.walk(src):
+                if not os.path.isdir(root):
+                    os.makedirs(root)
+                for file in files:
+                    rel_path = root.replace(src, "").lstrip(os.sep)
+                    dest_path = os.path.join(dst, rel_path)
+                    if _PyTwinSettings.TEMP_WD_NAME not in dest_path:
+                        if not os.path.isdir(dest_path):
+                            os.makedirs(dest_path)
+                        shutil.copyfile(os.path.join(root, file), os.path.join(dest_path, file))
 
     @staticmethod
     def modify_wd_dir(new_path: str, erase: bool):