refactor: switch to stdlib importlib resources and metadata

Co-authored-by: alexlib <747110+alexlib@users.noreply.github.com>

Author: Copilot

openpiv/__init__.py

@@ -1,4 +1,10 @@
-def test():
-    import pytest
-
-    pytest.main()
+from importlib.metadata import version
+
+
+__version__ = version("OpenPIV")
+
+
+def test():
+    import pytest
+
+    pytest.main()

openpiv/piv.py

@@ -2,7 +2,7 @@
 import matplotlib.pyplot as plt
 
 from openpiv import pyprocess, tools, validation, filters
-from importlib_resources import files
+from importlib.resources import files
 
 import matplotlib.animation as animation
 

openpiv/settings.py

@@ -1,7 +1,7 @@
 
 import pathlib
 from dataclasses import dataclass
-from importlib_resources import files
+from importlib.resources import files
 from typing import Optional, Tuple, Union
 import numpy as np
 

openpiv/test/test_package_metadata.py

@@ -0,0 +1,7 @@
+from importlib.metadata import version
+
+import openpiv
+
+
+def test_package_version_matches_metadata():
+    assert openpiv.__version__ == version("OpenPIV")

openpiv/test/test_piv.py

@@ -1,7 +1,7 @@
 """Tests for the piv module"""
 import numpy as np
 import pytest
-from importlib_resources import files
+from importlib.resources import files
 from openpiv import piv, tools
 from openpiv.pyprocess import extended_search_area_piv
 import matplotlib

openpiv/test/test_process.py

@@ -5,7 +5,7 @@
 from skimage import img_as_ubyte
 from scipy.ndimage import shift as shift_img
 # import pkg_resources as pkg
-from importlib_resources import files
+from importlib.resources import files
 from openpiv.pyprocess import extended_search_area_piv as piv
 from openpiv.pyprocess import fft_correlate_images, \
                               correlation_to_displacement

openpiv/test/test_validation.py

@@ -1,7 +1,7 @@
 """ Testing validation functions """
 from typing import Tuple
 import numpy as np
-from importlib_resources import files
+from importlib.resources import files
 import matplotlib.pyplot as plt
 
 from openpiv.pyprocess import extended_search_area_piv as piv

openpiv/test/test_windef.py

@@ -8,7 +8,7 @@
 import pathlib
 import numpy as np
 import warnings
-from importlib_resources import files
+from importlib.resources import files
 from openpiv import windef
 from openpiv.test import test_process
 from openpiv.tools import display_vector_field, display_vector_field_from_arrays, save

openpiv/test/test_windef_coverage.py

@@ -8,7 +8,7 @@
 import tempfile
 import pathlib
 import types
-from importlib_resources import files
+from importlib.resources import files
 
 from openpiv import windef
 from openpiv.settings import PIVSettings

openpiv/test/test_windef_detailed.py

@@ -5,7 +5,7 @@
 import pytest
 import numpy as np
 import pathlib
-from importlib_resources import files
+from importlib.resources import files
 import matplotlib.pyplot as plt
 import tempfile
 import shutil