Use __version__ instead of version() in python

CMakeLists.txt

@@ -12,6 +12,16 @@ set(PCT_LIBRARIES PCT)
 if(NOT ITK_SOURCE_DIR)
   find_package(ITK REQUIRED)
   list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
+endif()
+include(GetGitRevisionDescription)
+get_git_head_revision(GIT_REFSPEC GIT_SHA1)
+if(GIT_SHA1 MATCHES ".*NOTFOUND")
+  set(PCT_VERSION_HASH "")
+else()
+  set(PCT_VERSION_HASH ", git hash ${GIT_SHA1}")
+endif()
+
+if(NOT ITK_SOURCE_DIR)
   include(ITKModuleExternal)
 else()
   set(ITK_DIR ${CMAKE_BINARY_DIR})
@@ -41,16 +51,6 @@ if(PCT_BUILD_APPLICATIONS)
   add_subdirectory(applications)
 endif()
 
-#-----------------------------------------------------------------------------
-# Common revision info between applications
-include(GetGitRevisionDescription)
-get_git_head_revision(GIT_REFSPEC GIT_SHA1)
-if(GIT_SHA1 MATCHES ".*NOTFOUND")
-  set(PCT_VERSION_HASH "")
-else()
-  set(PCT_VERSION_HASH ", git hash ${GIT_SHA1}")
-endif()
-
 #=========================================================
 # Build doc
 option(PCT_BUILD_SPHINX "Build Sphinx Documentation" OFF)

applications/pctargumentparser.py

@@ -12,7 +12,7 @@
 class PCTHelpFormatter(argparse.ArgumentDefaultsHelpFormatter):
     def _format_usage(self, usage, actions, groups, prefix=None):
         if prefix is None:
-            prefix = pct.version() + "\n\nusage: "
+            prefix = pct.__version__ + "\n\nusage: "
         return super()._format_usage(usage, actions, groups, prefix)
 
 
@@ -22,7 +22,7 @@ def __init__(self, description=None, **kwargs):
         self.formatter_class = PCTHelpFormatter
         # allow negative numeric tokens to be treated as values, not options. This mirrors CPython behavior in python 3.14
         self._negative_number_matcher = re.compile(r"-\.?\d")
-        self.add_argument("-V", "--version", action="version", version=pct.version())
+        self.add_argument("-V", "--version", action="version", version=pct.__version__)
 
     def build_signature(self) -> inspect.Signature:
         """Build a compact Python signature: only required kwargs + **kwargs."""

wrapping/CMakeLists.txt

@@ -2,10 +2,9 @@ itk_wrap_module(PCT)
 itk_auto_load_submodules()
 itk_end_wrap_module()
 
-set(PCT_VERSION_SCRIPT "${PCT_BINARY_DIR}/applications/pctversion.py")
 configure_file(
-  ${PCT_SOURCE_DIR}/applications/pctversion.py.in
-  ${PCT_VERSION_SCRIPT}
+  ${PCT_SOURCE_DIR}/wrapping/pctConfig.py.in
+  ${PCT_BINARY_DIR}/Wrapping/Generators/Python/pctConfig.py
 )
 
 file(
@@ -17,9 +16,9 @@ file(
 wrap_itk_python_bindings_install(/itk "PCT"
   __init_pct__.py
   ${PCT_PYTHON_APP}
-  ${PCT_VERSION_SCRIPT}
   ${PCT_SOURCE_DIR}/wrapping/pctExtras.py
   ${PCT_SOURCE_DIR}/applications/pctargumentparser.py
+  ${PCT_BINARY_DIR}/Wrapping/Generators/Python/pctConfig.py
 )
 
 # Copy python applications to the ITK wrapping directory to ensure they can be imported in tests.

wrapping/__init_pct__.py

@@ -4,9 +4,12 @@
 itk_module = sys.modules["itk"]
 pct_module = getattr(itk_module, "PCT")
 
+# Load the CMake-generated version and assign it to `itk.PCT.__version__`.
+pct_version = importlib.import_module("itk.pctConfig").PCT_GLOBAL_VERSION_STRING
+setattr(pct_module, "__version__", pct_version)
+
 # Import PCT submodules
 pct_submodules = [
-    "itk.pctversion",
     "itk.pctargumentparser",
     "itk.pctExtras",
 ]

wrapping/pctConfig.py.in

@@ -0,0 +1 @@
+PCT_GLOBAL_VERSION_STRING = "@PCT_VERSION_MAJOR@.@PCT_VERSION_MINOR@.@PCT_VERSION_PATCH@@PCT_VERSION_HASH@"

wrapping/pctExtras.py

@@ -42,7 +42,7 @@ def app_func(*args, **kwargs):
     options = _parser.format_help()
     idx = options.lower().find("options:")
     opt_text = options[idx:].strip()
-    parts = [pct.version(), description, examples, opt_text]
+    parts = [pct.__version__, description, examples, opt_text]
     app_func.__doc__ = "\n\n".join(parts)
 
     return app_func