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Adjust Windows DLL search path for Python 3.8+ #1440

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Adjust Windows DLL search path for Python 3.8+ #1440

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bc93756
Adjust Windows DLL search path for Python 3.8+
JGamache-autodesk Aug 4, 2023
0220de7
Only update DLL path if not a PIP module
JGamache-autodesk Oct 25, 2023
1dd05ef
Merge branch 'main' into adsk/bugfix/module_path_fix_python_3_8
JGamache-autodesk Oct 25, 2023
24cbe56
Fix importlib import
JGamache-autodesk Oct 25, 2023
f5ab44f
Support older Python versions
JGamache-autodesk Oct 25, 2023
ffbd77d
Merge branch 'main' into adsk/bugfix/module_path_fix_python_3_8
jstone-lucasfilm Nov 21, 2023
e9ba1f4
Merge branch 'main' into adsk/bugfix/module_path_fix_python_3_8
jstone-lucasfilm Jan 18, 2024
a2d2d2d
Merge branch 'main' into adsk/bugfix/module_path_fix_python_3_8
jstone-lucasfilm May 22, 2024
b242d6b
Merge branch 'main' into adsk/bugfix/module_path_fix_python_3_8
jstone-lucasfilm May 31, 2024
7b4ca3f
Merge branch 'main' into adsk/bugfix/module_path_fix_python_3_8
jstone-lucasfilm Jul 1, 2024
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17 changes: 17 additions & 0 deletions python/MaterialX/__init__.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,20 @@
# Python 3.8+ on Windows: DLL search paths for dependent
# shared libraries
# Refs.:
# - https://github.com/python/cpython/issues/80266
# - https://docs.python.org/3.8/library/os.html#os.add_dll_directory
import os
import sys
if sys.platform == "win32" and sys.version_info >= (3, 8):
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Should we handle Python less than 3.8 by appending to PATH or sys.path?

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Probably not. It was never done before and this code only became necessary in 3.8 when accessing PATH for library lookups was disabled because it was quite a large security risk.

# On a standard installation, this file is in %INSTALLDIR%\python\MaterialX
# We need to add %INSTALLDIR%\bin to the DLL path.
mxdir = os.path.dirname(__file__)
pydir = os.path.split(mxdir)[0]
installdir = os.path.split(pydir)[0]
bindir = os.path.join(installdir, "bin")
if os.path.exists(bindir):
os.add_dll_directory(bindir)
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from .main import *
from .colorspace import *

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