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Kazuaki Ishizaki edited comment on ARROW-6015 at 9/1/19 4:21 PM: ----------------------------------------------------------------- I think that {{numba}} (preciously {{llvmlite}}) has the same problem regarding the CRT DLLs. A DLL load error occurs before executing {{vc_redist.x64.exe}}. The error disappear after executing {{vc_redist.x64.exe}}. {code:java} > cd \numba\python-3.7.4-embed-amd64 > python -m pip install numba Collecting numba ... Installing collected packages: llvmlite, numba Successfully installed llvmlite-0.29.0 numba-0.45.1 > \cygwin64\bin\find . -name "msv*" ./Lib/site-packages/numpy/distutils/msvc9compiler.py ./Lib/site-packages/numpy/distutils/msvccompiler.py ./Lib/site-packages/numpy/distutils/__pycache__/msvc9compiler.cpython-37.pyc ./Lib/site-packages/numpy/distutils/__pycache__/msvccompiler.cpython-37.pyc ./Lib/site-packages/setuptools/msvc.py ./Lib/site-packages/setuptools/__pycache__/msvc.cpython-37.pyc > python -c "import numpy" > \cygwin64\bin\find . -name "msv*" ./Lib/site-packages/numpy/distutils/msvc9compiler.py ./Lib/site-packages/numpy/distutils/msvccompiler.py ./Lib/site-packages/numpy/distutils/__pycache__/msvc9compiler.cpython-37.pyc ./Lib/site-packages/numpy/distutils/__pycache__/msvccompiler.cpython-37.pyc ./Lib/site-packages/setuptools/msvc.py ./Lib/site-packages/setuptools/__pycache__/msvc.cpython-37.pyc > type Lib\site-packages\numpy\LICENSE.txt ... Name: Microsoft Visual C++ Runtime Files Files: extra-dll\msvcp140.dll License: MSVC https://www.visualstudio.com/license-terms/distributable-code-microsoft-visual-studio-2015-rc-microsoft-visual-studio-2015-sdk-rc-includes-utilities-buildserver-files/#visual-c-runtime Subject to the License Terms for the software, you may copy and distribute with your program any of the files within the followng folder and its subfolders except as noted below. You may not modify these files. C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist You may not distribute the contents of the following folders: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist\debug_nonredist C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist\onecore\debug_nonredist Subject to the License Terms for the software, you may copy and distribute the following files with your program in your programΓÇÖs application local folder or by deploying them into the Global Assembly Cache (GAC): VC\atlmfc\lib\mfcmifc80.dll VC\atlmfc\lib\amd64\mfcmifc80.dll Name: Microsoft Visual C++ Runtime Files Files: extra-dll\msvc*90.dll, extra-dll\Microsoft.VC90.CRT.manifest License: MSVC For your convenience, we have provided the following folders for use when redistributing VC++ runtime files. Subject to the license terms for the software, you may redistribute the folder (unmodified) in the application local folder as a sub-folder with no change to the folder name. You may also redistribute all the files (*.dll and *.manifest) within a folder, listed below the folder for your convenience, as an entire set. \VC\redist\x86\Microsoft.VC90.ATL\ atl90.dll Microsoft.VC90.ATL.manifest \VC\redist\ia64\Microsoft.VC90.ATL\ atl90.dll Microsoft.VC90.ATL.manifest \VC\redist\amd64\Microsoft.VC90.ATL\ atl90.dll Microsoft.VC90.ATL.manifest \VC\redist\x86\Microsoft.VC90.CRT\ msvcm90.dll msvcp90.dll msvcr90.dll Microsoft.VC90.CRT.manifest \VC\redist\ia64\Microsoft.VC90.CRT\ msvcm90.dll msvcp90.dll msvcr90.dll Microsoft.VC90.CRT.manifest ... > python -c "import numba" Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\numba\__init__.py", line 15, in <module> from . import config, errors, _runtests as runtests, types File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\numba\config.py", line 18, in <module> import llvmlite.binding as ll File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\__init__.py", line 6, in <module> from .dylib import * File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\dylib.py", line 4, in <module> from . import ffi File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\ffi.py", line 154, in <module> raise OSError("Could not load shared object file: {}".format(_lib_name)) OSError: Could not load shared object file: llvmlite.dll > python -c "llvmlite.binding as ll" Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\__init__.py", line 6, in <module> from .dylib import * File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\dylib.py", line 4, in <module> from . import ffi File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\ffi.py", line 154, in <module> raise OSError("Could not load shared object file: {}".format(_lib_name)) OSError: Could not load shared object file: llvmlite.dll > >bitsadmin /TRANSFER htmlget https://aka.ms/vs/16/release/vc_redist.x64.exe > >c:\numba\vc_redist.x64.exe > ../vc_redist.x64.exe > python -c "import llvmlite.binding as ll" > python -c "import numba" > {code} was (Author: kiszk): After installing numba package to Python, I cannot still find the CRT DLL files under the directory. I think that {{numpy}} statically links the CRT DLLs. NOTE: I met the DLL loading problem of llvmlite in a fresh Windows10 instance. I think this is another known issue in numba. {code} > cd \numba\python-3.7.4-embed-amd64 > python -m pip install numba Collecting numba ... Installing collected packages: llvmlite, numba Successfully installed llvmlite-0.29.0 numba-0.45.1 > \cygwin64\bin\find . -name "msv*" ./Lib/site-packages/numpy/distutils/msvc9compiler.py ./Lib/site-packages/numpy/distutils/msvccompiler.py ./Lib/site-packages/numpy/distutils/__pycache__/msvc9compiler.cpython-37.pyc ./Lib/site-packages/numpy/distutils/__pycache__/msvccompiler.cpython-37.pyc ./Lib/site-packages/setuptools/msvc.py ./Lib/site-packages/setuptools/__pycache__/msvc.cpython-37.pyc > python -c "import numpy" > \cygwin64\bin\find . -name "msv*" ./Lib/site-packages/numpy/distutils/msvc9compiler.py ./Lib/site-packages/numpy/distutils/msvccompiler.py ./Lib/site-packages/numpy/distutils/__pycache__/msvc9compiler.cpython-37.pyc ./Lib/site-packages/numpy/distutils/__pycache__/msvccompiler.cpython-37.pyc ./Lib/site-packages/setuptools/msvc.py ./Lib/site-packages/setuptools/__pycache__/msvc.cpython-37.pyc > type Lib\site-packages\numpy\LICENSE.txt ... Name: Microsoft Visual C++ Runtime Files Files: extra-dll\msvcp140.dll License: MSVC https://www.visualstudio.com/license-terms/distributable-code-microsoft-visual-studio-2015-rc-microsoft-visual-studio-2015-sdk-rc-includes-utilities-buildserver-files/#visual-c-runtime Subject to the License Terms for the software, you may copy and distribute with your program any of the files within the followng folder and its subfolders except as noted below. You may not modify these files. C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist You may not distribute the contents of the following folders: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist\debug_nonredist C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\redist\onecore\debug_nonredist Subject to the License Terms for the software, you may copy and distribute the following files with your program in your programΓÇÖs application local folder or by deploying them into the Global Assembly Cache (GAC): VC\atlmfc\lib\mfcmifc80.dll VC\atlmfc\lib\amd64\mfcmifc80.dll Name: Microsoft Visual C++ Runtime Files Files: extra-dll\msvc*90.dll, extra-dll\Microsoft.VC90.CRT.manifest License: MSVC For your convenience, we have provided the following folders for use when redistributing VC++ runtime files. Subject to the license terms for the software, you may redistribute the folder (unmodified) in the application local folder as a sub-folder with no change to the folder name. You may also redistribute all the files (*.dll and *.manifest) within a folder, listed below the folder for your convenience, as an entire set. \VC\redist\x86\Microsoft.VC90.ATL\ atl90.dll Microsoft.VC90.ATL.manifest \VC\redist\ia64\Microsoft.VC90.ATL\ atl90.dll Microsoft.VC90.ATL.manifest \VC\redist\amd64\Microsoft.VC90.ATL\ atl90.dll Microsoft.VC90.ATL.manifest \VC\redist\x86\Microsoft.VC90.CRT\ msvcm90.dll msvcp90.dll msvcr90.dll Microsoft.VC90.CRT.manifest \VC\redist\ia64\Microsoft.VC90.CRT\ msvcm90.dll msvcp90.dll msvcr90.dll Microsoft.VC90.CRT.manifest ... /// When I run numba in a fresh Window10 instance, I got the following error. But, I think that it is not an issue due to DLL. I will invesitgate this afternoon in JST. > python -c "import numba" C:\numba\python-3.7.4-embed-amd64>python -c "import numba" Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\numba\__init__.py", line 15, in <module> from . import config, errors, _runtests as runtests, types File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\numba\config.py", line 18, in <module> import llvmlite.binding as ll File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\__init__.py", line 6, in <module> from .dylib import * File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\dylib.py", line 4, in <module> from . import ffi File "C:\numba\python-3.7.4-embed-amd64\lib\site-packages\llvmlite\binding\ffi.py", line 154, in <module> raise OSError("Could not load shared object file: {}".format(_lib_name)) OSError: Could not load shared object file: llvmlite.dll {code} > [Python] pyarrow wheel: `DLL load failed` when importing on windows > -------------------------------------------------------------------- > > Key: ARROW-6015 > URL: https://issues.apache.org/jira/browse/ARROW-6015 > Project: Apache Arrow > Issue Type: Bug > Components: Packaging, Python > Affects Versions: 0.14.1 > Reporter: Ruslan Kuprieiev > Priority: Major > Labels: wheel > Fix For: 0.15.0 > > > When installing pyarrow 0.14.1 on windows 10 x64 with python 3.7, you get: > >>> import pyarrow > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "C:\Python37\lib\site-packages\pyarrow\__init__.py", line 49, in > <module> > from pyarrow.lib import cpu_count, set_cpu_count > ImportError: DLL load failed: The specified module could not be found. > On 0.14.0 everything works fine. -- This message was sent by Atlassian Jira (v8.3.2#803003)