Problem for embedding Python in a DLL file called back by a third-party application
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I am trying to build a DLL (using C++) which will be used by a third-party application (TRNEXE.exe). Within the DLL file, I want to embed some Python codes. So I use pybind11 and C/Python API. This works fine with standard modules of Python such as sys, os, traceback, etc. However, when I tried to import a Python module which is found in the site-packages folder, e.g. NumPy, pandas, or other like:
PyRun_SimpleString ("import NumPy") (with C/Python API)
pybind11:: exec ("import NumPy")
or when I import NumPy in an external Python code which is called by a DLL file
The program does not work anymore. It seems the program does not find the packages.
Moreover, I also tried to embed Python code in a C++ console application (it means that I built an executable (not DLL) file from C++ source code which calls some Python codes) and it worked fine with all Python modules.
Does anyone have experience with this kind of problem and have any suggestion for me, please?
PS I set the necessary values in PATH
c++ dll cpython pybind11
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
add a comment |
I am trying to build a DLL (using C++) which will be used by a third-party application (TRNEXE.exe). Within the DLL file, I want to embed some Python codes. So I use pybind11 and C/Python API. This works fine with standard modules of Python such as sys, os, traceback, etc. However, when I tried to import a Python module which is found in the site-packages folder, e.g. NumPy, pandas, or other like:
PyRun_SimpleString ("import NumPy") (with C/Python API)
pybind11:: exec ("import NumPy")
or when I import NumPy in an external Python code which is called by a DLL file
The program does not work anymore. It seems the program does not find the packages.
Moreover, I also tried to embed Python code in a C++ console application (it means that I built an executable (not DLL) file from C++ source code which calls some Python codes) and it worked fine with all Python modules.
Does anyone have experience with this kind of problem and have any suggestion for me, please?
PS I set the necessary values in PATH
c++ dll cpython pybind11
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
1
Did you also check PYTHONHOME and PYTHONPATH?
– Matthieu Brucher
Nov 17 '18 at 11:10
Yes, I also set the PYTHONHOME and PYTHONPATH but nothing change
– Lê Văn Long
Nov 19 '18 at 7:24
add a comment |
I am trying to build a DLL (using C++) which will be used by a third-party application (TRNEXE.exe). Within the DLL file, I want to embed some Python codes. So I use pybind11 and C/Python API. This works fine with standard modules of Python such as sys, os, traceback, etc. However, when I tried to import a Python module which is found in the site-packages folder, e.g. NumPy, pandas, or other like:
PyRun_SimpleString ("import NumPy") (with C/Python API)
pybind11:: exec ("import NumPy")
or when I import NumPy in an external Python code which is called by a DLL file
The program does not work anymore. It seems the program does not find the packages.
Moreover, I also tried to embed Python code in a C++ console application (it means that I built an executable (not DLL) file from C++ source code which calls some Python codes) and it worked fine with all Python modules.
Does anyone have experience with this kind of problem and have any suggestion for me, please?
PS I set the necessary values in PATH
c++ dll cpython pybind11
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
I am trying to build a DLL (using C++) which will be used by a third-party application (TRNEXE.exe). Within the DLL file, I want to embed some Python codes. So I use pybind11 and C/Python API. This works fine with standard modules of Python such as sys, os, traceback, etc. However, when I tried to import a Python module which is found in the site-packages folder, e.g. NumPy, pandas, or other like:
PyRun_SimpleString ("import NumPy") (with C/Python API)
pybind11:: exec ("import NumPy")
or when I import NumPy in an external Python code which is called by a DLL file
The program does not work anymore. It seems the program does not find the packages.
Moreover, I also tried to embed Python code in a C++ console application (it means that I built an executable (not DLL) file from C++ source code which calls some Python codes) and it worked fine with all Python modules.
Does anyone have experience with this kind of problem and have any suggestion for me, please?
PS I set the necessary values in PATH
c++ dll cpython pybind11
c++ dll cpython pybind11
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
edited Nov 16 '18 at 15:43
kvantour
10.8k41734
10.8k41734
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
asked Nov 16 '18 at 15:36
Lê Văn LongLê Văn Long
1
1
1
Did you also check PYTHONHOME and PYTHONPATH?
– Matthieu Brucher
Nov 17 '18 at 11:10
Yes, I also set the PYTHONHOME and PYTHONPATH but nothing change
– Lê Văn Long
Nov 19 '18 at 7:24
add a comment |
1
Did you also check PYTHONHOME and PYTHONPATH?
– Matthieu Brucher
Nov 17 '18 at 11:10
Yes, I also set the PYTHONHOME and PYTHONPATH but nothing change
– Lê Văn Long
Nov 19 '18 at 7:24
1
1
Did you also check PYTHONHOME and PYTHONPATH?
– Matthieu Brucher
Nov 17 '18 at 11:10
Did you also check PYTHONHOME and PYTHONPATH?
– Matthieu Brucher
Nov 17 '18 at 11:10
Yes, I also set the PYTHONHOME and PYTHONPATH but nothing change
– Lê Văn Long
Nov 19 '18 at 7:24
Yes, I also set the PYTHONHOME and PYTHONPATH but nothing change
– Lê Văn Long
Nov 19 '18 at 7:24
add a comment |
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1
Did you also check PYTHONHOME and PYTHONPATH?
– Matthieu Brucher
Nov 17 '18 at 11:10
Yes, I also set the PYTHONHOME and PYTHONPATH but nothing change
– Lê Văn Long
Nov 19 '18 at 7:24