ImportError: No module named _egsphant

[robmarkcole]

Attempting to run plot_isodose.py and get the error

ImportError: No module named _egsphant

from EGSPhant.py. _egsphant appears to be a .c file in the egsnrcpy folder. Not sure what to do next..
Thanks
Robin

[prehensilecode]

Did you run the installation with "python setup.py install"? This package uses C modules which need to be compiled by the setup/install process.

[robmarkcole]

Repeated install to be sure, looks fine, as below

running install
running build
running build_py
running build_ext
running install_lib
running install_egg_info
Removing /Users/robincole/Anaconda/anaconda/lib/python2.7/site-packages/egsnrc-0.1-py2.7.egg-info
Writing /Users/robincole/Anaconda/anaconda/lib/python2.7/site-packages/egsnrc-0.1-py2.7.egg-info

I have a file EGSPhant.pyc in the folder egsnrc, which I presume was the result of compiling the c file _egsphant.c

[prehensilecode]

Well, I'm afraid I won't be able to look at this to fix. This code is > 8 years old, and I am no longer working in the field of radiation oncology.

At a guess, it should not be too difficult to fix, since it seems like an issue with packaging. But there have been quite a lot of changes since I last worked on this code.

[robmarkcole]

OK if I get it working I will post an update.
Cheers

[robmarkcole]

Tried on my windows PC at work, I get a different error

Solution described here http://www.pandastack.com/unable-to-find-vcvarsall-bat-how-to-fix-on-windows/

I then install the MS VS C++ compiler from https://www.microsoft.com/en-us/download/confirmation.aspx?id=44266

After restarting my shell, get the same error in install.
I would then install VS 2015 from https://www.visualstudio.com/post-download-vs?sku=community&clcid=0x409&downloadrename=true#
however I do not have admin rights on my work PC so cannot do this.

Perhaps this will help others.

I will look into this http://pythonwheels.com/

[prehensilecode]

On macOS 10.15.7, using the default Python 2.7:

❯ python --version
Python 2.7.16
❯ python setup.py build
running build
running build_py
creating build
creating build/lib.macosx-10.15-x86_64-2.7
creating build/lib.macosx-10.15-x86_64-2.7/egsnrc
copying egsnrc/__init__.py -> build/lib.macosx-10.15-x86_64-2.7/egsnrc
copying egsnrc/EGSPhant.py -> build/lib.macosx-10.15-x86_64-2.7/egsnrc
copying egsnrc/MCDose.py -> build/lib.macosx-10.15-x86_64-2.7/egsnrc
running build_ext
building '_mcdose' extension
creating build/temp.macosx-10.15-x86_64-2.7
creating build/temp.macosx-10.15-x86_64-2.7/egsnrc
cc -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -iwithsysroot /usr/local/libressl/include -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c egsnrc/_mcdose.c -o build/temp.macosx-10.15-x86_64-2.7/egsnrc/_mcdose.o
cc -bundle -undefined dynamic_lookup -Wl,-F. -L/AppleInternal/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.Internal.sdk/usr/local/libressl/lib build/temp.macosx-10.15-x86_64-2.7/egsnrc/_mcdose.o -o build/lib.macosx-10.15-x86_64-2.7/egsnrc/_mcdose.so
ld: warning: directory not found for option '-L/AppleInternal/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.Internal.sdk/usr/local/libressl/lib'
building '_egsphant' extension
cc -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -iwithsysroot /usr/local/libressl/include -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c egsnrc/_egsphant.c -o build/temp.macosx-10.15-x86_64-2.7/egsnrc/_egsphant.o
cc -bundle -undefined dynamic_lookup -Wl,-F. -L/AppleInternal/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.Internal.sdk/usr/local/libressl/lib build/temp.macosx-10.15-x86_64-2.7/egsnrc/_egsphant.o -o build/lib.macosx-10.15-x86_64-2.7/egsnrc/_egsphant.so
ld: warning: directory not found for option '-L/AppleInternal/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.Internal.sdk/usr/local/libressl/lib'

Build is successful, and puts resulting .so and .py files in:

❯ cd build/lib.macosx-10.15-x86_64-2.7/egsnrc
❯ ls
EGSPhant.py	MCDose.py	__init__.py	_egsphant.so	_mcdose.so

Then

❯ python setup.py install --user
running install
running build
running build_py
running build_ext
running install_lib
creating /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc
copying build/lib.macosx-10.15-x86_64-2.7/egsnrc/__init__.py -> /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc
copying build/lib.macosx-10.15-x86_64-2.7/egsnrc/_egsphant.so -> /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc
copying build/lib.macosx-10.15-x86_64-2.7/egsnrc/_mcdose.so -> /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc
copying build/lib.macosx-10.15-x86_64-2.7/egsnrc/EGSPhant.py -> /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc
copying build/lib.macosx-10.15-x86_64-2.7/egsnrc/MCDose.py -> /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc
byte-compiling /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc/__init__.py to __init__.pyc
byte-compiling /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc/EGSPhant.py to EGSPhant.pyc
byte-compiling /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc/MCDose.py to MCDose.pyc
running install_egg_info
Writing /Volumes/Homes/Users/myname/Library/Python/2.7/lib/python/site-packages/egsnrc-0.1-py2.7.egg-info

I'm afraid I can't help with compiling on Windows: I only work on Linux or macOS.

Perhaps installing gcc (or clang) on Windows will help.