Setup Error: Cannot open source file: 'fastxml/splitter.cpp': No such file or directory

[nishkalavallabhi]

I am trying to run the setup.py and I am running into the following error:
I am on Windows10. Any idea how to work with this?

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building 'fastxml.splitter' extension
C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.13.26128\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -IC:\Users\svajjala\Python36\include -IC:\Users\svajjala\Python36\include -IC:\Users\svajjala\Python36\lib\site-packages\numpy\core\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.13.26128\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.16299.0\cppwinrt" /EHsc /Tpfastxml/splitter.cpp /Fobuild\temp.win-amd64-3.6\Release\fastxml/splitter.obj -O3 -std=c++11
cl : Command line warning D9002 : ignoring unknown option '-O3'
cl : Command line warning D9002 : ignoring unknown option '-std=c++11'
splitter.cpp
c1xx: fatal error C1083: Cannot open source file: 'fastxml/splitter.cpp': No such file or directory
error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.13.26128\bin\HostX86\x64\cl.exe' failed with exit status 2

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[nishkalavallabhi]

Okay, I did not realize it is written for Python 2+. One of the comments mentioned compatibility with Python 3. I changed a few print statements the errors showed, and one import statement, and switched to Linux. Installation now went smoothly. I will get back if I run into further problems.

[Refefer]

It looks like the actual error is that Visual Studio doesn't support -O3 as a compilation flag.

Can you open up setup.py and remove '-O3' from the compile_args and try compiling again?

[nishkalavallabhi]

It is a python 2.7-3 issue. I fixed syntactic issues in trainer.py and the training process ran without problems even from visual studio. The model was saved. However, I seem to be having trouble with the inferencer now (and I don't know how to edit it as it is a Cython/Pyx file.) Here is the error:

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clf = Inferencer("generated_files\\myfastxml.model")

File "C:\Users\svajjala\Python36\lib\site-packages\fastxml\fastxml.py", line 21, in init
forest = IForest(dname, self.n_trees, self.n_labels)
File "fastxml\inferencer.pyx", line 251, in fastxml.inferencer.IForest.init
File "fastxml\inferencer.pyx", line 290, in fastxml.inferencer.ITree.init
File "fastxml\inferencer.pyx", line 138, in fastxml.inferencer.load_dense_f32
File "fastxml\inferencer.pyx", line 140, in fastxml.inferencer.load_dense_f32
File "fastxml\inferencer.pyx", line 112, in fastxml.inferencer.read_row
TypeError: a bytes-like object is required, not 'str'

[Refefer]

Great debugging, I hope you'll submit a PR when done :)

One of the changes between Python 2 and Python 3 is the way 'bytes' are represented inside python. In inferencer.pyx, it's reading in data as a str instead of bytes, which it appears the struct object needs.

If you'd PR your current work, I'll see if I can get it working on python 3 tonight.

[nishkalavallabhi]

Okay, while attempting to submit a pull request, I spent a lot of time last night trying to understand why my version and the code on github are different. I finally realized the version I am using is the one installed via pip. That perhaps is still in 2.7!

Now, I cloned this repo, and both on Windows and Linux, I see a lot of warnings while installation using setup.py and in the end, when I use the installation to load the module, it shows me:

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from .inferencer import IForest, LeafComputer, Blender, IForestBlender
ModuleNotFoundError: No module named 'fastxml.inferencer'

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Like I said, installing via pip works, but with Python 2.7.