Hi David, how are you? I hope you are well.

I tried to install the library but I got this error:

Collecting costsensitive Using cached https://files.pythonhosted.org/packages/08/01/9d8a0c5c07db31ba8b17ccc0506db0d899ef342a9a57fa937b9b8b01c066/costsensitive-0.1.2.10.tar.gz Requirement already up-to-date: cython in /home/notebooks/venv/lib/python3.6/site-packages (from costsensitive) Requirement already up-to-date: joblib>=0.13 in /home/notebooks/venv/lib/python3.6/site-packages (from costsensitive) Collecting numpy (from costsensitive) Downloading https://files.pythonhosted.org/packages/19/b9/bda9781f0a74b90ebd2e046fde1196182900bd4a8e1ea503d3ffebc50e7c/numpy-1.17.0-cp36-cp36m-manylinux1_x86_64.whl (20.4MB) 100% |████████████████████████████████| 20.4MB 96kB/s s eta 0:00:01 Requirement already up-to-date: scipy in /home/notebooks/venv/lib/python3.6/site-packages (from costsensitive) Building wheels for collected packages: costsensitive Running setup.py bdist_wheel for costsensitive ... error Complete output from command /home/notebooks/venv/bin/python3 -u -c "import setuptools, tokenize;file='/tmp/pip-build-652t1zkx/costsensitive/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" bdist_wheel -d /tmp/tmp6frkpu00pip-wheel- --python-tag cp36: usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...] or: -c --help [cmd1 cmd2 ...] or: -c --help-commands or: -c cmd --help

error: invalid command 'bdist_wheel'

Failed building wheel for costsensitive Running setup.py clean for costsensitive Failed to build costsensitive Installing collected packages: numpy, costsensitive Found existing installation: numpy 1.16.4 Uninstalling numpy-1.16.4: Successfully uninstalled numpy-1.16.4 Running setup.py install for costsensitive ... error Complete output from command /home/notebooks/venv/bin/python3 -u -c "import setuptools, tokenize;file='/tmp/pip-build-652t1zkx/costsensitive/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /tmp/pip-08s1e5tx-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/notebooks/venv/include/site/python3.6/costsensitive: running install running build running build_py creating build creating build/lib.linux-x86_64-3.6 creating build/lib.linux-x86_64-3.6/costsensitive copying costsensitive/init.py -> build/lib.linux-x86_64-3.6/costsensitive running build_ext cythoning costsensitive/vwrapper.pyx to costsensitive/vwrapper.c /home/notebooks/venv/lib/python3.6/site-packages/Cython/Compiler/Main.py:369: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: /tmp/pip-build-652t1zkx/costsensitive/costsensitive/vwrapper.pyx tree = Parsing.p_module(s, pxd, full_module_name) building 'costsensitive._vwrapper' extension creating build/temp.linux-x86_64-3.6 creating build/temp.linux-x86_64-3.6/costsensitive x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/home/notebooks/venv/lib/python3.6/site-packages/numpy/core/include -I/home/notebooks/venv/include -I/usr/include/python3.6m -c costsensitive/vwrapper.c -o build/temp.linux-x86_64-3.6/costsensitive/vwrapper.o -O2 -march=native -std=c99 -fopenmp costsensitive/vwrapper.c:4:10: fatal error: Python.h: No such file or directory

include "Python.h"

          ^~~~~~~~~~
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

----------------------------------------

Command "/home/notebooks/venv/bin/python3 -u -c "import setuptools, tokenize;file='/tmp/pip-build-652t1zkx/costsensitive/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /tmp/pip-08s1e5tx-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/notebooks/venv/include/site/python3.6/costsensitive" failed with error code 1 in /tmp/pip-build-652t1zkx/costsensitive/

That’s a weird error.

Do you have libpython installed? (conda install libpython if you use anaconda)
Do you have the Python executable/binary folder path in a global environment variable called PATH?
Do you have different parallel Python installations? Are you trying to use a root-Python install while running Python as a user?

Also, if you're running this in a virtual environment, did you install basic packages like setuptools or wheel?

Yes, Yes, and Yes. Also I tried to install in a windows computer, locally and I got this error (I have alreadey install Vs build tools):

n32.whl Building wheels for collected packages: costsensitive Building wheel for costsensitive (PEP 517) ... error ERROR: Command errored out with exit status 1: command: 'c:\users\appdata\local\programs\python\python37-32\python.exe' 'c:\users\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\pep517_in_process.py' build_wheel 'C:\Users\AppData\Local\Temp\tmppyx11qmn' cwd: C:\Users\AppData\Local\Temp\pip-install-b1xgqch8\costsensitive Complete output (13 lines): running bdist_wheel running build running build_py creating build creating build\lib.win32-3.7 creating build\lib.win32-3.7\costsensitive copying costsensitiveinit.py -> build\lib.win32-3.7\costsensitive running build_ext cythoning costsensitive/vwrapper.pyx to costsensitive\vwrapper.c building 'costsensitive._vwrapper' extension C:\Users\AppData\Local\Temp\pip-build-env-erkaimxz\overlay\Lib\site-packages\Cython\Compiler\Main.py:369: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: C:\Users\AppData\Local\Temp\pip-install-b1xgqch8\costsensitive\costsensitive\vwrapper.pyx tree = Parsing.p_module(s, pxd, full_module_name) error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/

ERROR: Failed building wheel for costsensitive Running setup.py clean for costsensitive Failed to build costsensitive ERROR: Could not build wheels for costsensitive which use PEP 517 and cannot be installed directly

Well, the issue is that for some reason the compiler cannot find Python’s C headers. It’s not really related to this package as you’ll experience the same error if e.g. you try to run MCMC samplers from pymc3 that compile on-the-fly.

For MSVC by the way you specifically need to install the msvc140 tools, which is not selected by default (nowadays getting an MSVC or MSVC build-tools installation to work properly with Python is an odyssey, and if you don’t set it as default you’ll still need to compile with python setup.py install --compiler=msvc).

The solutions I see are:

Install an older pure-Python version of this package (pip install costsensitive=0.1.1).
Edit the setup.py file and add the path to those headers as option -I. I’m not sure if it would require additional libraries passed to -l: though.
Make sure that the default python that is called when you call python in the console has its own separate libpython.
Use conda, explicitly activate the python environment in which you want it (source activate <env. name> in linux, same without the source in windows), install libpython in that specific environment, and try again.

I've now run into this issue when using linux with a python install from system repositories.

The solution is to install system packages named like libpython and python-dev or python-devel, or to stick to anaconda.

david-cortes / costsensitive

Installation problem #5

include "Python.h"