pip install failed

[mingchau]

Hi @mthh:

Today I updated the Python version to 3.7.1, with using
pip install jenkspy
Occurs

ImportError: cannot import name 'pythran_is_numpy_func_supported' from 'Cython.Compiler.Pythran' (C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\Pythran.cp37-win_amd64.pyd)

I did some googling, but unfortunately, there is no solution for this issue! So I'm opening this issue to see if you are going to update this lib? Thanks for your working :)

[mingchau]

FYI, the whole error message:

Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\ADMINI~1\AppData\Local\Temp\pip-install-8d9f5_ne\jenkspy\setup.py", line 32, in
ext_modules=cythonize(exts) if USE_CYTHON else exts,
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Build\Dependencies.py", line 947, in cythonize
ctx = c_options.create_context()
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\Main.py", line 595, in create_context
self.cplus, self.language_level, options=self)
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\Main.py", line 78, in init
from . import Builtin, CythonScope
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\CythonScope.py", line 5, in
from .UtilityCode import CythonUtilityCode
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\UtilityCode.py", line 3, in
from .TreeFragment import parse_from_strings, StringParseContext
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\TreeFragment.py", line 17, in
from .Visitor import VisitorTransform
File "Cython\Compiler\Visitor.py", line 17, in init Cython.Compiler.Visitor
File "C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\ExprNodes.py", line 46, in
from .Pythran import (to_pythran, is_pythran_supported_type, is_pythran_supported_operation_type,
ImportError: cannot import name 'pythran_is_numpy_func_supported' from 'Cython.Compiler.Pythran' (C:\Users\Administrator\Anaconda3\lib\site-packages\Cython\Compiler\Pythran.cp37-win_amd64.pyd)

[mthh]

Thanks for reporting this! I will investigate (unfortunately I don't have a windows platform near me - in case it's related).

Can you tell me what's your Cython version ?
It looks like it's related to how Cython is imported/used in the setup.py file (and maybe related to this issue : cython/cython#2680).

By the way, you remind me that there is no wheel of jenkspy for python 3.7 on PyPI.
I'll also fix that (so at least you will be able to install it directly from the wheel when doing pip install jenkspy).

[mthh]

There is now jenkspy wheels for python 3.7 on windows (32 & 64bits) on PyPi so I guess it should work if you retry pip install jenkspy.

I'm leaving this issue open until I find out what's going on with Cython.

[mingchau]

Hi @mthh:

Glad to hear your quick response!
I installed the Cython 0.29 on my Windows 10 (64bit) OS.

And the installation with the new wheel for Python 3.7 works well! Now all the codes running properly.
Problem solved. Wish you are going to have a nice weekend 👍

[mthh]

I guess what could have triggered this error is now fixed on cython side (and thanks to your issue, wheels of jenkspy are also available for python 3.7 now) so i'm closing this.