Version 6.1 with Python 3.6.1 Anaconda (64-bit)

[rddaz2013]

The normal way..

 pip install coolprop -> gives only 6.0.0 

 pip install -vvv --pre --trusted-host www.coolprop.dreamhosters.com --find-links http://www.coolprop.dreamhosters.com/binaries/Python/ -U --force-reinstall CoolProp
 -> python extension gives (*...so file) an error if imported 

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-c15bcbf8c84c> in <module>()
      1 import numpy as np
      2 import math
----> 3 from CoolProp.CoolProp import PropsSI
      4 from __future__ import print_function
      5 import CoolProp.CoolProp as CP

~/anaconda3/lib/python3.6/site-packages/CoolProp/__init__.py in <module>()
     14     quit()
     15 
---> 16 from .CoolProp import AbstractState
     17 from . import CoolProp
     18 from . import HumidAirProp

ImportError: /home/rened/anaconda3/lib/python3.6/site-packages/CoolProp/CoolProp.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZTVNSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEEE

only working install with...
conda install -c bryanwweber coolprop

[ibell]

What version of OS do you have? I use this method on *nix all the time.

[rddaz2013]

This error was on Ubuntu 16.04.3 LTS 64-Bit. (running jupyterlab)
other Win7 installation of coolprop over pip works well.

[ibell]

I use ubuntu all the time, and don't usually run into problems, but it can sometimes be tricky. Have you tried to install libgcc: https://github.com/usnistgov/ChebTools#prerequisites ?

…

On Sat, Feb 24, 2018 at 12:13 AM, Rene Dworschak ***@***.***> wrote: This error was on Ubuntu 16.04.3 LTS 64-Bit. other Win7 installation of coolprop over pip works well. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1654 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABxha66kYKFJsQSMPn4kW68bowogkVtoks5tX7aGgaJpZM4SRWAs> .

[thorade]

To be absolutely sure you use the correpsonding pip for your python (and not the system pip),
could you please also try
python -m pip ...
from the Anaconda prompt.

Also, compare the output of pip --version and python -m pip --version from the normal terminal and from the Anaconda prompt respectively, and possibly also the output of which pip.

https://docs.python.org/3/installing/#work-with-multiple-versions-of-python-installed-in-parallel

Also, this should be fixed once 6.2 is released:
https://github.com/CoolProp/CoolProp/milestone/9
#1604

[ibell]

And/or you can provide the absolute path to pip executable

…

On Mar 5, 2018 5:31 AM, "Matthis Thorade" ***@***.***> wrote: To be absolutely sure you use the correpsonding pip for your python, could you please also try python -m pip ... from the Anaconda prompt. https://docs.python.org/3/installing/#work-with- multiple-versions-of-python-installed-in-parallel — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1654 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABxha8QPPk13mY37MKBW_ObMaLCJG61Cks5tbTArgaJpZM4SRWAs> .

[rddaz2013]

from Ubuntu 16.04.3 LTS 64-Bit

pip --version
pip 9.0.1 from /home/rened/anaconda3/lib/python3.6/site-packages (python 3.6)

python -m pip --version
pip 9.0.1 from /home/rened/anaconda3/lib/python3.6/site-packages (python 3.6)

[rddaz2013]

from WIN10

pip --version
pip 9.0.1 from F:\Anaconda3\lib\site-packages (python 3.6)

python -m pip --version
pip 9.0.1 from F:\Anaconda3\lib\site-packages (python 3.6)

[thorade]

That looks both good 👍
so the error is elsewhere 😞

[thorade]

I added this ticket to Milestone 6.2, because the new release will include a Py36 package (and a source release as fallback).

[henningjp]

I have the same problem under Python 3.6 on Win10. Standard pip install only gives me 6.0.0. It’s like there’s no build wheel for 6.1.0 on Python 3.6....

If I want 6.1.0, I have to build my own from that git release tag. Grabbing the nightly 6.1.1dev build works fine, though.

[thorade]

@henningjp Your error is different:
There is no py36 package for Coolprop, so py36 tries to install from source.
But there also is no source package for Coolprop 6.1, only for Coolprop 6.0.
So py36 tries to install 6.0 and fails.

The real soultion would be to publish a py36 package, either for Coolprop 6.1 or even better for 6.2.
To be safe for the future (e.g. py37 will be released in summer), a source package should be included!!

Until then, the recommended workaround is to use the nightly builds, and that should just work.
It does work for me, on Windows 10, but the issue described here is that it failed on Ubuntu 16.04.

[ibell]

Python 3.6 binary wheels are now being built on all platforms, and should be pip installable as of version 6.2