Dear Anton, Thanks for the useful info that the problem is caused by the failure of installation. I tried to reinstall the Kwant using python3 setup.py install --user Now the kwant runs successfully. Best, Happy new year and wishes you a great success with your KWANT project! Shizeng
On Tue, Jan 3, 2017 at 3:19 PM, Anton Akhmerov <anton.akhmerov...@gmail.com> wrote: > Dear Shizeng, > > The error messages indicate that the compilation didn't work > successfully. While I'm not entirely sure what goes wrong, I'd like to > suggest a simpler alternative. If you are using anaconda on a *nix > system, the most straightforward way to obtain kwant is to use kwant > provided via the community-maintained conda-forge channel. Just > execute > > conda install -c conda-forge kwant > > and you are done. > > Best, > Anton > > On Tue, Jan 3, 2017 at 10:51 PM, Shizeng Lin <lin.shiz...@gmail.com> wrote: >> Hi, >> I try to install kwant on a supercomputer in my institute. I do not >> have root access, so I built the package from source. >> I am using python/3.5-anaconda-4.1.1. >> I installed tinyarray and kwant as a user module, with the following command >> >> pip install --user tinyarray/ >> pip install --user kwant/ >> >> The installation completed successfully. >> >> But when I try to run the test >> >> python -c 'import kwant; kwant.test()' >> >> I got the following error message: >> >> ========================Error message========================= >> Traceback (most recent call last): >> >> File "/turquoise/users/shizeng/kwant/kwant/__init__.py", line 14, in >> <module> >> >> from . import _system >> >> ImportError: cannot import name '_system' >> >> >> During handling of the above exception, another exception occurred: >> >> >> Traceback (most recent call last): >> >> File "<string>", line 1, in <module> >> >> File "/turquoise/users/shizeng/kwant/kwant/__init__.py", line 22, in >> <module> >> >> raise ImportError(msg) >> >> ImportError: Error importing Kwant: >> >> You should not try to import Kwant from its source directory. >> >> Please exit the Kwant source distribution directory, and relaunch >> >> your Python intepreter from there. >> >> ==========================End================================= >> I followed the instruction to launch the test at different directory. >> but still got the same error message. I am appreciated if someone can >> help me to figure out the problem. >> Thanks. >> Shizeng
