josh146/pyctqw

Distributed memory CTQW Fortran library and Python module

### Hello 👋

I'm a [computational quantum physicist](https://scholar.google.com/citations?user=pEj09c4AAAAJ) and
[software developer](https://github.com/josh146), working to build accessible, open-source quantum
software at [Xanadu](https://xanadu.ai).

### At a glance 👀

* I am a lead developer of [PennyLane](https://pennylane.ai/), a library for differentiable
  programming of quantum computers.
  
* I sit on the advisory board of the [Unitary Fund](https://unitary.fund), a non-profit working to create
  an accessible quantum technology ecosystem.
  
* I hold a PhD in quantum computation from the [University of Western
  Australia](https://www.uwa.edu.au/research/ems-research-clusters/quantum-information-simulation-and-algorithms).
  
* I sometimes moonlight as an illustrator.

pyctqw's Issues

what numpy version and PETSC_ARCH should I take?

Hi, I'm trying to install pyCTQW package via pip, and now I have a problem, the error information is:

Error: Element in COMPLEX(8) array constructor at (1) is REAL(8)

My system is Ubuntu 14.04, and I use petsc-3.4.5, slepc-3.4.4, openmpi-1.8.4, petsc4py-3.4. And I put them into the same path and when run ./configure, I add the prefix like /usr/local/PACKAGE_NAME.

I think the error maybe caused by error numpy version(I've tried the 1.6.0, 1.8.2 and so on) or the error PETSC_ARCH(I've tried linux-complex and linux-gnu).

Could you please give me some advice to install the package successfully? Thank you very much for your kind attention.

Python 2.7 dependency issue

Hello, I'm not sure if this is supported anymore, but I'm a PHD student working with continuous-time quantum walks and I was very interested in experimenting with your simulator.

I was able to install every dependency yesterday with python 3, however when I tried to import the package in the notebook, it said that the module ctqw.py was not found.

That's when i realized that pyCTQW was written in python 2.7, however i got the following error installing mpi4py
ERROR: Could not build wheels for mpi4py which use PEP 517 and cannot be installed directly

I then further noticed the depreaction warning
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.

And this is why i am opening this issue. Is it possible to use your simulator with python 3? If not, is there a way to install these dependencies?

Thank you!