import qutip problem

[tami...@gmail.com]

To whom it will concern

My OS system is MacOS 10.12.6 

I have installed Qutip using " conda install qutip" successful from the Terminal.  The successful message is like this

# All requested packages already installed.

# packages in environment at /Users/myusername/anaconda:

# qutip                     4.2.0               np113py36_2    conda-forge   

Howerver, when I use python to import the qutip, I always get a error message: No module named qutip.cy.spmatfuncs

Is there anyone who can help me out? Thanks very much.

The following is the command I input in the Python Input line.  Thanks for your kindness help.

In [1]: from qutip import *

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

ModuleNotFoundError                       Traceback (most recent call last)

<ipython-input-1-674d9281af88> in <module>()

----> 1 from qutip import *

/Users/tamintai/qutip/__init__.py in <module>()

    169 

    170 # core

--> 171 from qutip.qobj import *

    172 from qutip.states import *

    173 from qutip.operators import *

/Users/tamintai/qutip/qobj.py in <module>()

     58 import qutip.settings as settings

     59 from qutip import __version__

---> 60 from qutip.fastsparse import fast_csr_matrix, fast_identity

     61 from qutip.cy.ptrace import _ptrace

     62 from qutip.permute import _permute

/Users/tamintai/qutip/fastsparse.py in <module>()

    404 #Need to do some trailing imports here

    405 #-------------------------------------

--> 406 from qutip.cy.spmath import (zcsr_transpose, zcsr_adjoint, zcsr_mult)

/Users/tamintai/qutip/cy/__init__.py in <module>()

----> 1 from qutip.cy.spmatfuncs import *

ModuleNotFoundError: No module named 'qutip.cy.spmatfuncs'

===============================================message end=============================================== 

Best regards

Tamin

[Tamin Tai]

To whom it will concern 

I further check if the following command can work by running the following.  I still get error.   I really have no idea.  I appreciate your time to reply my question in advance. Thanks.

[2] from qutip import *

about()

=====================message begin===========================

AttributeError                            Traceback (most recent call last)

/Users/tamintai/qutip/__init__.py in <module>()

     46     __IPYTHON__

---> 47     qutip.settings.ipython = True

     48 except:

AttributeError: module 'qutip' has no attribute 'settings'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)

<ipython-input-2-ef0e20331cfc> in <module>()

----> 1 from qutip import *

      2 about()

      3 

/Users/tamintai/qutip/__init__.py in <module>()

     47     qutip.settings.ipython = True

     48 except:

---> 49     qutip.settings.ipython = False

     50 

     51 # -----------------------------------------------------------------------------

AttributeError: module 'qutip' has no attribute 'settings'

=========================message end ==========================================

[Paul Nation]

What directory are you running it from?

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[Tamin Tai]

Dear Paul 

I think I put the Qutip-4.2.0 folder under the USERS folders as shown the attached image. 

Then I run the Anaconda Navigator and open the IP[y] as usual.   I don't  create a qutip-env and directly put qutip under the conda environment root as shown in the 2nd attached picture. I think its directory is " users/tamintai/anaconda.  

Is everything right?  Sorry I am quite new for python.

Best regards

Tamin

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[Paul Nation]

You installed QuTiP via conda, so there is no need for having the QuTiP folder or using the Anaconda interface.  Just open a terminal and run IPython.  Make sure that the directory is NOT the QuTiP folder.

-P

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[Tamin Tai]

Dear Paul

Thank you very much.  I solve the problem.   Thanks again.

Best regards

Tamin

[Paul Nation]

No worries.

-P

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