Problem with setting up the ipython profile for sfepy

[Gary Roach]

Debian  (stretch) Linux OS
Using Anaconda3
pip and conda used for installations

I created profile_sfepy directory and content by running ipython profile create sfepy from the /root/.ipython directory. This created the subdirectory profile_sfepy in the .ipython directory. In the profile_sfepy directory, I then tried to edited the ipython_config.py file as suggested in section 2.6 of the tutorial.

First problem:
  There is no c = get_config() line in the file. The unedited file is attached.
Second:
  exec_lines = [ ] does not exist. There is a:
  ## lines of code to run at IPython startup.
  #c.InteractiveShellApp.exec_lines = [ ] .
I put the exec_lines =  code directly into c.InteractiveShellApp.exec_lines "tuple?"
For the rest I found  places that fit.

When running ipython --profile=sfepy I got the following error:

ImportError: Matplotlib backend_wx and backend_wxagg require wxPython >=2.8.12
/root/anaconda3/lib/python3.5/site-packages/traits/etsconfig/etsconfig.py:429: UserWarning: Environment variable "HOME" not set, setting home directory to /tmp
  (environment_variable, parent_directory))

I attempted to install wxpython with conda install wxpython  and got the following:
  UnsatisfiableError: The following specifications were found to be in conflict:
  - python 3.5*
  - wxpython

I ran conda info wxpython and found that wxpython depends on python 2.7. I use python 3.5 or 6 exculsively.

pip can't find the wxpython at all.

What now?

yours

Gary R.

[Robert Cimrman]

Hi Gary,

the instructions are probably obsolete now (works on ubuntu 14.04, not sure
about newer distros). Cf. https://github.com/sfepy/sfepy/issues/379, see below
for further information.

On 03/27/2017 10:52 PM, Gary Roach wrote:
> Debian (stretch) Linux OS
> Using Anaconda3
> pip and conda used for installations
>
> I created profile_sfepy directory and content by running ipython profile
> create sfepy from the /root/.ipython directory. This created the
> subdirectory profile_sfepy in the .ipython directory. In the profile_sfepy
> directory, I then tried to edited the ipython_config.py file as suggested
> in section 2.6 of the tutorial.
>
> First problem:
> There is no c = get_config() line in the file. The unedited file is
> attached.
> Second:
> exec_lines = [ ] does not exist. There is a:
> ## lines of code to run at IPython startup.
> #c.InteractiveShellApp.exec_lines = [ ] .
> I put the exec_lines = code directly into c.InteractiveShellApp.exec_lines
> "tuple?"
> For the rest I found places that fit.

Seems OK.

> When running ipython --profile=sfepy I got the following error:
>
> ImportError: Matplotlib backend_wx and backend_wxagg require wxPython
>> =2.8.12
> /root/anaconda3/lib/python3.5/site-packages/traits/etsconfig/etsconfig.py:429:
> UserWarning: Environment variable "HOME" not set, setting home directory to
> /tmp
> (environment_variable, parent_directory))
>
> I attempted to install wxpython with conda install wxpython and got the
> following:
> UnsatisfiableError: The following specifications were found to be in
> conflict:
> - python 3.5*
> - wxpython

You do not need to use the wx backend, just remove that line from the config.
The reason it was there was to allow non-blocking mayavi windows. The
configuration to achieve that might differ on new distros.

> I ran conda info wxpython and found that wxpython depends on python 2.7. I
> use python 3.5 or 6 exculsively.
>
> pip can't find the wxpython at all.
>
> What now?

Try removing the

'import matplotlib as mpl',
'mpl.use("WXAgg")',

lines.

Also note, that you can just run ipython with the default profile, and do the
imports from exec_lines manually in order to try the tutorial. Then check the
examples with "interactive" in their names - those show how to import things
properly in a script.

Does that help?

Cheers,
r.

[Gary Roach]

Thanks for the info Robert

Must be rough keeping up with all of the changes. Your instructions filxed the problems. Now on to the next step.

Thanks again

Gary R.

[Robert Cimrman]

On 29.3.2017 19:43, Gary Roach wrote:
> Thanks for the info Robert
>
> Must be rough keeping up with all of the changes. Your instructions filxed
> the problems. Now on to the next step.

Well, it's a very lazy evaluation - such problems get fixed when somebody
reports them (or submits a PR) :)

r.