[Eric] Support network for eric, conda, and internet connection

[Christos Sevastiadis]

Hi to all,

Unfortunately the settings of Virtual Environment and Environment (which
should be renamed to Environment Variables, because it is a little bit
confusing with so many environments in the same dialog) doesn't affect the
running and the debugging of a script.

On the other hand, just selecting the Virtual Environment in Run Script and
Debug Script dialog windows everything is going as expected. Running the
following script:
import sys
import numpy as np
print(sys.version)
print(sys.exec_prefix)
print(sys.executable)
print(sys.path)
t = np.linspace(0, 2*np.pi)
w = np.sin(t)
print(w)

The output to the Shell form is:
Python 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:27:44) [MSC v.1900
64 bit (AMD64)] on Hades, Standard
>>> 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:27:44) [MSC v.1900 64
bit (AMD64)]
C:\dev\Miniconda3\envs\scientific
C:\dev\Miniconda3\envs\scientific\python.exe
['', 'G:\\My Drive\\Python\\python-projects\\Python37_test_project',
'C:\\dev\\Miniconda3\\envs\\eric6\\Lib\\site-packages\\eric6\\DebugClients\\Python',
'C:\\dev\\Miniconda3\\Lib\\site-packages\\omniORBpy-4.2.2\\lib\\python',
'C:\\dev\\Miniconda3\\Lib\\site-packages\\omniORBpy-4.2.2\\lib\\x86_win32',
'C:\\WINDOWS\\System32',
'C:\\dev\\Miniconda3\\envs\\scientific\\python36.zip',
'C:\\dev\\Miniconda3\\envs\\scientific\\DLLs',
'C:\\dev\\Miniconda3\\envs\\scientific\\lib',
'C:\\dev\\Miniconda3\\envs\\scientific',
'C:\\dev\\Miniconda3\\envs\\scientific\\lib\\site-packages']
[ 0.00000000e+00  1.27877162e-01  2.53654584e-01  3.75267005e-01
  4.90717552e-01  5.98110530e-01  6.95682551e-01  7.81831482e-01
  8.55142763e-01  9.14412623e-01  9.58667853e-01  9.87181783e-01
  9.99486216e-01  9.95379113e-01  9.74927912e-01  9.38468422e-01
  8.86599306e-01  8.20172255e-01  7.40277997e-01  6.48228395e-01
  5.45534901e-01  4.33883739e-01  3.15108218e-01  1.91158629e-01
  6.40702200e-02 -6.40702200e-02 -1.91158629e-01 -3.15108218e-01
 -4.33883739e-01 -5.45534901e-01 -6.48228395e-01 -7.40277997e-01
 -8.20172255e-01 -8.86599306e-01 -9.38468422e-01 -9.74927912e-01
 -9.95379113e-01 -9.99486216e-01 -9.87181783e-01 -9.58667853e-01
 -9.14412623e-01 -8.55142763e-01 -7.81831482e-01 -6.95682551e-01
 -5.98110530e-01 -4.90717552e-01 -3.75267005e-01 -2.53654584e-01
 -1.27877162e-01 -2.44929360e-16]

I don't  set any Working Directory or Environment (Variables) such as PATH or
PYTHONPATH. Of course, Alex, and as Detlev said, for special cases somebody
should set the aforementioned environment variables (e.g. set
PATH=C:\dev\Miniconda3\) instead of Working Directory.

Alex, the Anaconda repository has not full upgraded for Python 3.7 and
numpy package
for Python 3.7 is not ready yet for installation. I cannot import Anaconda
numpy in a Python 3.7 conda Virtual Environment, in Eric and anywhere else.
Also, I have been using also Intel Distribution for Python with NumPy
successfully in Eric. Finally, I tested a Conda Virtual Environment with
Python 3.7 with numpy installed not with conda (Anaconda repository) but
with pip (Pypi repository)and everything in Eric was ok.

Detlev, I don't know if there is a problem or I don't know how to use the
settings in the Debugger Options dialog window, but I expected that every
Project should have its Virtual Environment and Python interpreter saved
separately. Debugger Options seem to be saved on a Eric IDE level and not
on Project level. Also, as I see with my experimentation, the Conda Virtual
Environments are probably the same with the virtualenv ones. It should be
nice to integrate the conda functionality in Eric, but it is not so important
for the moment. conda also offers pip functionality with extra features. I
use both of them.

Sincerely,
Christos Sevastiadis
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