Issue with pyside about brightness

[elmerehbi]

@apandada1 Anaconda as @LordAmit mentioned is a Python distribution packaged for scientists and analysts. It installs in the users home directory and changes Python's path to Anacondas' python (in .bashrc, or zshrc, etc...) SO basically when I am calling python I am using the Anaconda Python and its packages.

Using apt-get will install the packages in the original Python directories which are not being used anymore. Instead pip and conda (latter is Anaconda's package manager) install the package in the Anaconda python library directories.

IN short: the apt-get install doesn't get used.

[archisman-panigrahi]

When user installs it manually, he can run pip install pyside. But a .deb package (which will be in the PPA) cannot run pip commands while installing, it resolved dependencies using apt-get. The only simple solution is to run the app with usr/bin/python so that it will work with apt-get's pyside

[LordAmit]

I am unfamiliar with the term Anaconda. A quick google search shows that it is probably a python distribution focusing on analytics.

I will update the readme and add instructions of installing PySide through pip 😄

Thank you for pointing this out.

[archisman-panigrahi]

I could not understand the problem. Please explain

[LordAmit]

Just that sudo apt-get install python-pyside was not enough for his system to use the app.

[LordAmit]

@elmerehbi , I have updated the Readme.md file. If you the instructions are better now and solves this problem - close this issue maybe?

[archisman-panigrahi]

Is there any command to force regular Python?
It is not easy to add the following feature to deb package:
If Anaconda Python is installed : pip install pyside after installation, (this will require adding a bash script)
otherwise, apt-get install python-pyside

[elmerehbi]

@apandada1 @LordAmit I get you. You could replace apt-get install pyside with pip install pyside as in the case of Anaconda the path to Python is changed and hence the new pip is going to be used automatically. No need to use conda.

So instead of the system's package manager (apt-get here) use Python's package manager pip

[archisman-panigrahi]

No, that's not the solution.
I will have to add dependency in the "control" file in the .deb package.

The dependencies asked here will be installed via apt (dpkg). We cannot use pip here.

What I wanted to know: Is there any specific command which will invoke original Python?
Suppose python --option src/init.py?

Or, can it be done by replacing #!/usr/bin/python with path/to/original/python in the init.py file?

[elmerehbi]

@apandada1 I just checked the init.py & it includes /usr/bin/python. So there's no need to do anything as it points to the system's Python distribution. The only thing that caused a problem was calling python before the script:

python /src/init.py # returns the error I posted above
./src/init.py # works like a charm

Moreover, since I've got the ppa added I have the older version working too without the need for pyside in Anaconda's python.

[LordAmit]

@apandada1 , we are talking about the version 2 here.
What we can do, is create a checking mechanism for the existence of Pyside in user's python distribution when the app is run for the first time after installation through the PPA, and then automatically install python-pyside using pip if required. Or ask user to install Python-pyside using pip.

[elmerehbi]

@apandada1 Doesn't running it with ./ suffice instead of explicitly calling python given that the python path is already set in the script?

[archisman-panigrahi]

We can mark it as executable and directly run it (without python init.py) (that's how v1 PPA works too) . Then there will be no need of checking mechanism, and the problem will be fixed.
Also, @LordAmit How can we ask the user to install using pip if the GUI of the app does not even run? By the way, the issue seems to be solved.

[LordAmit]

The App GUI runs using PySide, but the app itself can be loaded from a separate script which is not dependent on PySide. That part will execute just like any other Python script.

[elmerehbi]

@LordAmit @apandada1 The solution to this issue is very simply:

sudo apt-get install pip 
pip install pyside

No need for sudo apt-get install pyside as pip used will depend on which python is being used by default:

which python
which pip

In my case this returns:

/home/user/anaconda2/bin/python
/home/user/anaconda2/bin/pip

To get an idea of my installation, here are my Python paths:

where python
/home/user/anaconda2/bin/python
/usr/bin/python

Installing Anaconda will install the Anacconda Python distribution in the sers home directory including all modules. Moreover, when calling python it will now call Anaconda's python.

[elmerehbi]

Ah ok. Indeed /usr/bin/python should work.