PyQt4

[Muhammad Ali]

On Sunday, April 3, 2016 at 12:15:06 PM UTC-7, Michael Torrie wrote:
> On 04/03/2016 12:57 PM, Muhammad Ali wrote:
> > 
> > Hi,
> > 
> > How can we confirm that either  PyQt4 is already installed on LInux machine or not?
> > 
> > Please suggest commands to confirm the already existence of  PyQt4 in the machine.
> 
> Ideally you make a distribution-specific package of the binary in a .deb
> on Debian or an RPM on other distros, and specify that it depends on the
> package that provides PyQt4.  That way when it's installed, modern
> package managers will automatically install the dependencies.
> 
> Alternatively you can use try and except in your python code to attempt
> to import something from PyQt4 and see if it fails or not.  This
> technique is also used to make your code work either PyQt4 or PySide,
> depending on which the user has installed.
> 
> try:
>     from PySide import QtGui
> except ImportError:
>     from PyQt4 import QtGui
> 
> If neither are installed, this little example will end with an ImportError.

Thank you for your suggestions. I tried both but it shows the following error:
IndentationError: expected an indented block

Actually, I have to plot some graphs by using matplotlib and PyQt4 at supercomputer.

Any other suggestion???