Update python doc (#5803)

Several improvement and adjustments to the Python documentation

- applied autopep8
- add summary example
- use references to reference other classes and methods

ApplicationCode/GrpcInterface/Python/rips/plot.py

@@ -7,21 +7,20 @@ from rips.pdmobject import PdmObject
 from rips.generated.pdm_objects import PlotWindow, Plot
 from rips.pdmobject import add_method
 
+
 @add_method(PlotWindow)
 def export_snapshot(self, export_folder='', file_prefix='', output_format='PNG'):
     """ Export snapshot for the current plot
-        
+
     Arguments:
         export_folder(str): The path to export to. By default will use the global export folder
         prefix (str): Exported file name prefix
         output_format(str): Enum string. Can be 'PNG' or 'PDF'.
-            
+
     """
     return self._execute_command(
         exportSnapshots=Cmd.ExportSnapshotsRequest(type='PLOTS',
-                                                    prefix=file_prefix,
-                                                    viewId=self.id,
-                                                    exportFolder=export_folder,
-                                                    plotOutputFormat=output_format))
-
-   
+                                                   prefix=file_prefix,
+                                                   viewId=self.id,
+                                                   exportFolder=export_folder,
+                                                   plotOutputFormat=output_format))