qgis processing - Can vector layer get start point and end point of line using PyQGIS?

I want to make a buffer on the start or end point of the line and not the line itself.

Is there some thing in QGIS python plugin development that can get me the points?

Answer

You can use v.to.points Processing Toolbox Algorithm.

At the next image, it can be observed:

• Filtering by v.to.points


• Selecting 'line' (shapefile used in this example) in 'Input lines layer'


• Marking 'Write line nodes' option

After click in Run, I got "start and end points of each feature" in the shapefile line layer.

However, by using 'Write line vertices' option you can get all points: