layer = iface.activeLayer()
print(layer)
all_features = layer.getFeatures()
layer.startEditing()
for pipe in all_features:

        if pipe['name'] == '1212_1211':
            print('found it ********n  ')
            pipe_id = pipe.id()

            geom = pipe.geometry()
            print(geom)
            new_feat = QgsFeature()
            geom = pipe.geometry().asPolyline()
            start_point = QgsPoint(geom[0])
            end_point = QgsPoint(geom[-1])
            print (start_point)
            print (start_point.x())

<qgis._core.QgsVectorLayer object at 0x000001767C312EE8>
found it ********

<QgsGeometry: LineStringZ (26138560.91000000014901161 643574.7099999999627471 778.20000000000004547, 26138558.94000000134110451 643563.81000000005587935 0)>
<QgsPoint: Point (26138560.91000000014901161 643574.7099999999627471)>