QGIS - PYQGIS Import gpx as vector layer

Question

I'm trying to use the python console to import some gpx files as vector layers. When I do it manually I have to choose which layers to add, my options are:

I've tried various versions of the code from the manual:

uri = "path/to/gpx/file.gpx?type=track"
vlayer = QgsVectorLayer(uri, "layer name you like", "gpx")

I also tried adding the layer name I want like:

path/to/gpx/file.gpx|layername=track_points?type=track", "layer name you like", "gpx")

Edit: On each try I don't get any errors, it just doesn't import anything, ie no new layers in the layers panel. I would like to import the files using python as I have quite a large number of them. I could do it manually but I would have to choose the track_points layer for each file

Edit: From Joseph's answer I adapted his code and got what I wanted, not entirely sure how but if it helps anyone else:

import os
path = 'Path/To/GPX Files/'
names = ["track_points"]
for dirpath, subdirs, files in os.walk(path):
    for f in files:
    layername = f[:-4]
        for name in names: 
            iface.addVectorLayer(os.path.join(dirpath, f)+"?type="+name, layername, "gpx")

Answer 1

This is only half an answer as the following code can be used to import waypoints, routes and tracks but not route_points or track_points (these seem to be replaced by the tracks layer).

import os

path = "path/to/gpx/folder"
names = ["waypoint", "route", "track", "route_point", "track_point"]

for dirpath, subdirs, files in os.walk(path):
    for f in files:
        for name in names:
            iface.addVectorLayer(os.path.join(dirpath, f)+"?type="+name, name, "gpx")

Not sure how to import the last two layers using PyQGIS. The code was adapted from this useful post:

• iface.addVectorLayer on a gml file causes “Select vector layers to add” dialog (pyqgis).

Answer 2

It is possible to retreive all layers of a GPX with PyQGIS by doing:

import os

path = "path/to/gpx/folder"
names = ["waypoints", "routes", "tracks", "route_points", "track_points"]

for dirpath, subdirs, files in os.walk(path):
    for f in files:
        for name in names:
            iface.addVectorLayer(os.path.join(dirpath, f)+"|layername="+name, name, "ogr")

Answer 3

For me the correct solution is Jean-François Bourdon solution, because you can select witch layer you want (It's what where are seeing in the picture of this Question).

I was trying to convert a GPX Track file in points, not in a line.

If I use "?type=" [Wapoint, track or route] Qgis import track like a line.

But if I use "|layername=" I can select 'track_points', and then I have a GPX file conversion in points.

When I read the first time Jean-François Bourdon solution, I don't see this important difference.