Parse GPX file generated by Strava containing heartrate, cadence and temperature

parse_strava_gpx_minidom.py

from xml.dom import minidom
import datetime

tracks = {}
def parseTrack(trk):
	name = trk.getElementsByTagName('name')[0].firstChild.data
	if not name in tracks:
	   tracks[name] = []
	for trkseg in trk.getElementsByTagName('trkseg'):
		for trkpt in trkseg.getElementsByTagName('trkpt'):
			lat = float(trkpt.getAttribute('lat'))
			lon = float(trkpt.getAttribute('lon'))
			ele = float(trkpt.getElementsByTagName('ele')[0].firstChild.data)
			rfc3339 = trkpt.getElementsByTagName('time')[0].firstChild.data
			try:
				t = datetime.datetime.strptime(rfc3339, '%Y-%m-%dT%H:%M:%S.%fZ')
			except ValueError:
				t = datetime.datetime.strptime(rfc3339, '%Y-%m-%dT%H:%M:%SZ')
			extensions = trkpt.getElementsByTagName('extensions')[0]
			trkPtExtension = extensions.getElementsByTagName('gpxtpx:TrackPointExtension')[0]
			if trkPtExtension:
				hr = int(trkPtExtension.getElementsByTagName('gpxtpx:hr')[0].firstChild.data)
				cad = int(trkPtExtension.getElementsByTagName('gpxtpx:cad')[0].firstChild.data)
				if trkPtExtension.getElementsByTagName('gpxtpx:atemp'):
					atemp = int(trkPtExtension.getElementsByTagName('gpxtpx:atemp')[0].firstChild.data)

			tracks[name].append({'lat':lat, 'lon':lon, 'ele':ele, 'time':t, 'hr':hr, 'cad':cad, 'atemp':atemp})

doc = minidom.parse('ride.gpx')
doc.normalize()

gpx = doc.documentElement

for node in gpx.getElementsByTagName('trk'):
	parseTrack(node)

print tracks