I try to extract coordinates from gpx file and it returns empty list. I used xml.etree and have any idea why it is empty, because d.attrib return proper values.
import xml.etree.ElementTree as ET
f = ('St_Louis_Zoo_sample.gpx')
p = ET.parse(f)
root = p.getroot()
lats=[]
lons=[]
for d in root:
if d.tag == 'wpt':
y = d.attrib['lat']
x = d.attrib['lon']
lats.append(y)
lons.append(x)
Here it is a gpx file
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<gpx xmlns="http://www.topografix.com/GPX/1/1" creator="Geovative Solutions GeoTours" version="1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd">
<metadata>
<name>St Louis Zoo sample</name>
<desc>This self guided,GPS enabled tour of the world famous St. Louis Zoo, has 85 points of interest. Narratives in english,explaining each exhibit and provides guidance to zoo facilities.This audio tour guide can enhance your next visit.</desc>
<author>
<name>wizardone, using GeoTours</name>
<link href="http://www.geovative.com/view?t=GEIF">
<text>St Louis Zoo sample</text>
</link>
</author>
<link href="http://www.geovative.com/view?t=GEIF">
<text>St Louis Zoo sample</text>
</link>
<time>2008-02-26T19:49:13</time>
<keywords>Audio tour guide
St.Louis Mo.
Zoo
Forest Park
Animals</keywords>
</metadata>
<wpt lat="38.63473" lon="-90.29408">
<name>Asian Elephant</name>
<desc>elephant</desc>
<link href="Data/Location3152-1"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63368" lon="-90.28679">
<name>Bactrian Camel</name>
<desc>camel</desc>
<link href="Data/Location3152-2"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63408" lon="-90.29323">
<name>Black Rhinoceros</name>
<desc>black rhino</desc>
<link href="Data/Location3152-3"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63533" lon="-90.29019">
<name>Cafe Restroom</name>
<desc>cafe restroom</desc>
<link href="Data/Location3152-4"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63677" lon="-90.28976">
<name>Polar Bear</name>
<desc>polar bear</desc>
<link href="Data/Location3152-5"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63496" lon="-90.28948">
<name>California Sea Lion</name>
<desc>sea lion</desc>
<link href="Data/Location3152-6"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63421" lon="-90.29458">
<name>Cheetah</name>
<desc>cheetah</desc>
<link href="Data/Location3152-7"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63633" lon="-90.29083">
<name>Grizzley Bear</name>
<desc>grizzly bear</desc>
<link href="Data/Location3152-8"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63395" lon="-90.28715">
<name>Jaguar</name>
<desc>jaguar</desc>
<link href="Data/Location3152-9"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
<wpt lat="38.63347" lon="-90.28769">
<name>Lion</name>
<desc>African lions live in a number of different habitats: grassy plains, open woodlands, semi-desert areas, even high mountains.</desc>
<link href="Data/Location3152-10"/>
<sym>Waypoint</sym>
<extensions>
<gpxx:WaypointExtension xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensions/v3/GpxExtensionsv3.xsd">
<gpxx:Proximity>15.24</gpxx:Proximity>
<gpxx:DisplayMode>SymbolAndName</gpxx:DisplayMode>
</gpxx:WaypointExtension>
</extensions>
</wpt>
</gpx>