We'll start by parsing an Extensible Markup Language (XML) file to get the raw latitude and longitude pairs. This will show you how we can encapsulate some not-quite-functional features of Python to create an iterable sequence of values.
We'll make use of the xml.etree module. After parsing, the resulting ElementTree object has a findall() method that will iterate through the available values.
We'll be looking for constructs, such as the following XML example:
<Placemark><Point> <coordinates>-76.33029518659048, 37.54901619777347,0</coordinates> </Point></Placemark>
The file will have a number of <Placemark> tags, each of which has a point and coordinate structure within it. This is typical of Keyhole Markup Language
