title: extract data from an .osm.pbf file within python
body: <p>I've downloaded the great britain .osm.pbf file from <a href="http://download.geofabrik.de/europe.html" rel="nofollow noreferrer">http://download.geofabrik.de/europe.html</a> and I want to be able to pull out all the lat and lons of every node. is this possible?</p>
  <p>If i could get it into python format of some sort that would be great</p>