grab_nodes_osm_file.py

import csv
from xml.dom import minidom
from osgeo import ogr
import os
from lxml.etree import tostring

# OSM data of Dar Es Salam can be downloaded from http://overpass.osm.rambler.ru/cgi/xapi_meta?*[bbox=39.0640,-7.1170,39.5269,-6.5767]
path_org = "<path to osm file>/planet.osm"
path_final = "<path to osm file>/planet_nodes.osm"
xmldoc = minidom.parse(path_org)

# Collecting lat, long, and name values of bus stations from OSM data
node = xmldoc.getElementsByTagName("node")

str = '';
with open(path_final, 'w') as f:
    f.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>")
    f.write("<osm version=\"0.6\" generator=\"Overpass API\">")
    f.write("<meta osm_base=\"2016-04-21T07:05:03Z\"/>")
    for n in node:
        lat = n.getAttribute("lat");
        lon = n.getAttribute("lon");
        # Following str lines could be merged into one
        # Its only collecting nodes lat lon values
        str = str + "<node lat=\'"
        str = str + lat
        str = str + "\' lon=\'"
        str = str + lon
        str = str + "\' />"
    f.write(str);
    f.write("</osm>")