osm_nodes_from_xml2geojson.py

import csv
from xml.dom import minidom
from osgeo import ogr
import os, sys

abs_file_path = "<path_to_planet_osm_file>/planet.osm";
xmldoc = minidom.parse(abs_file_path)

json_list = list()

node = xmldoc.getElementsByTagName("node")
for n in node:
    # Other attributes can be added using approach here https://gist.github.com/Zia-/f90cea5870a03dd5d8ac822d9c2a9c28
    string = "{\"node\":{\"coordinates\":[%s,%s],\"type\":\"Point\"}}" % (n.getAttribute("lon").encode('ascii','ignore'),n.getAttribute("lat").encode('ascii','ignore'))
    dic = {}
    dic['json_key'] = string
    json_list.append(dic)

# If you want to put all json objects separated by commans
'''abs_file_path = "<path_to_planet_osm_file>/planet.json";
i = 1;
with open(abs_file_path, 'wb') as f:
    for feature in json_list:
        data_input = feature['json_key']
        f.write(data_input)
        if (i < len(json_list)):
            i += 1;
            f.write(", ")'''

# All json objects not separated by commas, used in mongodb import
abs_file_path = "<path_to_planet_osm_file>/planet.json";
with open(abs_file_path, 'wb') as f:
    for feature in json_list:
        data_input = feature['json_key']
        f.write(data_input)