Skip to main content

Iterate over .osm file and call a provided callback function for each element

Project description

This code loads .osm file and allows to call function on all OSM objects in dataset.

It is distributed as an osm_iterator PyPI package.

Usage example:

from osm_iterator.osm_iterator import Data

def show_places(element):
    place_tag = element.get_tag_value("place")
    name_tag = element.get_tag_value("name")
    osm_object_url = element.get_link()
    if place_tag != None:
        print(name_tag + " is an object " + osm_object_url)

osm = Data("file.osm")
osm.iterate_over_data(show_places)

Design explanation: this code has deeply suboptimal handling of pretty much everything. For start, all data is loaded into memory and then duplicated in-memory dataset is created.

As result, attempt to process any large datasets will cause issues due to excessive memory consumption.

This situation is consequence of following facts

  • This code was written during my first attempt to process OSM data using Python
  • API allows (at least in theory) to painlessly switch to real iterator that is not loading all data into memory at once
  • So far this was good enough for my purposes so I had no motivation to spend time on improving something that is not a bottleneck

Though, if someone has good ideas (especially in form of a working code) - comments and pull requests are welcomed.

Running tests

nosetests3 or python3 -m unittest

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
osm_iterator-1.0.0-py3-none-any.whl (3.5 kB) Copy SHA256 hash SHA256 Wheel py3
osm_iterator-1.0.0.tar.gz (3.1 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page