TypeError: gobject `OsmGpsMap' doesn't support property `user_agent'

[Mark Snidal]

Hello all,

I was looking for a simple GTK+ GPS map widget with Python bindings and this project looked like a great fit. I installed osm-gps-map from the Arch community repos (https://www.archlinux.org/packages/community/x86_64/osm-gps-map/) and tried to run the example code in the GitHub (mapviewer.py) using Python2.7, PyGTK version (2, 24, 0) and GTK version (2, 24, 30), and it produced these warnings/errors:

mapviewer.py:24: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk
mapviewer.py:32: PyGIWarning: OsmGpsMap was imported without specifying a version first. Use gi.require_version('OsmGpsMap', '1.0') before import to ensure that the right version gets loaded.
  from gi.repository import OsmGpsMap as osmgpsmap
using library: <gi.repository.OsmGpsMap> (version 1.0)
Traceback (most recent call last):
  File "mapviewer.py", line 278, in <module>
    u = UI()
  File "mapviewer.py", line 73, in __init__
    self.osm = osmgpsmap.Map(user_agent="mapviewer.py/%s" % osmgpsmap._version)

Has anybody encountered this issue before? It seems like the Python bindings might not have installed properly on my machine, but when I tried to build from source, it seemed the instructions on your website were out of date regarding the Python bindings (ie. there is no /python folder in the source anymore.)

Cheers,
Mark

[Patrick Salecker]

Hi,
the example in GitHub repository contains changes that aren't compatible with osm-gps-map 1.1.0 that comes with archlinux.

Please try an older revision of the mapviewer.py:
https://github.com/nzjrs/osm-gps-map/blob/c1983d823b6b01aefb9d4af728e3cac4d32466ef/examples/mapviewer.py

Best regards,
Patrick

[peter....@gmail.com]

I had the very same problem on Ubuntu 18.04.3 LTS (Bionic).

The forward-incompatible change in mapviewer.py is just a single line: (mapviewer.py:73)

-            self.osm = osmgpsmap.Map(user_agent="mapviewer.py/%s" % osmgpsmap._version)                                                                                  
+            self.osm = osmgpsmap.Map()

As a side note, the install instructions on the website are outdated for current Ubuntu. I had to install "libosmgpsmap-1.0-1" and "gir1.2-osmgpsmap-1.0" for the example to work:

$ sudo apt-get install libosmgpsmap-1.0-1 gir1.2-osmgpsmap-1.0

Can we update the instructions on the website accordingly? Unfortunately, I couldn't find the related code in the gh-pages branch of the repository. Any hints?

Peter

[peter....@gmail.com]

I found the website source code and opened a pull request:

- https://github.com/nzjrs/osm-gps-map/pull/65

Cheers!