postgis - Accessing non-spatial PostgreSQL tables using OGR Python bindings?

When connecting to PostgreSQL/PostGIS using the OGR Python bindings is it possible to get non-spatial table names (i.e. OGR layers) from the connection?

Currently, doing:

conn = ogr.Open("PG: #params")
for layer in conn:
  print layer.GetName()

Will only print the names of spatial tables, however I can access non-spatial tables by (for example) directly specifying the table name, e.g.:

layer = conn.GetLayerByName('non_spatial_table_name')

The OGR docs refer to the "PG_LIST_ALL_TABLES=YES" parameter, but I can't find how this links to API (let alone the Python SWIG bindings!).

Answer

For reference, it is possible to set GDAL configuration options using gdal.SetConfigOption().

To list all tables:

import osgeo.gdal as gdal
import osgeo.ogr as ogr

gdal.SetConfigOption("PG_LIST_ALL_TABLES", "YES")


conn = ogr.Open("PG: #params")
for layer in conn:
    print layer.GetName()
    # Will print all tables including non-spatial ones.

You can see further examples of gdal.SetConfigOption in the GDAL/OGR test suite PostGIS module: http://svn.osgeo.org/gdal/trunk/autotest/ogr/ogr_pg.py