The first version of a map plotting module is available at http://www.cdc.noaa.gov/people/jeffrey.s.whitaker/python/basemap/
It's not nearly as fully featured as the the matlab mapping toolbox, nor does it have the same API - but it does provide some useful functions for plotting images and contour plots on mercator, lat/lon, lambert conformal and stereographic projections. Plotting coastlines, countries boundaries and state boundaries in the Americas is supported. Filling continents is supported, but filling ocean areas is not (yet). There are also functions to plot selected parallels and meridians, as well as an interpolation function to regrid regularly spaced lat/lon data to a native map projection grid.
In addition to numarray and matplotlib, the module requires proj (from http://proj.maptools.org).
Hope someone finds it useful - comments and suggestions are welcome.
Jeffrey S. Whitaker Phone : (303)497-6313
NOAA/OAR/CDC R/CDC1 FAX : (303)497-6449
325 Broadway Web : http://www.cdc.noaa.gov/~jsw
Boulder, CO, USA 80305-3328 Office: Skaggs Research Cntr 1D-124