from mapnik import Map, Layer
proj4 = '+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=5500000 +y_0=0 +ellps=bessel +towgs84=551.7000,162.9000,467.9000,6.040000,1.960000,-11.380000,-4.82000000 +units=m +no_defs'
m = Map(256,256,proj4)
lyr = Layer('Name',proj4)