def mergePathInfo(layer, coord, extension):
 z = coord.zoom
 x = coord.column
 y = coord.row
 return ('/%(layer)s/%(z)d/%(x)d/%(y)d.%(extension)s' % locals())

def mergePathInfo ( layer , coord , extension ) : z = coord . zoom x = coord . column y = coord . row return ( '/%(layer)s/%(z)d/%(x)d/%(y)d.%(extension)s' % locals ( ) )
converts layer name .