简单：
l = ['exiv2-devel', 'mingw-libs', 'tcltk-demos', 'fcgi', 'netcdf', 'pdcurses-devel', 'msvcrt', 'gdal-grass', 'iconv', 'qgis-devel', 'qgis1.1', 'php_mapscript']if len(l) % 2 != 0: l.append(" ")split = len(l)/2l1 = l[0:split]l2 = l[split:]for key, value in zip(l1,l2): print '%-20s %s' % (key, value) #python <2.6 print "{0:<20s} {1}".format(key, value) #python 2.6+
