import cssmin, time, glob
outfilename = 'all_' + str((int(time.time()))) + ".css"
with open(outfilename, 'wb') as outfile:
for fname in glob.glob('*.css'):
with open(fname, 'r') as rawfile:
minified_file = cssmin.cssmin(rawfile.read())
outfile.write(minified_file)
outfile.write('/* ================================end of ' + fname + '===========================================*/n')
Tem uma dependência, então pip install cssmin