#!/usr/bin/python
import os, string, sys, time

try:
    molfold = os.listdir(sys.argv[1])
    molfold.sort()
    time_tup = time.gmtime()
    new_molfile = open(sys.argv[1]+'_'+time_tup[1]+time_tup[0]+'.sdf', 'w')
except IndexError:
    print '\Usage: a1_cat_sdf_from_fold.py Folder(unpacked from KEGG-website)\n'
    raise SystemExit()

for file in molfold:
    new_molfile.write(file[:-4])
    molfile = open(sys.argv[1]+'/'+file, 'r')
    for line in molfile.readlines():
            new_molfile.write(line)
molfile.close()
new_molfile.close()