def retrieve():
global URL_FILE
lines = pytext.readlines(URL_FILE)
for line in lines:
iid = line[0:3]
dstamp = line[4:15]
url = line[16:]
yield iid, dstamp, url
def add():
global URL_FILE
url = raw_input("Enter URL:\n")
iid, dummy1, dummy2 = retrieve().next()
nid = "{0:03}".format(int(iid)+1)
dstamp = time.strftime("%d-%b-%Y")
line = "{0} {1} {2}".format(nid, dstamp, url)
print line
lines = [line] + pytext.readlines(URL_FILE)
pytext.writelines(URL_FILE, lines)
