import re
TUPAT=re.compile(b'^WARC-Target-URI: (.*?)\r',re.MULTILINE)
LMPAT=re.compile(b'^Last-Modified: (.*?)\r',re.MULTILINE)

def showmeLMH(wtype,buf,part):
  global URI
  if part==1:
    if (m:=TUPAT.search(buf)):
      URI=m[1]
    else:
      raise ValueError(b"No target URI in %s ??"%buf)
  else:
    m=LMPAT.search(buf)
    OUT.write(URI)
    if m:
      OUT.write(b'\t')
      OUT.write(m[1])
    OUT.write(b'\n')

warc(showmeLMH,[b'response'],parts=3)