#!/usr/bin/env python
import re

src = 'asdhfoias_???????_????-?'
zero = 'ashaadfio_sdhfo_ahaasdiof'
qrx = re.compile( '\?+' )

for m in re.finditer( 'a+', zero ):
  print m.group()
  print m.span()
  print

for m in qrx.finditer( src ):
  print m.group()
  print m.span()
  print m.start(), m.end()
  print

for m in qrx.finditer( zero ):
  print m.group()
  print m.span()
  print