code: def find_entry(self, entry, exact=True):
          
          if exact:
              self.log([u"Finding entry '%s' with exact=True", entry])
              if entry in self.entries:
                  self.log([u"Found entry '%s'", entry])
                  return entry
          else:
              self.log([u"Finding entry '%s' with exact=False", entry])
              for ent in self.entries:
                  if os.path.basename(ent) == entry:
                      self.log([u"Found entry '%s'", ent])
                      return ent
          self.log([u"Entry '%s' not found", entry])
          return None
docs: Return the full path to the first entry whose file name equals
          the given ``entry`` path.
  
          Return ``None`` if the entry cannot be found.
  
          If ``exact`` is ``True``, the path must be exact,
          otherwise the comparison is done only on the file name.
  
          Example: ::
  
              entry = "config.txt"
  
          matches: ::
  
              config.txt            (if exact == True or exact == False)
              foo/config.txt        (if exact == False)
              foo/bar/config.txt    (if exact == False)
  
          :param string entry: the entry name to be searched for
          :param bool exact: look for the exact entry path
          :rtype: string
          :raises: same as :func:`~aeneas.container.Container.entries`