(self, pattern)
return True
Scan the text for the given pattern and update pos/match
        and related fields. The return value is a boolen that
        indicates if the pattern matched. The matched value is
        stored on the instance as ``match``, the last value is
        stored as ``last``. ``start_pos`` is the position of the
        pointer before the pattern was matched, ``pos`` is the
        end position.
Scan the text for the given pattern and update pos/match
        and related fields. The return value is a boolen that
        indicates if the pattern matched. The matched value is
        stored on the instance as ``match``, the last value is
        stored as ``last``. ``start_pos`` is the position of the
        pointer before the pattern was matched, ``pos`` is the
        end position.
Scan the text for the given pattern and update pos / match and related fields . The return value is a boolen that indicates if the pattern matched . The matched value is stored on the instance as match the last value is stored as last . start_pos is the position of the pointer before the pattern was matched pos is the end position .
def scan(self, pattern):
        """
        Scan the text for the given pattern and update pos/match
        and related fields. The return value is a boolen that
        indicates if the pattern matched. The matched value is
        stored on the instance as ``match``, the last value is
        stored as ``last``. ``start_pos`` is the position of the
        pointer before the pattern was matched, ``pos`` is the
        end position.
        """
        if self.eos:
            raise EndOfText()
        if pattern not in self._re_cache:
            self._re_cache[pattern] = re.compile(pattern, self.flags)
        self.last = self.match
        m = self._re_cache[pattern].match(self.data, self.pos)
        if m is None:
            return False
        self.start_pos = m.start()
        self.pos = m.end()
        self.match = m.group()
        return True
def scan ( self , pattern ) : if self . eos : raise EndOfText ( ) if pattern not in self . _re_cache : self . _re_cache [ pattern ] = re . compile ( pattern , self . flags ) self . last = self . match m = self . _re_cache [ pattern ] . match ( self . data , self . pos ) if m is None : return False self . start_pos = m . start ( ) self . pos = m . end ( ) self . match = m . group ( ) return True