Define the regexp used for the search

def search_regexp(self):
        """
        Define the regexp used for the search
        """
        if ((self.season == "") and (self.episode == "")):
            # Find serie
            try:
                print("%s has %s seasons (the serie is %s)" % (self.tvdb.data['seriesname'], self.tvdb.get_season_number(), self.tvdb.data['status'].lower()))
                # print self.tvdb.data
            except:
                pass
            regexp = '^%s.*' % self.title.lower()
        elif (self.episode == ""):
            # Find season
            try:
                print("%s has %s episodes in season %s" % (self.tvdb.data['seriesname'], self.tvdb.get_episode_number(int(self.season)), self.season))
            except:
                pass
            regexp = '^%s.*(s[0]*%s|season[\s\_\-\.]*%s).*' % (self.title.lower(), self.season, self.season)
        else:
            # Find season and episode
            try:
                print("%s S%sE%s name is \"%s\"" % (self.tvdb.data['seriesname'], self.season, self.episode, self.tvdb.get_episode(int(self.season), int(self.episode))['episodename']))
            except:
                pass
            regexp = '^%s.*((s[0]*%s.*e[0]*%s)|[0]*%sx[0]*%s).*' % (self.title.lower(), self.season, self.episode, self.season, self.episode)
        return regexp