code: def _generate_badges(self):
          
          daycount = self._stats.downloads_per_day
          day = self._generate_badge('Downloads', '%d/day' % daycount)
          self._badges['per-day'] = day
          weekcount = self._stats.downloads_per_week
          if weekcount is None:
              # we don't have enough data for week (or month)
              return
          week = self._generate_badge('Downloads', '%d/week' % weekcount)
          self._badges['per-week'] = week
          monthcount = self._stats.downloads_per_month
          if monthcount is None:
              # we don't have enough data for month
              return
          month = self._generate_badge('Downloads', '%d/month' % monthcount)
          self._badges['per-month'] = month
docs: Generate download badges. Append them to ``self._badges``.