@property<EOL><INDENT>def downloads_per_week(self):<DEDENT>
if len(self.cache_dates) < <NUM_LIT:7>:<EOL><INDENT>logger.error("<STR_LIT>"<EOL>"<STR_LIT>", len(self.cache_dates))<EOL>return None<EOL><DEDENT>count, _ = self._downloads_for_num_days(<NUM_LIT:7>)<EOL>logger.debug("<STR_LIT>", count)<EOL>return count<EOL>
Return the number of downloads in the last 7 days.

:return: number of downloads in the last 7 days; if we have less than
  7 days of data, returns None.
:rtype: int