code: def get_anonymization_salt(ts):
      
      salt_key = 'stats:salt:{}'.format(ts.date().isoformat())
      salt = current_cache.get(salt_key)
      if not salt:
          salt_bytes = os.urandom(32)
          salt = b64encode(salt_bytes).decode('utf-8')
          current_cache.set(salt_key, salt, timeout=60 * 60 * 24)
      return salt
docs: Get the anonymization salt based on the event timestamp's day.