add check to prevent prints in weboob modules

modules/okc/optim/profiles_walker.py

@@ -17,8 +17,6 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
-from __future__ import print_function
-
 from random import randint
 
 from weboob.tools.browser import BrowserUnavailable
@@ -101,7 +99,7 @@ class ProfilesWalker(Optimization):
                 self.profiles_queue.add(id)
                 return
             except Exception as e:
-                print(e)
+                self.logger.exception(e)
         finally:
             if self.view_cron is not None:
                 self.view_cron = self.sched.schedule(randint(5, 10), self.view_profile)