Upgrade to python 3.5

bars_items/tests.py

@@ -199,7 +199,7 @@ class SellItemTests(ItemTests, AutoTestBarMixin):
         update_data = self.update_data.copy()
         update_data['unit_factor'] = 20
         old_sell_to_buy = self.stockitem.sell_to_buy
-        response = self.client.put("/sellitem/%d/?bar=%s" % (self.sellitem.id, self.bar), update_data)
+        response = self.client.put("/sellitem/{:d}/?bar={:s}".format(self.sellitem.id, self.bar.id), update_data)
         self.assertEqual(response.status_code, 200)
         self.assertAlmostEqual(reload(self.stockitem).sell_to_buy, old_sell_to_buy / update_data['unit_factor'])
 

environment.yml

@@ -2,14 +2,14 @@ name: chocapix
 channels:
   - conda-forge
 dependencies:
-  - python=2.7
+  - python=3.5
   - markdown=2.6.2
   - mock=1.3.0
   - psycopg2=2.6
   - requests=2.8.1
   - sqlparse=0.1.16
   - werkzeug=0.10.4
-  - openssl=1.1.1d
+  - openssl
   - pip:
     - app_version==1.0.1
     - django-cors-headers==1.1.0