Fix PEP8.

pos_barcode_tare/__openerp__.py

@@ -5,7 +5,8 @@
     'name': "Point of Sale - Tare barecode labels for loose goods",
     'version': '9.0.0.0.1',
     'category': 'Point of Sale',
-    'summary': 'Point of Sale - Print and scan tare barecodes labels to sell loose goods.',
+    'summary': """Point of Sale - Print and scan tare \
+                  barecodes labels to sell loose goods.""",
     'author': "Le Nid, Odoo Community Association (OCA)",
     'website': "https://github.com/OCA/pos",
     'license': 'AGPL-3',

pos_barcode_tare/models/pos_config.py

@@ -5,4 +5,7 @@ from openerp import models, fields
 
 class PosConfig(models.Model):
     _inherit = 'pos.config'
-    tare_label_button = fields.Boolean('Show tare label button', help="Print tare labels with this POS")
+    tare_label_button = fields.Boolean(
+        'Show tare label button',
+        help="Print tare labels with this POS"
+    )