[FIX] Pylint on hw_customer_display and hw_telium_payment_terminal and flake8 on pos_remove_pos_category

hw_customer_display/test-scripts/customer-display-test.py

@@ -6,9 +6,16 @@
 # with the customer display independantly from the Odoo server
 # It has been tested with a Bixolon BCD-1100
 
-from serial import Serial
-from unidecode import unidecode
 import sys
+import logging
+
+_logger = logging.getLogger(__name__)
+
+try:
+    from serial import Serial
+    from unidecode import unidecode
+except (ImportError, IOError) as err:
+    _logger.debug(err)
 
 DEVICE = '/dev/ttyUSB0'
 DEVICE_RATE = 9600

hw_telium_payment_terminal/controllers/main.py

@@ -27,15 +27,18 @@ import time
 import curses.ascii
 from threading import Thread, Lock
 from Queue import Queue
-from serial import Serial
-import pycountry
 import openerp.addons.hw_proxy.controllers.main as hw_proxy
 from openerp import http
 from openerp.tools.config import config
 
-
 logger = logging.getLogger(__name__)
 
+try:
+    import pycountry
+    from serial import Serial
+except (ImportError, IOError) as err:
+    logger.debug(err)
+
 
 class TeliumPaymentTerminalDriver(Thread):
     def __init__(self):

pos_remove_pos_category/module.py

@@ -19,7 +19,7 @@
 #
 ##############################################################################
 
-from openerp import models
+from openerp import models, api
 
 
 class Module(models.Model):
@@ -34,16 +34,16 @@ class Module(models.Model):
                 # As we have loose previous POS categs restore them
                 # in a sane empty state
 
-                cr.execute('UPDATE product_template SET pos_categ_id=NULL')
+                self.env.cr.execute('UPDATE product_template SET pos_categ_id=NULL')
 
                 # And restore original constraint
-                cr.execute('''
+                self.env.cr.execute('''
                     ALTER TABLE product_template
                     DROP CONSTRAINT IF EXISTS
                     product_template_pos_categ_id_fkey
                 ''')
 
-                cr.execute('''
+                self.env.cr.execute('''
                     ALTER TABLE product_template ADD CONSTRAINT
                     "product_template_pos_categ_id_fkey"
                     FOREIGN KEY (pos_categ_id)
@@ -52,7 +52,7 @@ class Module(models.Model):
 
                 # Restore POS category menu action
                 # in SQL because pool/env is not available here
-                cr.execute('''
+                self.env.cr.execute('''
                     UPDATE ir_act_window iaw SET res_model='pos.category'
                     FROM ir_model_data imd
                     WHERE