From 6d6708f6ac05f1c64447e2d2f2939d87b2f6bf6c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20van=20der=20Essen?= <fva@openerp.com>
Date: Tue, 14 Jan 2014 11:31:17 +0100
Subject: [PATCH] [IMP] hw_escpos: do not crash on module loading if there are
 missing python dependencies

bzr revid: fva@openerp.com-20140114103117-1930rki63u7alm26
---
 addons/hw_escpos/controllers/main.py | 7 ++++++-
 addons/hw_escpos/escpos/escpos.py    | 9 +++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/addons/hw_escpos/controllers/main.py b/addons/hw_escpos/controllers/main.py
index d284d05dfdd..88e852ff667 100644
--- a/addons/hw_escpos/controllers/main.py
+++ b/addons/hw_escpos/controllers/main.py
@@ -10,7 +10,12 @@ import random
 import math
 import openerp.addons.hw_proxy.controllers.main as hw_proxy
 import subprocess
-import usb.core
+
+try:
+    import usb.core
+except: ImportError:
+    usb = None
+
 from openerp.tools.translate import _
 from .. import escpos
 from ..escpos import printer
diff --git a/addons/hw_escpos/escpos/escpos.py b/addons/hw_escpos/escpos/escpos.py
index 9296568b4fc..ae692f34fd2 100644
--- a/addons/hw_escpos/escpos/escpos.py
+++ b/addons/hw_escpos/escpos/escpos.py
@@ -7,13 +7,18 @@
 '''
 
 import Image
-import qrcode
+
+try: 
+    import qrcode
+except ImportError:
+    qrcode = None
+
 import time
 import copy
 
 try:
     import jcconv
-except:
+except ImportError:
     jcconv = None
     print 'ESC/POS: please install jcconv for improved Japanese receipt printing:'
     print ' # pip install jcconv'