Use simplejson first, and centralize import

simplejson is supposed to be faster:
http://stackoverflow.com/questions/712791/json-and-simplejson-module-differences-in-python

modules/aum/browser.py

@@ -24,12 +24,9 @@ import datetime
 import random
 import urllib
 from htmlentitydefs import codepoint2name
-try:
-    import json
-except ImportError:
-    import simplejson as json
 
 from weboob.tools.browser import BaseBrowser, BrowserIncorrectPassword, BrowserUnavailable
+from weboob.tools.json import json
 
 from weboob.capabilities.chat import ChatException, ChatMessage
 from weboob.capabilities.messages import CantSendMessage

modules/izneo/backend.py

@@ -19,14 +19,10 @@
 
 from __future__ import with_statement
 
-try:
-    import simplejson as json
-except ImportError:
-    import json
-
 import re
 
 from weboob.capabilities.gallery import ICapGallery, BaseGallery, BaseImage
+from weboob.tools.json import json
 from weboob.tools.backend import BaseBackend
 from weboob.tools.browser import BaseBrowser, BasePage
 

modules/mediawiki/browser.py

@@ -22,14 +22,9 @@ import urllib
 import datetime
 
 from weboob.tools.browser import BaseBrowser, BrowserIncorrectPassword
+from weboob.tools.json import json as simplejson
 from weboob.capabilities.content import Revision
 
-try:
-    import simplejson
-except ImportError:
-    # Python 2.6+ has a module similar to simplejson
-    import json as simplejson
-
 __all__ = ['MediawikiBrowser']
 
 

modules/radiofrance/browser.py

@@ -18,6 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 from weboob.tools.browser import BaseBrowser, BasePage
+from weboob.tools.json import json
 from weboob.capabilities.video import BaseVideo
 from weboob.tools.browser.decorators import id2url
 
@@ -25,11 +26,6 @@ from StringIO import StringIO
 from time import time
 import re
 
-try:
-    import json
-except ImportError:
-    import simplejson as json
-
 try:
     from urlparse import parse_qs
 except ImportError:

modules/youtube/pages.py

@@ -18,14 +18,10 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-try:
-    import json
-except ImportError:
-    import simplejson as json
-
 import urllib
 
 from weboob.tools.browser import BasePage, BrokenPageError, BrowserIncorrectPassword
+from weboob.tools.json import json
 
 
 __all__ = ['LoginPage', 'LoginRedirectPage', 'ForbiddenVideo', 'ForbiddenVideoPage', \

weboob/tools/json.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+
+# Copyright(C) 2012 Laurent Bachelier
+#
+# This file is part of weboob.
+#
+# weboob is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# weboob is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with weboob. If not, see <http://www.gnu.org/licenses/>.
+
+# because we don't want to import this file by "import json"
+from __future__ import absolute_import
+
+__all__ = ['json']
+
+try:
+    # try simplejson first because it is faster
+    import simplejson as json
+except ImportError:
+    # Python 2.6+ has a module similar to simplejson
+    import json

weboob/tools/parsers/jsonparser.py

@@ -18,11 +18,7 @@
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
 
-try:
-    import json
-except ImportError:
-    import simplejson as json
-
+from weboob.tools.json import json
 from .iparser import IParser