a lot of pyflakes and pylint fixes

weboob/tools/application/base.py

@@ -223,8 +223,8 @@ class BaseApplication(object):
         else:
             res = getattr(backend, function)(*args, **kwargs)
 
-        if self.selected_fields:
-            fields = self.selected_fields
+        if selected_fields:
+            fields = selected_fields
         else:
             fields = None
 

weboob/tools/application/formatters/webkit/__init__.py

@@ -17,3 +17,5 @@
 
 
 from .webkitgtk import WebkitGtkFormatter
+
+__all__ = ['WebkitGtkFormatter']

weboob/tools/application/qt/__init__.py

@@ -1,2 +1,5 @@
 from .qt import QtApplication, QtMainWindow, QtDo, HTMLDelegate
 from .backendcfg import BackendCfg
+
+__all__ = ['QtApplication', 'QtMainWindow', 'QtDo', 'HTMLDelegate',
+           'BackendCfg']