dict.has_key(a) --> a in dict

has_key() is gone in python3, so use a more modern syntax here.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

offlineimap/folder/IMAP.py

@@ -186,7 +186,7 @@ class IMAPFolder(BaseFolder):
                 continue
             messagestr = messagestr.split(' ', 1)[1]
             options = imaputil.flags2hash(messagestr)
-            if not options.has_key('UID'):
+            if not 'UID' in options:
                 self.ui.warn('No UID in message with options %s' %\
                                           str(options),
                                           minor = 1)

offlineimap/folder/UIDMaps.py

@@ -94,7 +94,7 @@ class MappedIMAPFolder(IMAPFolder):
             # summary that have been deleted from the folder.
 
             for luid in self.diskl2r.keys():
-                if not reallist.has_key(luid):
+                if not luid in reallist:
                     ruid = self.diskl2r[luid]
                     del self.diskr2l[ruid]
                     del self.diskl2r[luid]
@@ -107,7 +107,7 @@ class MappedIMAPFolder(IMAPFolder):
             self.l2r = self.diskl2r.copy()
 
             for luid in reallist.keys():
-                if not self.l2r.has_key(luid):
+                if not luid in self.l2r:
                     ruid = nextneg
                     nextneg -= 1
                     self.l2r[luid] = ruid