Merge branch 'feature/new-mail-api' into feature/async-api

It is still a work in progress, many tests fails and there is plenty of
TODOs to fix. But is starting to be a working version.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/leap/mail/utils.py b/src/leap/mail/utils.py
index 457097b..8e51024 100644
--- a/src/leap/mail/utils.py
+++ b/src/leap/mail/utils.py
@@ -45,9 +45,12 @@ def first(things):
 def empty(thing):
     """
     Return True if a thing is None or its length is zero.
+    If thing is a number (int, float, long), return False.
     """
     if thing is None:
         return True
+    if isinstance(thing, (int, float, long)):
+        return False
     if isinstance(thing, SoledadDocument):
         thing = thing.content
     try: