[dak/master 04/10] Compare None with object identity, not equality

[Chris Lamb <lamby@debian.org>]

Signed-off-by: Chris Lamb <lamby@debian.org>
---
 daklib/srcformats.py |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/daklib/srcformats.py b/daklib/srcformats.py
index 60da5bc..735b7b6 100644
--- a/daklib/srcformats.py
+++ b/daklib/srcformats.py
@@ -30,15 +30,18 @@ class SourceFormat(type):
     @classmethod
     def parse_format(cls, txt, is_a_dsc=False, field='files'):
         format = re_verwithext.search(txt)
-        if not format:
+
+        if format is None:
             raise UnknownFormatError, txt
 
         format = format.groups()
-        if format[1] == None:
+
+        if format[1] is None:
             format = int(float(format[0])), 0, format[2]
         else:
             format = int(format[0]), int(format[1]), format[2]
-        if format[2] == None:
+
+        if format[2] is None:
             format = format[:2]
 
         if is_a_dsc:
-- 
1.6.3.3