force gzip module to open files using 'b'inary mode.
closes patch #536278.
diff --git a/Lib/gzip.py b/Lib/gzip.py
index b2bbeda..9e198c7 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -35,6 +35,10 @@
def __init__(self, filename=None, mode=None,
compresslevel=9, fileobj=None):
+ # guarantee the file is opened in binary mode on platforms
+ # that care about that sort of thing
+ if mode and 'b' not in mode:
+ mode += 'b'
if fileobj is None:
fileobj = self.myfileobj = __builtin__.open(filename, mode or 'rb')
if filename is None: