Issue #10335: Add tokenize.open(), detect the file encoding using

tokenize.detect_encoding() and open it in read only mode.

1 files changed, 1 insertions, 4 deletions

diff --git a/Lib/tabnanny.py b/Lib/tabnanny.py
index 7053fd9398..a4d4ef0da0 100755
--- a/Lib/tabnanny.py
+++ b/Lib/tabnanny.py
@@ -93,11 +93,8 @@ def check(file):
                 check(fullname)
         return
 
-    with open(file, 'rb') as f:
-        encoding, lines = tokenize.detect_encoding(f.readline)
-
     try:
-        f = open(file, encoding=encoding)
+        f = tokenize.open(file)
     except IOError as msg:
         errprint("%r: I/O Error: %s" % (file, msg))
         return