2to3: Remove xreadlines and replace f.readlines() by f where valid.

An open file `f` has been an iterator since python2.3 and
`f.xreadlines()` is no longer needed, so replace it with `f`. Also
replace `f.readlines()` with `f` where an iterator will do. The
replacement of `f.readlines()` is not critical because it is a list in
both python2 and python3, but the code is a bit cleaner.

Closes #3093

1 files changed, 2 insertions, 1 deletions

diff --git a/tools/py3tool.py b/tools/py3tool.py
index be7a6cce8..5e2ffbe58 100755
--- a/tools/py3tool.py
+++ b/tools/py3tool.py
@@ -78,7 +78,8 @@ FIXES_TO_SKIP = [
     'callable',
     'apply',
     'input',
-    'raw_input'
+    'raw_input',
+    'xreadlines'
 ]
 
 skip_fixes= []