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-rw-r--r--Lib/lib2to3/refactor.py2
-rw-r--r--Lib/lib2to3/tests/test_refactor.py1
2 files changed, 2 insertions, 1 deletions
diff --git a/Lib/lib2to3/refactor.py b/Lib/lib2to3/refactor.py
index 7c4e064..7841b99 100644
--- a/Lib/lib2to3/refactor.py
+++ b/Lib/lib2to3/refactor.py
@@ -514,7 +514,7 @@ class RefactoringTool(object):
set.
"""
try:
- fp = io.open(filename, "w", encoding=encoding)
+ fp = io.open(filename, "w", encoding=encoding, newline='')
except OSError as err:
self.log_error("Can't create %s: %s", filename, err)
return
diff --git a/Lib/lib2to3/tests/test_refactor.py b/Lib/lib2to3/tests/test_refactor.py
index f3059a9..9e3b8fb 100644
--- a/Lib/lib2to3/tests/test_refactor.py
+++ b/Lib/lib2to3/tests/test_refactor.py
@@ -300,6 +300,7 @@ from __future__ import print_function"""
old, new = self.refactor_file(fn)
self.assertIn(b"\r\n", old)
self.assertIn(b"\r\n", new)
+ self.assertNotIn(b"\r\r\n", new)
def test_refactor_docstring(self):
rt = self.rt()