Open files in binary mode to avoid newlines transformation.
diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py
index 4137d5a..74d512d 100644
--- a/Lib/test/test_doctest.py
+++ b/Lib/test/test_doctest.py
@@ -2624,8 +2624,8 @@
>>> import tempfile, os
>>> fn = tempfile.mktemp()
- >>> with open(fn, 'w') as f:
- ... f.write('Test:\r\n\r\n >>> x = 1 + 1\r\n\r\nDone.\r\n')
+ >>> with open(fn, 'wb') as f:
+ ... f.write(b'Test:\r\n\r\n >>> x = 1 + 1\r\n\r\nDone.\r\n')
35
>>> doctest.testfile(fn, False)
TestResults(failed=0, attempted=1)
@@ -2634,8 +2634,8 @@
And now *nix line endings:
>>> fn = tempfile.mktemp()
- >>> with open(fn, 'w') as f:
- ... f.write('Test:\n\n >>> x = 1 + 1\n\nDone.\n')
+ >>> with open(fn, 'wb') as f:
+ ... f.write(b'Test:\n\n >>> x = 1 + 1\n\nDone.\n')
30
>>> doctest.testfile(fn, False)
TestResults(failed=0, attempted=1)