Issue #17047: remove doubled words found in 2.7 to 3.4 Lib/*,
as reported by Serhiy Storchaka and Matthew Barnett.
diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 2d376d8..dc2b433 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -298,7 +298,7 @@
def seek(self, pos, whence=0):
"""Change stream position.
- Change the stream position to byte offset offset. offset is
+ Change the stream position to byte offset pos. Argument pos is
interpreted relative to the position indicated by whence. Values
for whence are ints: