Set EOL style to native.
diff --git a/Lib/test/contextmanager.py b/Lib/test/contextmanager.py
index e8b0894..07fe61c 100644
--- a/Lib/test/contextmanager.py
+++ b/Lib/test/contextmanager.py
@@ -1,33 +1,33 @@
-class GeneratorContextManager(object):

-    def __init__(self, gen):

-        self.gen = gen

-

-    def __context__(self):

-        return self

-

-    def __enter__(self):

-        try:

-            return self.gen.next()

-        except StopIteration:

-            raise RuntimeError("generator didn't yield")

-

-    def __exit__(self, type, value, traceback):

-        if type is None:

-            try:

-                self.gen.next()

-            except StopIteration:

-                return

-            else:

-                raise RuntimeError("generator didn't stop")

-        else:

-            try:

-                self.gen.throw(type, value, traceback)

-            except (type, StopIteration):

-                return

-            else:

-                raise RuntimeError("generator caught exception")

-

-def contextmanager(func):

-    def helper(*args, **kwds):

-        return GeneratorContextManager(func(*args, **kwds))

-    return helper

+class GeneratorContextManager(object):
+    def __init__(self, gen):
+        self.gen = gen
+
+    def __context__(self):
+        return self
+
+    def __enter__(self):
+        try:
+            return self.gen.next()
+        except StopIteration:
+            raise RuntimeError("generator didn't yield")
+
+    def __exit__(self, type, value, traceback):
+        if type is None:
+            try:
+                self.gen.next()
+            except StopIteration:
+                return
+            else:
+                raise RuntimeError("generator didn't stop")
+        else:
+            try:
+                self.gen.throw(type, value, traceback)
+            except (type, StopIteration):
+                return
+            else:
+                raise RuntimeError("generator caught exception")
+
+def contextmanager(func):
+    def helper(*args, **kwds):
+        return GeneratorContextManager(func(*args, **kwds))
+    return helper