Issue #7232: Add support for the context manager protocol
to the TarFile class.
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index eb42055..45928fd 100644
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -2411,6 +2411,20 @@
         """
         if level <= self.debug:
             print >> sys.stderr, msg
+
+    def __enter__(self):
+        self._check()
+        return self
+
+    def __exit__(self, type, value, traceback):
+        if type is None:
+            self.close()
+        else:
+            # An exception occurred. We must not call close() because
+            # it would try to write end-of-archive blocks and padding.
+            if not self._extfileobj:
+                self.fileobj.close()
+            self.closed = True
 # class TarFile
 
 class TarIter: