# HG changeset patch
# Parent 04162e06323f369c1468d2009b4d8ba6805a6b0c

diff -r 04162e06323f Lib/_compression.py
--- a/Lib/_compression.py	Sun May 31 09:16:13 2015 +0300
+++ b/Lib/_compression.py	Mon Jun 01 12:29:00 2015 +0000
@@ -60,6 +60,11 @@
         self._decompressor = None
         return super().close()
 
+    @property
+    def closed(self):
+        # This is polled for every operation; default implemenation too slow
+        return self._decompressor is None
+
     def seekable(self):
         return self._fp.seekable()
 
diff -r 04162e06323f Lib/gzip.py
--- a/Lib/gzip.py	Sun May 31 09:16:13 2015 +0300
+++ b/Lib/gzip.py	Mon Jun 01 12:29:00 2015 +0000
@@ -371,6 +371,11 @@
         self._check_not_closed()
         return self._buffer.readline(size)
 
+    def __iter__(self):
+        # Shortcut to bypass the readline() method above
+        self._check_not_closed()
+        return iter(self._buffer)
+
 
 class _GzipReader(_compression.DecompressReader):
     def __init__(self, fp):
diff -r 04162e06323f Lib/lzma.py
--- a/Lib/lzma.py	Sun May 31 09:16:13 2015 +0300
+++ b/Lib/lzma.py	Mon Jun 01 12:29:00 2015 +0000
@@ -219,6 +219,11 @@
         self._check_can_read()
         return self._buffer.readline(size)
 
+    def __iter__(self):
+        # Shortcut to bypass the readline() method above
+        self._check_can_read()
+        return iter(self._buffer)
+
     def write(self, data):
         """Write a bytes object to the file.