update the Python 3 stdlib to v3.2.5

1 files changed, 14 insertions, 11 deletions

diff --git a/lib-python/3/gzip.py b/lib-python/3/gzip.py
index 1de23b6972..6aacc9a4f9 100644
--- a/lib-python/3/gzip.py
+++ b/lib-python/3/gzip.py
@@ -137,9 +137,10 @@ class GzipFile(io.BufferedIOBase):
         A mode of 'r' is equivalent to one of 'rb', and similarly for 'w' and
         'wb', and 'a' and 'ab'.
 
-        The compresslevel argument is an integer from 1 to 9 controlling the
+        The compresslevel argument is an integer from 0 to 9 controlling the
         level of compression; 1 is fastest and produces the least compression,
-        and 9 is slowest and produces the most compression.  The default is 9.
+        and 9 is slowest and produces the most compression. 0 is no compression
+        at all. The default is 9.
 
         The mtime argument is an optional numeric timestamp to be written
         to the stream when compressing.  All gzip compressed streams
@@ -159,9 +160,8 @@ class GzipFile(io.BufferedIOBase):
         if fileobj is None:
             fileobj = self.myfileobj = builtins.open(filename, mode or 'rb')
         if filename is None:
-            if hasattr(fileobj, 'name') and isinstance(fileobj.name, str):
-                filename = fileobj.name
-            else:
+            filename = getattr(fileobj, 'name', '')
+            if not isinstance(filename, (str, bytes)):
                 filename = ''
         if mode is None:
             if hasattr(fileobj, 'mode'): mode = fileobj.mode
@@ -236,7 +236,8 @@ class GzipFile(io.BufferedIOBase):
             # RFC 1952 requires the FNAME field to be Latin-1. Do not
             # include filenames that cannot be represented that way.
             fname = os.path.basename(self.name)
-            fname = fname.encode('latin-1')
+            if not isinstance(fname, bytes):
+                fname = fname.encode('latin-1')
             if fname.endswith(b'.gz'):
                 fname = fname[:-3]
         except UnicodeEncodeError:
@@ -366,8 +367,10 @@ class GzipFile(io.BufferedIOBase):
             if self.fileobj is None:
                 return b''
             try:
-                # 1024 is the same buffering heuristic used in read()
-                self._read(max(n, 1024))
+                # Ensure that we don't return b"" if we haven't reached EOF.
+                while self.extrasize == 0:
+                    # 1024 is the same buffering heuristic used in read()
+                    self._read(max(n, 1024))
             except EOFError:
                 pass
         offset = self.offset - self.extrastart
@@ -573,7 +576,7 @@ class GzipFile(io.BufferedIOBase):
 
 def compress(data, compresslevel=9):
     """Compress data in one shot and return the compressed string.
-    Optional argument is the compression level, in range of 1-9.
+    Optional argument is the compression level, in range of 0-9.
     """
     buf = io.BytesIO()
     with GzipFile(fileobj=buf, mode='wb', compresslevel=compresslevel) as f:
@@ -621,9 +624,9 @@ def _test():
             if not chunk:
                 break
             g.write(chunk)
-        if g is not sys.stdout:
+        if g is not sys.stdout.buffer:
             g.close()
-        if f is not sys.stdin:
+        if f is not sys.stdin.buffer:
             f.close()
 
 if __name__ == '__main__':