diff -r ea421c534305 Objects/bytearrayobject.c
--- a/Objects/bytearrayobject.c	Sat Dec 17 07:08:30 2011 +0100
+++ b/Objects/bytearrayobject.c	Sat Dec 17 18:06:33 2011 +0100
@@ -2890,18 +2890,16 @@
 PyDoc_STRVAR(bytearray_doc,
 "bytearray(iterable_of_ints) -> bytearray\n\
 bytearray(string, encoding[, errors]) -> bytearray\n\
-bytearray(bytes_or_bytearray) -> mutable copy of bytes_or_bytearray\n\
-bytearray(memory_view) -> bytearray\n\
+bytearray(bytes_or_buffer) -> mutable copy of bytes_or_buffer\n\
+bytearray(int) -> bytes array of size given by the parameter initialized with null bytes\n\
+bytearray() -> empty bytes array\n\
 \n\
 Construct an mutable bytearray object from:\n\
   - an iterable yielding integers in range(256)\n\
   - a text string encoded using the specified encoding\n\
-  - a bytes or a bytearray object\n\
+  - a bytes or a buffer object\n\
   - any object implementing the buffer API.\n\
-\n\
-bytearray(int) -> bytearray\n\
-\n\
-Construct a zero-initialized bytearray of the given length.");
+  - an integer");
 
 
 static PyObject *bytearray_iter(PyObject *seq);
diff -r ea421c534305 Objects/bytesobject.c
--- a/Objects/bytesobject.c	Sat Dec 17 07:08:30 2011 +0100
+++ b/Objects/bytesobject.c	Sat Dec 17 18:06:33 2011 +0100
@@ -2732,13 +2732,14 @@
 "bytes(iterable_of_ints) -> bytes\n\
 bytes(string, encoding[, errors]) -> bytes\n\
 bytes(bytes_or_buffer) -> immutable copy of bytes_or_buffer\n\
-bytes(memory_view) -> bytes\n\
+bytes(int) -> bytes object of size given by the parameter initialized with null bytes\n\
+bytes() -> empty bytes object\n\
 \n\
 Construct an immutable array of bytes from:\n\
   - an iterable yielding integers in range(256)\n\
   - a text string encoded using the specified encoding\n\
-  - a bytes or a buffer object\n\
-  - any object implementing the buffer API.");
+  - any object implementing the buffer API.\n\
+  - an integer");
 
 static PyObject *bytes_iter(PyObject *seq);