file.write() may return something with the new IO framework.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index f06ca2c..18131b9 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -2055,9 +2055,13 @@
.. method:: file.write(str)
- Write a string to the file. There is no return value. Due to buffering, the
- string may not actually show up in the file until the :meth:`flush` or
- :meth:`close` method is called.
+ Write a string to the file. Due to buffering, the string may not actually
+ show up in the file until the :meth:`flush` or :meth:`close` method is
+ called.
+
+ The meaning of the return value is not defined for every file-like object.
+ Some (mostly low-level) file-like objects may return the number of bytes
+ actually written, others return ``None``.
.. method:: file.writelines(sequence)