Fix the wrong urllib exampls which use str for POST data. Closes Issue11261
diff --git a/Doc/library/urllib.request.rst b/Doc/library/urllib.request.rst
index b51ce3f..24e2444 100644
--- a/Doc/library/urllib.request.rst
+++ b/Doc/library/urllib.request.rst
@@ -138,14 +138,13 @@
*url* should be a string containing a valid URL.
- *data* may be a string specifying additional data to send to the
- server, or ``None`` if no such data is needed. Currently HTTP
- requests are the only ones that use *data*; the HTTP request will
- be a POST instead of a GET when the *data* parameter is provided.
- *data* should be a buffer in the standard
- :mimetype:`application/x-www-form-urlencoded` format. The
- :func:`urllib.parse.urlencode` function takes a mapping or sequence
- of 2-tuples and returns a string in this format.
+ *data* may be a bytes object specifying additional data to send to the
+ server, or ``None`` if no such data is needed. Currently HTTP requests are
+ the only ones that use *data*; the HTTP request will be a POST instead of a
+ GET when the *data* parameter is provided. *data* should be a buffer in the
+ standard :mimetype:`application/x-www-form-urlencoded` format. The
+ :func:`urllib.parse.urlencode` function takes a mapping or sequence of
+ 2-tuples and returns a string in this format.
*headers* should be a dictionary, and will be treated as if
:meth:`add_header` was called with each key and value as arguments.
@@ -1122,10 +1121,10 @@
size in response to a retrieval request.
If the *url* uses the :file:`http:` scheme identifier, the optional *data*
- argument may be given to specify a ``POST`` request (normally the request type
- is ``GET``). The *data* argument must in standard
- :mimetype:`application/x-www-form-urlencoded` format; see the :func:`urlencode`
- function below.
+ argument may be given to specify a ``POST`` request (normally the request
+ type is ``GET``). The *data* argument must be a bytes object in standard
+ :mimetype:`application/x-www-form-urlencoded` format; see the
+ :func:`urlencode` function below.
:func:`urlretrieve` will raise :exc:`ContentTooShortError` when it detects that
the amount of data available was less than the expected amount (which is the