issue14427 - Document Request.get_header and Request.header_items

Doc/library/urllib.request.rst

@@ -502,6 +502,18 @@ request.
 
    .. deprecated:: 3.3
 
+.. method:: Request.get_header(header_name, default=None)
+
+   Return the value of the given header. If the header is not present, return
+   the default value.
+
+
+.. method:: Request.header_items()
+
+   Return a list of tuples (header_name, header_value) of the Request headers.
+
+
+.. method:: Request.set_proxy(host, type)
 
 .. method:: Request.get_origin_req_host()