Fix Issue754016 - urlparse goes wrong with IP:port without scheme
diff --git a/Doc/library/urllib.parse.rst b/Doc/library/urllib.parse.rst
index add07a5..b915f29 100644
--- a/Doc/library/urllib.parse.rst
+++ b/Doc/library/urllib.parse.rst
@@ -48,6 +48,23 @@
>>> o.geturl()
'http://www.cwi.nl:80/%7Eguido/Python.html'
+ If the scheme value is not specified, urlparse following the syntax
+ specifications from RFC 1808, expects the netloc value to start with '//',
+ Otherwise, it is not possible to distinguish between net_loc and path
+ component and would classify the indistinguishable component as path as in
+ a relative url.
+
+ >>> from urlparse import urlparse
+ >>> urlparse('//www.cwi.nl:80/%7Eguido/Python.html')
+ ParseResult(scheme='', netloc='www.cwi.nl:80', path='/%7Eguido/Python.html',
+ params='', query='', fragment='')
+ >>> urlparse('www.cwi.nl:80/%7Eguido/Python.html')
+ ParseResult(scheme='', netloc='', path='www.cwi.nl:80/%7Eguido/Python.html',
+ params='', query='', fragment='')
+ >>> urlparse('help/Python.html')
+ ParseResult(scheme='', netloc='', path='help/Python.html', params='',
+ query='', fragment='')
+
If the *scheme* argument is specified, it gives the default addressing
scheme, to be used only if the URL does not specify one. The default value for
this argument is the empty string.