.. function:: urlopen(url, data=None[, timeout], *, cafile=None, capath=None, cadefault=False, context=None)
- Open the URL *url*, which can be either a string or a
- :class:`Request` object.
+ Open *url*, which can be either a string containing a valid, properly
+ encoded URL, or a :class:`Request` object.
*data* must be an object specifying additional data to be sent to the
server, or ``None`` if no such data is needed. See :class:`Request`
This class is an abstraction of a URL request.
- *url* should be a string containing a valid URL.
+ *url* should be a string containing a valid, properly encoded URL.
*data* must be an object specifying additional data to send to the
server, or ``None`` if no such data is needed. Currently HTTP