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How about this:
- 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.
+ Following the syntax specifications in RFC 1808, urlparse recognizes
+ a netloc only if it is properly introduced by '//'. Otherwise the
+ input must be presumed to be a relative URL and thus to start with
+ a path component.
However, it seems to me there is a bug here:
>>> urlparse.urlparse('www.k.com:80/path')
ParseResult(scheme='', netloc='', path='www.k.com:80/path', params='',
query='', fragment='')
>>> urlparse.urlparse('www.k.com:path')
ParseResult(scheme='www.k.com', netloc='', path='path', params='',
query='', fragment='')
I think the second one is correct and that the first one should produce
ParseResult(scheme='www.k.com', netloc='', path='80/path', params='',
query='', fragment='')
I haven't read all the way through the RFC again, though. But *one*
of the above is wrong.