[Python-Dev] The path module PEP

[Ian Bicking]

Gustavo J. A. M. Carneiro wrote:
>   On a slightly different subject, regarding path / path, I think it
> feels much more natural path + path.  Path.join is really just a string
> concatenation, except that it adds a path separator in the middle if
> necessary, if I'm not mistaken.

No, it isn't, which maybe is why / is bad.  os.path.join(a, b) basically 
returns the path as though b is interpreted to be relative to a.  I.e., 
os.path.join('/foo', '/bar') == '/bar'.  Not much like concatenation at 
all.  Plus string concatenation is quite useful with paths, e.g., to add 
an extension.

If a URI class implemented the same methods, it would be something of a 
question whether uri.joinpath('/foo/bar', 'baz') would return '/foo/baz' 
(and urlparse.urljoin would) or '/foo/bar/baz' (as os.path.join does). 
I assume it would be be the latter, and urljoin would be a different 
method, maybe something novel like "urljoin".


-- 
Ian Bicking  |  ianb at colorstudy.com  |  http://blog.ianbicking.org