shared file access in python

[Jeff Epler]

The file() constructor probably takes any second argument that your OS's
fopen() does, though this may have changed with the creation of
universal newlines.

If there's something that os.open() can do that file() can't, you
should be able to achieve it by using os.fdopen(): (untested)
    def magic_file(filename, flag=os.O_RDONLY, mode='r', bufsize=None):
        fd = os.open(filename, flag)
        return os.fdopen(fd, mode, bufsize)

I don't know what _open or fsopen are.

Jeff
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