On Tue, 19 Mar 2013 21:44:15 -0700
Michael Foord <fuzzyman at voidspace.org.uk> wrote:
>
> mock_open makes it easy to put a StringIO in place if that's what you want. It's just a simple helper function for providing some known data *along with the Mock api* to make asserts that it was used correctly. It isn't presenting a full file-system. My suggestion to the implementor of the patch was that read / readline / readlines be disconnected - but the patch provided allows them to be interleaved and I saw no reason to undo that.
>
> If users want more complex behaviour (like universal newline support) they can use mock_open along with a StringIO.
This is not about complex behaviour but simply correct behaviour.
For the record, universal newlines are enabled by default in Python 3:
>>> with open("foo", "wb") as f: f.write(b"a\r\nb\rc\n")
...
7
>>> with open("foo", "r") as f: print(list(f))
...
['a\n', 'b\n', 'c\n']
Regards
Antoine.
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