[docs] [issue12760] Add create mode to open()

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

Ah, right. Well I think all arguments against it were quite weak (or even wrong). Let's see:

- it's not cross-platform: actually it is (OS_EXCL has been POSIX since at least 1997 (*), and Windows also has it)

- os.open followed by os.fdopen is easy: it isn't that easy to get the incantation right (the pure Python open() in _pyio is 70 lines of code), especially if you want the file object to have the right "name" attribute

- it doesn't fill a use case: actually, avoiding race conditions is an important use case, even though many people may never encounter it (I must admit I myself never really cared about this)

So this looks like a reasonable feature request IMHO.

(*) http://pubs.opengroup.org/onlinepubs/007908799/xsh/open.html

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