I hate modules that insist on writing stuff to disk, and force me to re-open the output file in order to get the data back into my program

That's why other Monks suggested that both interfaces be supported. Your post would make it three. But that's fine, as long as each one is documented and maintained. Choice is good. False dilemmas are bad.

In reply to Re^2: Should Modules Do I/O? by Mugatu
in thread Should Modules Do I/O? by pboin

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