Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)
Mark H Harris
harrismh777 at gmail.com
Tue Apr 1 17:26:22 EDT 2014
On 3/31/14 3:46 PM, Rhodri James wrote:
>> I was using arpanet since the late 1970s.
>
> I was using JANet since the early 80s, and I'm by no means the oldest
> person here. I should stop playing that card if I were you.
My point (which you missed) is not how old I am, rather, for some of
us 1991 is NOT ancient history. Also, that some people have a rather
unusual "memory" of history that, surprising to those of us who were
living then, does not match up.
My experience in the mid-to-late 1970s was on an IBM 360 mod44
mainframe (high-speed number cruncher)(at the time only 11 of them
existed in the world). We were connected on the net (at a time when most
people didn't know there was a net). Its not a 'card' its just a fact.
We used our machine to analyze electrocardiograms. (it was the first in
the world to do that, Upsher Laboratories, K.C. MO USA).
Its not a snotty holier than thou thing, its just an experience and
accomplishment thing (if you don't value the testimony, well, plonk).
>>>> I didn't really start using unicode
>>>> until about 5 years ago; python has only really used it since python3.
>>>> right?
>>> No. Python 2.2 introduced Unicode.
>> I didn't ask when it was introduced, I asked when it became useful?
> No you didn't.
Yes, I did. Our common English is apparently getting in the way.
Well, I speak American English, and you don't, apparently; U.K.?
Python3 finally started getting unicode right. The fact that it
'existed' in some form prior to (3) is not meaningful, nor helpful.
When I said, "python has only really used it since python3, right?," I
meant that unicode in python2 was a mess (and incomplete, and I could go
on) but finally---in python3---it is becoming useful (even though it
still has glitches). I don't know why we need to argue about it.
I do regret that you misinterpreted my meaning. That is always
frustrating, for me.
> *plonk*
You choice. I never *plonk* anyone. Even the dull and ignorant have
their story. YMMV--- plonk away, God save the Queen.
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