Tim,
This may be a bit awkward.
I am not sure a question on the python list expects to get a one-liner, let
alone in an unrelated language like AWK. Unless you install other environments
like Cygwin, AWK does not tend to be available of platforms like Windows. Ditto
for PERL and other languages or tools you want to use this way.
There are times people appreciate something sophisticated or clever or even
innovative.
My personal take on this question is of someone who does not necessarily know
what they need to do, let alone in python. And they did not specify how the
data is supplied or whether it is a one-time thing.
The two numbers needed could be supplied on the command line and gotten using
argv or gotten using two input statements or read from a file or stdin. Or they
could be asking for a cumulative set of wins/losses to be contiuously evaluated
and as soon as the threshold of 31% is attained, print a message. OR, there
could be a previously agreed upon number of games, such as 164, and you get
win/loss criteria some way and you want the percentage of wins divided by the
164 to be 31%.
My GUESS is they are getting a stream of win/win/loss/win/loss/... type of
data, maybe one per line of text, maybe as 0 versus 1, but who knows. If we
knew exactly, it might lead to trivial solutions. For example, if they had a
series of 0/1 you could do a sum() and a count() and divide.
But what if the scenario was to provide a score like 5 - 3 using whatever
notation. Now you need to figure out if your side won and perhaps deal with
ties before counting and dividing.
Too many scenarios are possible but the simple answer is more like someone else
said.
Count the number of wins, or keep track of it.
Count the total you need.
Divide one by the other and compare it to 0.31 or 31 depending on your
calculation method.
Your solution in AWK assumes lots of things. You assume the data is either on
stdin or comes from automatically opening file names on the command line to
generate a stream of lines. You assume a win is any line containing one or more
lower or upper case instances of the letter W. You let AWK count lines and
store that in NR and assume anything without a W is a loss. You print a running
commentary and only at the end of input state if they exceeded 31%.
Now that is quite possibly a way to go. But the data may not be set up that way
or they may want to quit as soon as the threshold is reached or there may be
blank lines or a notation for a tie. Some of those may not be one-liners. Yours
would read much better if spaced out, but you might have written it this way
when you were 😉
But, as mentioned, this is a python board. Would you care to do the same thing
as a brief program in that language.
If we had that pesky := operator, maybe.
Just kidding.
-----Original Message-----
From: Python-list <python-list-bounces+avigross=verizon....@python.org> On
Behalf Of Tim Chase
Sent: Saturday, December 8, 2018 4:00 PM
To: Musatov <tomusa...@gmail.com>
Cc: python-list@python.org
Subject: Re: Program to keep track of success percentage
On 2018-12-08 10:02, Musatov wrote:
> I am thinking about a program where the only user input is win/loss.
> The program let's you know if you have won more than 31% of the time
> or not. Any suggestions about how to approach authoring such a
> program? Thanks. --
Can be done with an awk one-liner:
awk '/[wW]/{w+=1}{printf("W: %i L: %i %i%%\n", w, NR-w, w * 100/NR)}END{if (w *
100/NR > 31) print "More than 31% winning"}'
-tkc
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