The Nineteenth Byte

Alex A.

3:00 AM

> Nit Who Fried Chicken

Geobits

alex-is-wrong

Dennis

hahahaha

Cᴏɴᴏʀ O'Bʀɪᴇɴ

I'm gone for maybe an hour.

Alex A.

Maybe an hour, maybe two. Who knows.

Time is an illusion.

Geobits

Time might be an illusion, but an hour isn't.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

3:06 AM

Our hour isn't, anyhow.

Anonymous

They could say "the connection is probably lost," but it's more fun to do naive time-averaging to give you hope that if you wait around for 1,163 hours, it will finally finish.

5

Cᴏɴᴏʀ O'Bʀɪᴇɴ

It has friends? Since when?

Cyoce

urbandictionary.com/define.php?term=Jolf

Geobits

It's strange how you can use time as a stand-in for distance (I live about an hour away from X), but it doesn't work the other way around (I've got three miles of work left).

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Geobits that is interesting

Geobits

3:09 AM

Anyway, I can only chat for a few more kilometers.

7

Dennis

@Geobits That depends on the type of work. Road paving, for example.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Cyoce ಠ_ಠ

orlp

fire demo

Worst Fire Safety Demo Ever

►

Cyoce

@CᴏɴᴏʀO'Bʀɪᴇɴ ¯\_(ツ)_/¯

Sp3000

Reminds me, need to finish that writeup for the predicting starred messages challenge

I swear, there were so many oneboxes in the test data

Geobits

3:11 AM

@Dennis Yea, I thought of that while typing it, but didn't want to be bothered coming up with a better example. I thought surely nobody would point it out :P

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Geobits "Surely, nobody will create a language that is shorter than anything else."

s/nobody/Dennis/g

Geobits

Who's Shirley?

Dennis

@Geobits ¯\_(ツ)_/¯

Alex A.

@Geobits this made me laugh on loudly

@Geobits Dennis' sister, obviously.

Shirley Golfsalot.

@Geobits yes

Cᴏɴᴏʀ O'Bʀɪᴇɴ

:27100359 But you must pay for the seventh.

Geobits

3:16 AM

For the record, I can't count.

2

Cyoce

Q1.
$1srP

so messy

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Say I have a program prog.py in a folder. In said folder, there is a subfolder. From prog.py, how can I get all files in that subfolder?

(python question)

Geobits

import files_from_subfolder

Cᴏɴᴏʀ O'Bʀɪᴇɴ

What if I don't know their names?

Cyoce

from sub import *              ?

(just a guess)

grc

3:19 AM

@CᴏɴᴏʀO'Bʀɪᴇɴ glob?

Geobits

@CᴏɴᴏʀO'Bʀɪᴇɴ No, that's the module to import. It was a very poorly executed joke.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Oh, haha.

Dennis

exec(joke); #haha

Cyoce

read the folder and then do a for loop on the files and do __import__(filename)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Cyoce I think this works actually

lemme check

nvm

Geobits

3:21 AM

@Dennis Error on line 1: Cannot parse 'joke'

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@grc Let me check into that

El'endia Starman

I think you'd have to do from subfolder import * and put an empty init.py in there to tell Python that it's a module.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@grc This works, thanks (I think)

Alex A.

HALP FOR A SEC

Cᴏɴᴏʀ O'Bʀɪᴇɴ

?

Alex A.

3:24 AM

A bowl contains 7 red balls and 9 blue balls.

Dennis

@Geobits Lies

Alex A.

A woman selects 4 balls at random from the bowl.

Dennis

> blue balls

Alex A.

How many different selections are possible if at least 3 balls must be blue?

@Dennis ( ͡° ͜ʖ ͡°)

> 3 balls

Geobits

>_>

Alex A.

3:25 AM

#modlife

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman I don't think it worked

Geobits

Are the selections distinct if they both have 3 blue and 1 red?

Alex A.

I don't think so

Geobits

Then it can only be [4 blue] or [3 blue, 1 red], no?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

controller.py
	from bots import *
	print(test(5))

bots/test_bot.py
	def test(x):
		return x + 3

bots/init.py
	(empty)

Alex A.

3:26 AM

@CᴏɴᴏʀO'Bʀɪᴇɴ s/\t/ /

El'endia Starman

hmm

Alex A.

@Geobits That's what I was thinking, but apparently it isn't correct.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@AlexA. s/.+//

Dennis

@AlexA. s#s/\t/ /#ty for using tabs#

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Dennis :D

Geobits

3:27 AM

@AlexA. I think your "I don't think so" isn't right, then.

Alex A.

(For context, I'm helping my girlfriend with her probability homework and failing miserably)

@Geobits In that case I think so

Cᴏɴᴏʀ O'Bʀɪᴇɴ

HAI ALEX'S GIRLFRIEND

WE ARE SMARTZ N STUFF

El'endia Starman

OH. @CᴏɴᴏʀO'Bʀɪᴇɴ, the init.py file should be named __init__.py.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman Ohhh.

El'endia Starman

188

A: Python: import a file from a subdirectory

Take a look at the Packages documentation (Section 6.4) here: http://docs.python.org/tutorial/modules.html In short, you need to put a blank file named __init__.py in the "lib" directory.

^ source

Geobits

3:29 AM

@AlexA. I guess you could do it the other way, with distinctness not based on color. Something like 16c4 total, then figure out how many have >=3 blue.

Anonymous

Alternatively:

Anonymous

import os
for f in os.listdir('./folder/*.py'):
  execfile(f)

Anonymous

(that's a very bad idea and you shouldn't do it)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman That works for a single file, but not for from bots import *

@Mego I'll use it if I can't get this to work.

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ Don't.

Anonymous

3:31 AM

^

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Then I better find a way to get this to work :P

Cyoce

out of curiosity, why not?

Alex A.

@Geobits Distinctness not based on color seems so odd given the information in the problem (i.e. color being mentioned and other distibguishable properties not)

El'endia Starman

@Cyoce Mego's code will run all code in every Python file in the subfolder.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

I mean, I'll use the execfile solution.

Anonymous

3:32 AM

For the import * to work, you need to define __all__ in __init__.py

Geobits

@AlexA. I would think so too, but I can't figure out how it wouldn't just be two in that case. Unless order chosen is important?

As in BBBR is distinct from BRBB.

Anonymous

Where __all__ is a list of the files that can be imported

Cᴏɴᴏʀ O'Bʀɪᴇɴ

1 hour ago, by Cᴏɴᴏʀ O'Bʀɪᴇɴ

Not only am I a #Pythnoob, I'm a #Pythonnoob

Alex A.

@Geobits If that were the case, the answer would be 5, right?

Anonymous

docs.python.org/2/tutorial/…

Geobits

3:33 AM

Should be.

Alex A.

That also isn't right.

Doorknob

@Geobits What's the question?

Alex A.

We tried that earlier.

Geobits

Ask Alex. He keeps being wrong.

Alex A.

9 mins ago, by Alex A.

HALP FOR A SEC

(and the following stuff)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

3:33 AM

@Mego Soo, I can't dynamically get all files from a folder? :(

Doorknob

@AlexA. sorry it took a second for that page to load so I ran out of help quota

Alex A.

haha

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ Considering we do it all the time...that doesn't seem right.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Yeah, I know...

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ Sure you can.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

3:34 AM

@Mego TELL MEH

Doorknob

@AlexA. Oh, I've been studying for the AMC10 and this seems very similar to some of the practice problems :P

Alex A.

@Doorknob !!

(Also what is the AMC10)

Doorknob

maa.org/math-competitions

El'endia Starman

American Math Competition for 10th graders (?)

Geobits

It's a theater.

Alex A.

3:36 AM

@El'endiaStarman :O

@Geobits ಠ_ಠ

Geobits

Sorry, couldn't resist :D

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ gist.github.com/Mego/542dae65b7316f3b69b6

Doorknob

@AlexA. I think the easiest way to do this is just manual casework. Calculate all four cases of selecting three blue balls (BBBR, BBRB, BRBB, RBBB) and add 'em up.

El'endia Starman

@AlexA.: Do you know the answer to the probability problem, or are you submitting answers to a verification program?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH>controller
Traceback (most recent call last):
  File "C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH\controller.p
y", line 8, in <module>
    from bots import *
  File "C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH\bots\__init_
_.py", line 3, in <module>
    __all__ = map(lambda x:os.path.splitext(x)[0], os.listdir('*.py'))
OSError: [WinError 123] The filename, directory name, or volume label syntax is
incorrect: '*.py'

@Mego

Alex A.

3:37 AM

@El'endiaStarman The latter

El'endia Starman

Also, considering that this is a probability problem, and not just a combinatorics problem, the question might be asking for all possible ways to select balls as if they were distinguishable. Well, sorta.

Alex A.

@Doorknob That would give an answer of 5, right? Because it's at least 3 blue, so it can be 4 blue.

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ Try ./*.py

Doorknob

@AlexA. Hang on, I'm doing it on my calculator now

Anonymous

Also try not using Windows

Cᴏɴᴏʀ O'Bʀɪᴇɴ

3:38 AM

@Mego same error

Doorknob

@AlexA. Oh, right, you'd need to take into account BBBB also.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego 1) I am not in a position to buy a computer and 2) I like windows because I'm used to it.

El'endia Starman

As there are 9 blue balls, there are (9 C 3)*7 ways to get 3B1R and (9 C 4) ways to get 4B.

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ Cygwin

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego wat?

Anonymous

3:39 AM

cygwin.com

Geobits

Yahoo! Answers seems on point for once.

Anonymous

Oh wait I'm doing the wrong syntax

Cᴏɴᴏʀ O'Bʀɪᴇɴ

o_o

Doorknob

@El'endiaStarman Yeah, I think this is accurate

Anonymous

Fixed it

Anonymous

3:41 AM

@CᴏɴᴏʀO'Bʀɪᴇɴ See gist now

Cᴏɴᴏʀ O'Bʀɪᴇɴ

okayC:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH>controller
Traceback (most recent call last):
  File "C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH\controller.p
y", line 8, in <module>
    from bots import *
  File "C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH\bots\__init_
_.py", line 3, in <module>
    __all__ = filter(map(lambda x:os.path.splitext(x)[0] if x.endswith('.py') el
se None, os.listdir('.')))
TypeError: filter expected 2 arguments, got 1

Anonymous

wat

Alex A.

@Geobits Wow, and not a single mention of babbies. +1 and accepted.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego TypeError: filter expected 2 arguments, got 1

Anonymous

Make the first arg for filter None

Anonymous

3:43 AM

So filter(None,map...)

quartata

@Doorknob :chat! is going to get frozen :P

Geobits

@AlexA. Go figure. Googling the exact text of the problem worked >_>

Cᴏɴᴏʀ O'Bʀɪᴇɴ

C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH>controller
Traceback (most recent call last):
  File "C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH\controller.p
y", line 8, in <module>
    from bots import *
TypeError: 'filter' object does not support indexing

C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH>

Doorknob

In unrelated news, I'm trying to golf an essay

Alex A.

haha

Doorknob

3:43 AM

I'm limited to ≤300 words and I have 312

quartata

Can general discussion rooms get frozen like that?

mınxomaτ

A user named DonaldTrump just joined the TrackMania server I was on and cheated his way to the first place using a wallhack ಠ_ಠ

Doorknob

@quartata yes

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Doorknob I can help. I've golfed 100 words off of mine once.

Sp3000

#define q <entire essay here>

5

Alex A.

3:44 AM

@El'endiaStarman You're exactly right! It's 714 because it's (in R terms) 7 * choose(9, 3) + choose(9, 4).

Doorknob

@Sp3000 Standard loophole! :P

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Doorknob There are no loopholes in life. You do what you have to do. Make America great again.

quartata

@Doorknob that's sad. what happened to vi SE?

Alex A.

?

Doorknob

@quartata whaddya mean, what happened? Most sites' chatrooms are typically nowhere near as active as this one.

Alex A.

3:45 AM

^

Geobits

Doorknob just wishes Puzzling chat was this active so he could leave us forever.

Alex A.

Anyway, thanks so much for your help, @Geobits, @El'endiaStarman, and @Doorknob! I (and of course my girlfriend) really appreciate it!

Cᴏɴᴏʀ O'Bʀɪᴇɴ

We should marry Puzzling into PPCG so we could justify the title! #badideas.

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ There, it's 100% simpler now

El'endia Starman

@AlexA. Welcome! :)

Combinatorics and probability are a relative strength of mine, but it's a field I'm not particularly excited by. Go figure. :P

quartata

3:47 AM

nvm i am idiot I thought :set bounty = new main posts

Cᴏɴᴏʀ O'Bʀɪᴇɴ

C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH>controller
Traceback (most recent call last):
  File "C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH\controller.p
y", line 8, in <module>
    from bots import *
AttributeError: 'module' object has no attribute 'controller'

C:\Users\Conor O'Brien\Documents\Programming\~A-M\~H-M\KotH>

I am so sorry @Mego

maybe it's my problem?

PhiNotPi

@El'endiaStarman I'm also a fan of the strong Bayesian interpretation. en.wikipedia.org/wiki/Quantum_Bayesianism

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ No need to apologize; I'm probably doing something silly in my code

PhiNotPi

Nevermind the fact that they are complete opposites.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego Oh, okay. Thanks ^_^

Anonymous

3:48 AM

You're putting that as KotH/bots/__init__.py, right?

Geobits

First World Problems: Check status on order a day after placing it... still Processing order D:

4

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego Yes.

Geobits

I mean, it's been a whole day now! Ship it!

mınxomaτ

Amazon has 12h shipping in my area now. That's just scary. (In the same way 200GB microSD cards are scary).

Alex A.

haha

El'endia Starman

3:53 AM

@mınxomaτ Imagine what it's like in Seattle...

They have a distribution center there.

mınxomaτ

Yeah, the dispatch is about 30km from my house. Just a few minutes really.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

G'night people

Dennis

Doorknob

@Dennis Congrats! \o/ \o/

Dennis

:)

(I should find three things to downvote.)

Alex A.

4:02 AM

Congratulations to our memetic, unoutgolfable moderator @Dennis for reaching 60,000 rep!

11

@Dennis yas

Doorknob

Oh, also:

^ Congrats @daniero! \o/

4

Alex A.

(I tried to make a starworthy post about Dennis' rep and yet no stars. I'm sorry I've failed you, Dennis, my sensei.)

Dennis

> Memetics is a theory of mental content based on an analogy with Darwinian evolution, originating from the popularization of Richard Dawkins' 1976 book The Selfish Gene. Proponents describe memetics as an approach to evolutionary models of cultural information transfer.

o_O

@AlexA. Looks pretty starred to me. :)

Alex A.

@Dennis I meant "memetic" as in "relating to a meme." :P

Doorknob

Argghhh! I still have to golf 8 words off of this essay. :P

Dennis

4:10 AM

That N-th N contest sure is close. Jelly 8, Pyth 9 and AWK(!) 10.

Doorknob

Wait, awk? O_o

Dennis

AWK!

21

A: Remove every N-th N

awk, 10 bytes Input is expected on STDIN, one number per line. ++a[$1]%$1 Explanation Keeps a counter for each number in an associative array, prints only if the counter value modulo n is not zero. Printing is implicit. Long version: ++a[$1]%$1{print $0}

Doorknob

... wow

Dennis

Yeah, that doesn't happen every day.

Thomas Kwa

For a while I thought I would lose to awk with Pyth on posting time.

Dennis

4:13 AM

Nice golf btw. I didn't expect that you could use a like that.

Alex A.

Well that's awkward.

Geobits

@Doorknob Your superpinger is showing o_o

Dennis

Also, 5 variable references in 9 bytes of code has to be some sort of record.

Alex A.

@Geobits Jeez dude, put on some superpants

Thomas Kwa

Yeah, I didn't think a deserved its one-byte spot until now, @Dennis

Maybe it still doesn't. I'm not sure.

Hello @ՊՓԼՃՐՊՃՈԲՍԼ

ՊՓԼՃՐՊՃՈԲՍԼ

4:25 AM

Hi

I'm still trying to comprehend the beauty of that awk answer

Anonymous

Oh wow his name loaded correctly

Anonymous

The gpu driver update I did must've worked

Alex A.

@Doorknob Is Vim good for Java?

quartata

4:42 AM

Vim is pretty much good for everything except Befunge.

If you mean "does Vim have syntax coloring for Java" then yes

Alex A.

._.

Dennis

IDK if vim is good for Java, but jQuery is good for you!

quintopia

can someone tell me what command line command to use to start the pandemic KoTH controller pretty please? it's been a hell of a long time since i had to deal with java's oddities

Cyoce

crap

2

I forgot to make PlatyPar's range work for a>b

quintopia

nvm got it

Alex A.

4:50 AM

@Dennis Someone should make a jQuery for the Java

Geobits

Use Rhino to embed that sweet jQuery directly into it >_>

Alex A.