Pyth Training - 2017-07-26

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Mr. Xcoder

06:00

room topic changed to Pyth Academy: A room founded by Jim and Mr.Xcoder for golfing Pyth assignments [code-golf] [pyth]

> If anyone is willing to enter this chatroom and practise Pyth with Jim and I, feel free to press the "request access" button.

room topic changed to Pyth Training: A room founded by Jim and Mr.Xcoder for golfing Pyth assignments [code-golf] [pyth]

7 hours later…

Mr. Xcoder

12:49

@Jim I asked Leaky to solve our first N primes CMC. We are extremely dumb. 4 bytes: pyth.herokuapp.com/?code=.fP_&input=5&debug=0

He outgolfed us badly.

.fP_

By 11 bytes, to be exact

5 hours later…

Jim

17:57

That learnt me .f, I didn'y know of it

Mr. Xcoder

18:44

@Jim Nor did I

Noah Cristino

18:56

i here

Mr. Xcoder

@NoahCristino Do you wanna start now?

@NoahCristino ^????

Noah Cristino

yup

Mr. Xcoder

Let's start with the very basics:

Noah Cristino

let me close some tabs first

Mr. Xcoder

I recommend using this interpreter: pyth.herokuapp.com

It has a fancy search bar

Noah Cristino

18:58

Mr. Xcoder

@NoahCristino This is the official docs: pyth.readthedocs.io/en/latest

Noah Cristino

Mr. Xcoder

Now, the first task you ever do in each language: Hello World

Pyth has implicit printing.

Noah Cristino

it's just

"Hello World"

Mr. Xcoder

Just as Jelly

@NoahCristino True

The thing is that you can golf that

Noah Cristino

19:00

how?

Mr. Xcoder

Pyth has automatic closing quotes and brackets at the end of the program

Like: "Hello World

Noah Cristino

I just got that

Mr. Xcoder

This only works with Strings that are at the end of the program.

Noah Cristino

Mr. Xcoder

The same applies for )

Noah Cristino

19:02

kkkkkkkkkkk

Mr. Xcoder

As you call probably tell, Pyth uses prefix notation

That means signs like +, -, /, … are before the things they are operating on

Noah Cristino

yea

Mr. Xcoder

Like 2+2 in Jelly means +2 2. 2*2 in Jelly means *2 2

Noah Cristino

weird

Mr. Xcoder

@NoahCristino It's not werid

Everything is prefix in Pyth

Noah Cristino

19:04

does it need the space?

Mr. Xcoder

@NoahCristino Yes. Otherwise it would interpret it like a single number, 22

Noah Cristino

Mr. Xcoder

You should take note that input is also implicit at the end

Noah Cristino

but that takes up one more byte

Mr. Xcoder

(if it is needed)

Noah Cristino

19:05

Mr. Xcoder

@NoahCristino You will never really add to numerical values.

Noah Cristino

yea

Mr. Xcoder

You have a predefined variable for 10, T. Adding T and 2 only requires 3 bytes: +T2

Noah Cristino

Mr. Xcoder

@NoahCristino I'll leave you some time to read the docs now. Ping me when you finish the first few pages

Noah Cristino

19:07

i already did

give me a challenge

I was reading inbetween messages

Mr. Xcoder

Mini-Question: What is input in Pyth?

the equivalent for input() in Python?

Noah Cristino

one sec

closed interpreter

Mr. Xcoder

Don't close that, it's the most helpful resource

In the search bar, you should filter by Any instead of char.

Noah Cristino

Mr. Xcoder

@NoahCristino Q and w are input. z are String input. E is evaluated input.

Noah Cristino

19:11

oh so Q is all

just like CJam

Mr. Xcoder

@NoahCristino Yeah. You can use w too, but Q is preffered

Noah Cristino

But Q is eval(input())

Mr. Xcoder

Note: Q only reads the very first input, no matter how many times it is called

@NoahCristino Play with Q a bit

Noah Cristino

Mr. Xcoder

pyth.herokuapp.com/?code=%2B2Q%3B%2a2Q&input=5&debug=0

pyth.herokuapp.com/…

Note that the ;s are not needed, just added for clarity

@NoahCristino Want an easy challenge?

Noah Cristino

19:14

Mr. Xcoder

CMC: Given a list, output its sum

Noah Cristino

Mr. Xcoder

Test suite here

Noah Cristino

Mr. Xcoder

@NoahCristino Lowercase s.

Noah Cristino

19:16

that was a joke

jelly

Mr. Xcoder

search with that fancy bar

@NoahCristino How are you doing? :D

Noah Cristino

isn't it just s?

Mr. Xcoder

@NoahCristino It is

Good

Now, let's move on to something a bit harder.

@NoahCristino CMC: Output the maximum element in a list.

*you must not handle empty lists)

[1,2,3,4,5] -> 5

[2,4,3] -> 4

[9,4] -> 9

[1] -> 1

Noah Cristino

ok\

test suite?

Mr. Xcoder

The same as above

8 mins ago, by Mr. Xcoder

Test suite here

@NoahCristino Actually, use this one

Noah Cristino

19:30

nvm no clue what im doing

Mr. Xcoder

@NoahCristino Search for sorted

Noah Cristino

how do I get the biggest element in a list?

S.) should work

Mr. Xcoder

@NoahCristino That's the CMC

@NoahCristino S suffices

Noah Cristino

no it doesn't

I need
[1,2,3,4,5] -> 5

S outputs [1, 2, 3, 4, 5]

Mr. Xcoder

@NoahCristino search for end

@NoahCristino S is sorted

Noah Cristino

19:33

.) gets last element

Mr. Xcoder

@NoahCristino e gets the last one too

eS

@NoahCristino BTW well done!

@NoahCristino S.) does not work

Noah Cristino

.)S?

Mr. Xcoder

@NoahCristino No, .) is not suited here at all

Noah Cristino

but it errors on []

eS errors on []

Mr. Xcoder

@NoahCristino You must not handle it

Noah Cristino

19:35

Mr. Xcoder

> *you must not handle empty lists)

@NoahCristino Wanna take a break until tomorrow? I personally want to chat in TNB now

Noah Cristino

Jim

Hey

Just passing

Noah Cristino

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