Questions tagged [python]

This challenge is related to the Python language. Note that challenges that require the answers to be in a specific language are generally discouraged.

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4 votes
3 answers
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Is there a shortest code to format string

Code Golf Challenge Given a string of 10 characters: 'abcdefghij' I want to format it in this pattern and print it in the console in a minimum number of characters: ...
Karine Bauch's user avatar
18 votes
17 answers
3k views

Adversarial Iterated Prisoner's Dilemma

In this challenge, you will play the iterated Prisoner's Dilemma, but with a twist: There's also an adversary trying to mess you up! The Prisoner's dilemma is a scenario in game theory where there are ...
isaacg's user avatar
  • 42k
8 votes
1 answer
381 views

Self-referencing tuple in python

Goal: create a self-referencing tuple satisfying x == (x,) in any version of Python. Standard libraries, matplotlib, numpy, pandas only. Answers meeting this extra ...
Shuri2060's user avatar
  • 191
5 votes
3 answers
332 views

Valid python function invocation signatures

Background In Python, function arguments are defined within the parentheses following the function name in the function definition. There are different ways to present function arguments, and they can ...
Mardoxx's user avatar
  • 181
-2 votes
1 answer
444 views

What is the ABSOLOUTE shortest way to write this code?

So I got kinda bored and was wondering if it was possible to make this code shorter without modifying anything except a file named coin.py... ...
Eric's user avatar
  • 107
18 votes
19 answers
5k views

The Dating Game / Secretary Problem

The bots are looking for love. Can you help them? The rules The goal of this game is find the bot you have the highest compatibility with. However, robots, who are inexperienced at dating are unable ...
mousetail's user avatar
  • 11.8k
5 votes
2 answers
376 views

Shortening this Code to process nested tuple even further without the use of max()

I have the code: ...
Dark Programmer's user avatar
26 votes
15 answers
2k views

Is this series of quotes valid Python?

Python string parsing has quite a few edge cases. This is a string: "a" Putting 2 strings immediately after each other implicitly concatenates them, so ...
mousetail's user avatar
  • 11.8k
8 votes
2 answers
599 views

Inverting string-based binary number in one line in Python

I want to read two strings on separate lines, each string the same length and containing only 0's and 1's, and determine if the first is the one's complement of the second. How succinctly can this be ...
Fixee's user avatar
  • 181
4 votes
3 answers
1k views

Python: can I shorten this code further for checking substrings

So the golf question was like this: You are given a number T and then a total of T number of 17-character strings. For each of ...
chnmasta05's user avatar
13 votes
16 answers
2k views

Speed up, slowpoke!

In this king-of-the-hill challenge, you will program a bot, consisting of a python function of the form def BOTNAME(info, me, round): pass # ... main body ...
Qaziquza's user avatar
  • 1,623
-5 votes
2 answers
262 views

King of the Hill: Greed Control [duplicate]

King of the Hill: Greed Control What is Greed Control Greed control is a multiplayer round-based game in which in every round, a player bet a number inside a ...
Number Basher's user avatar
7 votes
2 answers
285 views

How to shorten Python code involving the sum of reciprocals?

I have a coding problem that goes like this: Given a positive integer \$N\$, return a list of all possible pairs of positive integers \$(x,y)\$ such that $$\frac1x+\frac1y=\frac1N$$ I already solved ...
Aiden Chow's user avatar
  • 12.7k
-9 votes
1 answer
344 views

The right way to return [[0, 0, 0], [0, 1, 0], [0, 0, 0]] [closed]

Here is the program to return [[0, 0, 0], [0, 1, 0], [0, 0, 0]] [[0]*3,[0,1,0],[0]*3] Try it online! Can you shorten this code?...
Fmbalbuena's user avatar
  • 3,407
10 votes
2 answers
868 views

Can I shorten this Python code for simulating a car driving around

I am trying to write a solution to the following problem using as few characters as possible (to meme my friend and introduce him to golfing). Can any improvements be done to my code? So the problem ...
chnmasta05's user avatar
4 votes
3 answers
692 views

How to shorten the Python code? Part II

Code Python 3, 245 bytes ...
Fmbalbuena's user avatar
  • 3,407
9 votes
4 answers
3k views

How to shorten the python code?

I'm writing a program that takes a number from input (call it x), loops from 0 to (x - 1) (let's call our iterator y) and prints \$y^x+x\$ for each y. After the loop, it then prints "SUM: N" ...
Fmbalbuena's user avatar
  • 3,407
20 votes
1 answer
632 views

How to solve the LCM in 50 bytes of Python

I've recently stumbled upon a Russian site called acmp.ru, in which one of the tasks, HOK, asks us to find the LCM of two positive integers. The full statement, translated to English is as follows: ...
dingledooper's user avatar
  • 22.3k
6 votes
2 answers
417 views

Pushing the limits to make a piece of code solving the K-Goodness String problem shorter

I am trying to push my limits of making a python code as short as possible. I left the readability part way behind. I was attempting the K-Goodness String problem from Round A of Google Kick Start ...
Ishaan Kapoor's user avatar
-2 votes
1 answer
330 views

Shortest way to convert a float to an int [closed]

I'm not really sure if this is the right place to ask this. Now, I know I can convert a float to an int with int, but is there some shorter way?
Alan Bagel's user avatar
  • 3,443
4 votes
2 answers
1k views

Write an infinitely nested generator comprehension

The goal is to create a generator generator [...] generator generator comprehension. The generator must be created via generator comprehension. The following expression must be valid for any number ...
DivideByZero's user avatar
7 votes
4 answers
1k views

Bigram frequencies in text

Introduction This challenge is about producing a code to count the frequency of bigrams in a text. A bigram is two consecutive letters in a text. For instance 'aabbcd' contains the bigrams aa, ab, bb, ...
willmaths's user avatar
  • 179
7 votes
2 answers
3k views

How to ignore first user input in Python 3

I have 2 inputs: 1 single number and some numbers separated by whitespace: 1 1 2 3 4 5 I want to loop over the second input, and I don't need the first input. I ...
Basto's user avatar
  • 553
5 votes
1 answer
254 views

Tips on golfing this Python program to generate a palindrome from a string

I wrote this function in 48 bytes and I wonder, is there any way to write this code 2 characters shorter? p=lambda n,c:(n*c)[:n//2]+(n*c)[:n//2+n%2][::-1] The ...
Diana Andrei's user avatar
8 votes
6 answers
599 views

KotH - Floating Point Prisoners Dilemma

Background So, nowadays the popular Prisoner's Dilemma variant is the Prisoner's Trilemma, where there are three options. I can easily see that being increased, so I figured Why settle for three ...
4D4850's user avatar
  • 189
12 votes
16 answers
2k views

Random Prisoner's Trilemma - Python 3 KOTH

The Prisoner's Dilemma, but with 3 choices, and the payoffs are random! Each round, your bot recieves a 3x3 grid and chooses a row to play. The grid might be this: ...
Spitemaster's user avatar
  • 2,125
6 votes
6 answers
758 views

Let's play Judgement!

In this king-of-the-hill challenge, you will be making a python 3 bot to play the card game judgement! Sandbox Rules Judgement is a hand based game similar to games like rummy. In each round, 7 cards ...
Rushabh Mehta's user avatar
22 votes
9 answers
3k views

How can this code be more "golfed"?

I'm not sure if this is the right place to ask, but I found this similar question so I'll go ahead. I'm very new to code golfing, so keep your smothered laughs and throw-up emoji's to yourselves ...
Have a nice day's user avatar
8 votes
1 answer
378 views

I'm Jelly of Python (Robbers)

What does "jelly" mean in the title?. Cop's thread Robbers, you are to choose an uncracked Cop answer, and attempt to find a Jelly program which is: shorter than the Cop's answer solves the ...
caird coinheringaahin g's user avatar
12 votes
3 answers
1k views

I'm Jelly of Python (Cops)

What does "jelly" mean in the title?. Robber's thread Jelly has an "Evaluate the argument as Python 3" atom, ŒV which takes a string as an ...
caird coinheringaahin g's user avatar
16 votes
17 answers
1k views

Liars and Guessers

Github You have probably played, and may even have written a program to play, a simple number guessing game. If so, this probably looks familiar: ...
Miriam's user avatar
  • 843
-3 votes
1 answer
232 views

Python Prime Problem [duplicate]

Your challenge is to write a Python program to print all the primes (separated by whitespace) less than a given integer N with an asterisk (...
user101295's user avatar
-7 votes
1 answer
182 views

No. Of Factors Does the Number Have [duplicate]

Create a function which takes in a input integer and then returns the number of factors it has, like if you pass 25 then it will return ...
Smilecat's user avatar
  • 155
2 votes
0 answers
211 views

Using subscription for the iteration variable in Python for loop [closed]

I just realized that Python allows more than names as for loop iteration variables: for a[i] in sequence: pass The real fun ...
Aristide's user avatar
  • 129
3 votes
2 answers
528 views

Remove duplicates from list and order it by count? (python 3)

How do I remove all duplicates from list and order it based on count? ...
12944qwerty's user avatar
42 votes
17 answers
6k views

Tips for restricted source in Python

Just like code-golf, restricted-source pushes one to exploit quirks and hidden features of the Python language. We already have a place to collect all these tips for code-golf, those for restricted-...
Wheat Wizard's user avatar
  • 96.5k
1 vote
2 answers
777 views

Shortest Python 3 for sum of arithmetic progression

Input: from STDIN number of vertices in Graph \$2 \leq N \leq 100\$. Rules: [Code size] = max ([code length without spaces, tabs and newlines], [total code length divided by 4]) Math formulation: In ...
Evgeny's user avatar
  • 323
4 votes
2 answers
1k views

Shortest python3 code for: Find the difference between a number and a power of two not exceeding a given number

So, this is a task from one very popular educational site in Russia: https://acmp.ru/index.asp?main=task&id_task=786&ins=1 Mathematically, you need to find the power of two not exceeding the ...
Evgeny's user avatar
  • 323
16 votes
8 answers
1k views

Omit needless spaces for me

A great Python golfing tip is to omit needless spaces. But if you are like me, you don't always have the time to search for which spaces to remove. If only there was a way to speed up the process... ...
dingledooper's user avatar
  • 22.3k
12 votes
3 answers
2k views

Intersection of circles – How can I reduce this golf code to 127 bytes?

I started a CodeWars kata in Python, just two days ago, related to code golf. Task: Given two congruent circles a and b of radius r, return the area of their intersection rounded down to the nearest ...
Leo oeL's user avatar
  • 123
4 votes
2 answers
3k views

Shortest Solution in Python 3 for Caught Speeding - CodingBat

I am trying to find the shortest code in python 3, to solve this problem: You are driving a little too fast, and a police officer stops you. Write code to take two integer inputs, first one ...
Sayandip Dutta's user avatar
4 votes
1 answer
670 views

From text to ascii art from CodinGame practice puzzle

On CodingGame, there is a Puzzle that ask to write words with ascii art. I solve the puzzle then tried to golf it. What improvement can I do on it? ...
Dorian Turba's user avatar
11 votes
3 answers
628 views

Decode ascii and reversed words sentence

In a challenge of CodingGame, there is a challenge that ask you to decode a string composed by reversed words ('Hello world' > 'olleH dlrow') then each characters converted into ascii value separeted ...
Dorian Turba's user avatar
15 votes
12 answers
1k views

The Celestial Bureaucracy KoTH

In Imperial China, ranks in society were not decided by birth or wealth, but by a person's ability to excel in the Imperial Examinations. The Jade Emperor, divine ruler of the Heavens, has called for ...
AlienAtSystem's user avatar
7 votes
2 answers
979 views

Farkle Fest 2k19: An AI dice game tournament

Farkle Fest 2k19 In this challenge, we will be playing the semi-popular dice game Farkle. Farkle is a dice game that has players selecting to save dice or risk rerolling the die for more points to ...
Tyler Barron's user avatar
0 votes
7 answers
656 views

Shortest way to get a TypeError

It's simple, simply write the shortest code to raise a TypeError. In Python you can do: raise TypeError However it should be ...
U13-Forward's user avatar
  • 2,001
9 votes
1 answer
918 views

Convert a string containing integers to list of integers

What is the shortest way to convert a string containing integers separated by spaces to a list of integers? input : "-3 1 5 8 10" output : [-3, 1, 5, 8, 10] I regularly face this situation and I ...
Nelson G.'s user avatar
  • 347
27 votes
13 answers
2k views

Adventurers in the Ruins

Test Driver • Challenge Discussion • Submit Adventurer (Image Source) Several rival adventurers are raiding the ruins for treasure, but they can only carry so much at a time and have their ...
Beefster's user avatar
  • 9,891
5 votes
3 answers
2k views

A nasty little memory leak

Below Python code generates memory leak. Challenge: Fix the memory leak with minimal changes to the code as measured by Levenshtein distance to the original code. You may only change the code before ...
Shital Shah's user avatar
0 votes
1 answer
336 views

Python code to produce C++14 hex integer literal with ticks

tl;dr? See bottom for The Competition Integer literals While programming, the 64-bit hexadecimal literal 0x123456789abcdefL is difficult to gauge the size of. I ...
John Burger's user avatar