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.
133
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I challenge you to write a decorator which flattens inputs, accepts strings, and rounds floats to integers within machine epsilon [closed]
There is an ancient exercise which used to be given to students to write a recursive function named pow which calculates things such as ...
5
votes
2
answers
317
views
Shortening this Code to process nested tuple even further without the use of max()
I have the code:
...
- 153
26
votes
15
answers
2k
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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 ...
- 8,625
7
votes
2
answers
566
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 ...
- 171
4
votes
3
answers
999
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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 ...
- 143
12
votes
15
answers
2k
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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
...
- 1,533
-4
votes
2
answers
238
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 ...
- 1,532
7
votes
2
answers
266
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 ...
- 11.3k
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votes
1
answer
327
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?...
- 2,871
10
votes
2
answers
841
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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 ...
- 143
4
votes
3
answers
642
views
9
votes
4
answers
3k
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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" ...
- 2,871
20
votes
1
answer
570
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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:
...
- 20.4k
6
votes
2
answers
409
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 ...
- 161
-1
votes
1
answer
266
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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?
- 3,199
4
votes
2
answers
978
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 ...
- 163
6
votes
2
answers
853
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, ...
- 169
7
votes
2
answers
2k
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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 ...
- 543
5
votes
1
answer
229
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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 ...
- 51
7
votes
4
answers
454
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 ...
- 179
12
votes
16
answers
2k
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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:
...
- 2,025
6
votes
6
answers
717
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 ...
- 2,441
22
votes
9
answers
3k
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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 ...
- 323
8
votes
1
answer
356
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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 ...
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12
votes
3
answers
1k
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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 ...
- 48.4k
16
votes
17
answers
1k
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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:
...
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votes
1
answer
220
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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 (...
- 455
-6
votes
1
answer
175
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 ...
- 157
2
votes
0
answers
204
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 ...
- 129
3
votes
2
answers
456
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?
...
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42
votes
17
answers
6k
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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-...
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1
vote
2
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760
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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 ...
- 323
4
votes
2
answers
1k
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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 ...
- 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...
...
- 20.4k
12
votes
3
answers
2k
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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 ...
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votes
2
answers
3k
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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 ...
- 151
4
votes
1
answer
595
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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?
...
- 283
11
votes
3
answers
559
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 ...
- 283
15
votes
12
answers
1k
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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 ...
- 548
7
votes
2
answers
929
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 ...
- 301
-1
votes
7
answers
653
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 ...
- 1,961
9
votes
1
answer
801
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 ...
- 347
27
votes
13
answers
2k
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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 ...
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5
votes
3
answers
2k
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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 ...
- 191
0
votes
1
answer
325
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 ...
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57
votes
49
answers
11k
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A game of dice, but avoid number 6
Tournament over!
The tournament is now over! The final simulation was run during the night, a total of \$3*10^8\$ games. The winner is Christian Sievers with his bot OptFor2X. Christian Sievers also ...
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20
votes
19
answers
5k
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Iterated Prisoner's Trilemma
CHALLENGE STATUS: OPEN
Comment, open a PR, or otherwise yell at me if I'm missing your bot.
Prisoner's dilemma ... with three choices. Crazy, huh?
Here's our payoff matrix. Player A on the left, B ...
- 611
55
votes
37
answers
10k
views
Robot Roulette: High stakes robot gambling
Final Standings
+----------------------------------+---------+---------+---------+----------------------------+
| Name | Score | WinRate | TieRate | Elimination ...
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votes
4
answers
678
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Russian BS - Submissions accepted until October 13th
The ChatRoom is here
I love playing the card game BS, but sometimes, it just doesn't have enough oomph for my short attention span. Instead, let's play some Russian BS.
Rules
Here is a quick guide ...
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15
votes
4
answers
2k
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Get the lowest possible pylint score within 128 bytes of python
pylint has no lower bound on the scores it will give your code. It uses the following metric to score code, with the maximum score being 10:
...
- 161