Magic-Square - Creates a magic square by randomly generating a list until the list happens to be a magic square

Overview

Magic-Square

Creates a magic square by randomly generating a list until the list happens to be a magic square. Done as simply as possible...

Frequently Asked Questions

Why?

  • I wanted to remake a homework assignment I did two years ago, in one line of code

How long did this take you?

  • About an hour [but making this file is only adding to the amount of time wasted]

Does this even work?

  • Of course! TIAS!

How does it work?

  • I'm glad you asked. To be honest, I'm not sure I even know. But I split it up and added comments if that helps.
def is_magic_square(x): 
    """ There might be a more concise way to do this but it works """
    return sum([x[0],x[3],x[6]])==sum([x[1],x[4],x[7]])==sum([x[2],x[5],x[8]])==sum([x[0],x[1],x[2]])==sum([x[3],x[4],x[5]])==sum([x[6],x[7],x[8]])==sum([x[0],x[4],x[8]])==sum([x[2],x[4],x[6]])

#creates an infinite iterator that will always generate a new random list as long as you call x on it
infinite_iterator = (__import__("random").sample([1,2,3,4,5,6,7,8,9],9) for _ in __import__("itertools").repeat(1))

# the final list infinitely iterates as long as the boolean condition holds true 
# `https://stackoverflow.com/questions/2361426/get-the-first-item-from-an-iterable-that-matches-a-condition`
final_square= next(x for x in infinite_iterator if is_magic_square(x))
final_square = map(str, final_square) # just so it prints

# prints it out neatly 
# `https://stackoverflow.com/questions/35903828/how-to-print-3x3-array-in-python`
print("\n".join(map(" ".join, zip(*[iter(final_square)] * 3))))

Are you okay?

:)

Special Thanks

to Alex Martelli and Padraic Cunningham for the two stack overflow answers which made this monstrosity much more concise

Owner
Nick
Hey, welcome to my GitHub page! If you're interested, I accept discord bot commissions.
Nick
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