How can I arrange my grid into a variable?-CodePudding

So I wrote a code that yields a grid with the help of some helpful stackoverflow users, and here it is..

import random
import string

for x in range(4):
    for y in range(4):
        print( '[' random.choice(string.ascii_letters) ']',end='' )
    print()

Now I want to store the grid in a variable x. I tried doing so like this..

import random
import string

for x in range(4):
    for y in range(4):
        x = print( '[' random.choice(string.ascii_letters) ']',end='' )
    print(x)

but the output yields

[P][y][l][V]None
[c][U][f][m]None
[j][s][x][c]None
[G][v][R][X]None

How can I make the output only print out the letters without 'None' at the end of each line AS WELL AS store the grid in variable x?

CodePudding user response：

print() just prints its arguments, it doesn't return the string that it printed. So you're setting x to None.

Don't print the strings, concatenate them onto a variable.

import random
import string

result = ''

for x in range(4):
    for y in range(4):
        result  = f'[{random.choice(string.ascii_letters)}]'
    result  = '\n'

print(result)

CodePudding user response：

Check this out. Maybe using a numpy grid helps.

import string
import random
import numpy as np

grid = np.zeros((4,4), dtype=str)
for i in range(4):
    for j in range(4):
        grid[i,j] = random.choice(string.ascii_letters)
print(grid)