/Python/Generate valid sudoku board python

Generate valid sudoku board python

base  = 3
side  = base*base

# pattern for a baseline valid solution
def pattern(r,c): return (base*(r%base)+r//base+c)%side

# randomize rows, columns and numbers (of valid base pattern)
from random import sample
def shuffle(s): return sample(s,len(s)) 
rBase = range(base) 
rows  = [ g*base + r for g in shuffle(rBase) for r in shuffle(rBase) ] 
cols  = [ g*base + c for g in shuffle(rBase) for c in shuffle(rBase) ]
nums  = shuffle(range(1,base*base+1))

# produce board using randomized baseline pattern
board = [ [nums[pattern(r,c)] for c in cols] for r in rows ]

for line in board: print(line)

[6, 2, 5, 8, 4, 3, 7, 9, 1]
[7, 9, 1, 2, 6, 5, 4, 8, 3]
[4, 8, 3, 9, 7, 1, 6, 2, 5]
[8, 1, 4, 5, 9, 7, 2, 3, 6]
[2, 3, 6, 1, 8, 4, 9, 5, 7]
[9, 5, 7, 3, 2, 6, 8, 1, 4]
[5, 6, 9, 4, 3, 2, 1, 7, 8]
[3, 4, 2, 7, 1, 8, 5, 6, 9]
[1, 7, 8, 6, 5, 9, 3, 4, 2]

Source: stackoverflow.com

Similar codes

0 vote157 views1 answer
Tensor.expand_as
Python
10 votes129 views5 answers
Pandas number of columns
Python
2 votes157 views1 answer
Pass variable in subprocess run python
Python
1 vote167 views1 answer
Django queryset group by count
Python Django
2 votes146 views3 answers
To_frame python
Python
0 vote171 views1 answer
Python a, b =
Python
0 vote131 views1 answer
How to convert integer to hex signed 2's complement in python
Python
1 vote130 views1 answer
How to delete role discord py rewrite
Python
0 vote156 views1 answer
Numpy substract subsequent elements
Python
0 vote136 views1 answer
Improt kmean
Python