Sudoku making with base Python

[wep]

Good evening,

i am doing some exercises from the course i am attending and one of them is requiring me to realize with base Python a valid sudoku 4x4 grid.
With base python i mean that we cannot use:
1) external lybraries (only the random lybraries)
2) personal functions (we didn't covered them yet)

I have written an example of code that i put here below.
My code have some problems:
1) It doesnt check if we have same number in same column
2) It doesnt check if we have same number in same 2x2 grid
3) I tried to fill the void spaces with "" using multiple while. I think the same output can be done using one for and one while?

Thanks for the help

import random

sudoku = list()
number = list()
difficulty = 7 # max number of elements in sudoku

# Generating a 4x4 table with random number between 1 and 4
for row in range (4):
  column = list()
  for i in range(4):
    column.append(random.randint(1,4))

# Removing duplicates and counting number of elements per row
  sudoku.append(list(set(column)))
  number.append(len(sudoku[row]))

# Counting the total number of elements
elements = sum(number)

# Removing last element from random row until we reach the desired number of elements
while elements > difficulty:
  sudoku[random.randint(1,3)].pop()
  elements = elements - 1

print(sudoku)

# Adding spaces where we have no elements

row_0 = len(sudoku[0])
row_1 = len(sudoku[1])
row_2 = len(sudoku[2])
row_3 = len(sudoku[3])

while row_0 < 4:
  sudoku[0].append("")
  row_0 = len(sudoku[0])

while row_1 < 4:
  sudoku[1].append("")
  row_1 = len(sudoku[1])

while row_2 < 4:
  sudoku[2].append("")
  row_2 = len(sudoku[2])

while row_3 < 4:
  sudoku[3].append("")
  row_3 = len(sudoku[3])

print(sudoku)

Larz60+ write Oct-17-2023, 05:49 PM:
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