Simple Function Problem, please help

[Larz60+]

I would do this completely differently:

import copy

num_rows = 6
num_cols = 5
board = [ ]

def make_board(num_rows, num_cols):
    newrow = [ ]
    for row in range(num_rows):
        for col in range(num_cols):
            newrow.append(0)
        board.append(newrow)
        newrow = [ ]

def drawboard():
    border = ('----' * num_cols) + '-'
    for row in range(num_rows):
        print(border)
        for col in range(num_cols):
            # print(f'row: {row}, col: {col}')
            if board[row][col] == 1:
                cell = '| x '
            else:
                cell = '|   '
            print(cell, end='')
        print('|')
    print(border)

def set_cell(row, col):
    # one based, to make zero based, use:
    # board[row][col] = 1
    board[row-1][col-1] = 1

def clear_cell(row, col):
    # one based, to make zero based, use:
    # board[row][col] = 1
    board[row-1][col-1] = 0

def columncheck(row):
    sums = 0
    for col in range(num_cols):
        sums += board[row-1][col]
    return sums == num_cols

def show_results(row):
    drawboard()
    if columncheck(row):
        print('row {} is full\n'.format(row))
    else:
        print('row {} is not full\n'.format(row))

def test_it():
    make_board(num_rows, num_cols)
    # Set first 4 cells of row 6
    row = 6
    for col in range(4):
        set_cell(row, col+1)
    # Now set last cell
    show_results(row)
    set_cell(row, 5)
    show_results(row)

if __name__ == '__main__':
    test_it()

run results:

Output:
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
| x | x | x | x |   |
---------------------
row 6 is not full

---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
|   |   |   |   |   |
---------------------
| x | x | x | x | x |
---------------------
row 6 is full