(By Phoomparin) Some practice questions that asked you to print a wall -- in Python.

phoomparin.py

#!/usr/bin/python3
import sys
import math

# Figure out the width and height of our grid.
def getGridSize(boxes):
    # For the walls (#)
    # Exclude the center, times two for both sides, and add the center back.
    walls = ((boxes - 1) * 2) + 1
    return walls + (walls - 1)

def isBetween(min, max, row, col):
    if (row >= min and row <= max) and (col >= min and col <= max):
        return True
    return False

# Figure out if this block should be a wall (#) or not (.)
def isWall(row, column, boxes):
    grid = getGridSize(boxes)
    middle = math.ceil(grid / 2) - 1

    if (row == 1 or row == grid - 2) and (column > 0 and column < grid - 1):
        # Row Walls
        return False
    elif (row > 1 and row < grid - 2) and (column == 1 or column == grid - 2):
        # Column Walls
        return False
    elif (row >= 3 and row <= grid - 4) and (column >= 3 and column <= grid - 4):
        if (row == middle and column == middle):
            return True
        # Loops through the minimum and maximum possible indexes
        for i in reversed(range(4, 2 * (boxes - 1))):
            # If it's in between the box range
            if isBetween(i, grid - (i + 1), row, column):
                # If it's an odd number, it's not a wall.
                if (i % 2 != 0):
                    return False
                # If it's an even number, make it a wall!
                elif (i % 2 == 0):
                    return True
        return False
    return True

def renderBox(boxes):
    grids = getGridSize(boxes)
    print(boxes, "boxes,", grids, "grids")

    for row in range(0, grids):
        for column in range(0, grids):
            if isWall(row, column, boxes):
                print("#", end = "")
            else:
                print(".", end = "")
        print("") # Insert newline for the new rows

renderBox(int(sys.argv[1]))