import random

a = 250 # set this number to your horizontal width
b = 400 # set this number to your vertical width

horizontalSeed = [1]
while len(horizontalSeed) !=  a:  # creates a random list a tiles long, no repeating tiles, tiles 1 and 3 twice as likely
    x = [random.randint(1,10)]
    if x[0] == 2:
        x[0] = 1
    if x[0] == 4:
        x[0] = 3
    if horizontalSeed[len(horizontalSeed)-1] != x[0]:
        horizontalSeed = horizontalSeed + x
totalList = [horizontalSeed]

verticalSeed = [1] #creates a vertical list with height b
while len(verticalSeed) != b:
    y = [random.randint(1,10)]
    if y[0] == 2:
        y[0] = 1
    if y[0] == 4:
        y[0] = 3
    if verticalSeed[len(verticalSeed)-1] != y[0]:
        verticalSeed = verticalSeed + y
while len(totalList) != b: # creates a big list of all the tiles along the top and left sides
    z = [verticalSeed[len(totalList)]]
    totalList = totalList + [z]

x = 1

while x < a: # goes from top to bottom then left to right, checking the tiles on top and to the left, adding one in if it is different
    y = 1
    while y < b:
        z = random.randint(1,10)
        if z == 2:
            z = 1
        if z == 4:
            z = 3
        if (z != totalList[y][x-1]) and (z != totalList[y-1][x]):
            totalList[y] = totalList[y] + [z]
            y = y + 1
    x = x + 1
x = 0
while x != a-1: # prints the list of tiles, one row at a time.
    print(totalList[x])
    x = x+ 1