Change single element in 2D list changes every 1D element

[AceScottie]

I have a 2D list of 10x10 0s' (user can change the amount from command line)
list = [
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
]
i want to change list[x][y] to a 1
list[x][y] = 1
however the output i get is :
list = [
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]
]

code:

#global vars
maze =
wright_permission = True
#----
def set_pixel(x, y): # Changes the element in x row and y column to 1
    global maze # loads the global object
    global wright_permission
    while True:
        if wright_permission: # for quick threading later
            wright_permission = False
            maze[x][y] = 1
            wright_permission = True
            break

def create_maze(w, h): # creates a 2D list of 0 from the 2 numbers given in the command line.
    mazesec = [0] * w
    mazearr = [mazesec] * h
    return mazearr 

def main(w, h, startx, starty):
    global maze # loads a global object
    maze = create_maze(w, h) # sets the global object to an 2D list of 0s
    for i in range(0, len(maze)):
        print maze
    set_pixel(startx, starty) # sets a single random element in the list to a 1
    print("created new maze!")
    for j in range(0, len(maze)):
        print maze[j]

if __name__ == "__main__":
    try:
        w = int(sys.argv[1])
        h = int(sys.argv[2])
    except:
        print("Error: use 'python maze.py int-width int-height' replacing int-width and int-height with a number for width and height of the maze")
    main(w, h, random.randint(1, w-1), random.randint(1, h-1))