Pseudo GUI

picture = [
    [0,0,0,1,0,0,0],
    [0,0,1,1,1,0,0],
    [0,1,1,1,1,1,0],
    [1,1,1,1,1,1,1],
    [0,0,0,1,0,0,0],
    [0,0,0,1,0,0,0]
]

for line in picture:
    for pixel in line:
        if pixel: # Using truthy principle
            print("#", end="")
        else:
            print(" ", end="")
    print() # Start printing in new line, for next line of picture