from ipythonblocks import BlockGrid

grid = BlockGrid(10, 10, fill=(123, 234, 123))
grid

WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)

grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(10):
    grid[9, i] = RED
for i in range(10):
    grid[i, 9] = WHITE

grid

# Note -- you could do this in a single loop pretty easily:
grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(10):
    grid[9, i] = RED
    grid[i, 9] = WHITE

grid

grid = BlockGrid(10, 10, fill=(123, 234, 123))
grid[0, 0] = WHITE
grid[2, 2] = WHITE
grid[4, 4] = WHITE
grid[6, 6] = WHITE
grid[8, 8] = WHITE
grid

# one way to do this is to use an if statement:
grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(10):
    if i % 2 == 0: # if even
        grid[i, i] = WHITE

grid

# you can also do this by multiplying by 2:
grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(5):  # <-- only go up to 5
    j = i*2
    grid[j, j] = WHITE

grid

# or, if you go read up on the range function, you can have the range function do the counting for you!
grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(0, 10, 2):  # <-- step by 2
    grid[i, i] = WHITE

grid

grid = BlockGrid(10, 10, fill=(123, 234, 123))
grid[:,0] = (0, 0, 0)
grid[:,1] = (10, 0, 0)
grid[:,2] = (20, 0, 0)
grid[:,3] = (30, 0, 0)
grid[:,4] = (40, 0, 0)
grid[:,5] = (50, 0, 0)
grid[:,6] = (60, 0, 0)
grid[:,7] = (70, 0, 0)
grid[:,8] = (80, 0, 0)
grid[:,9] = (90, 0, 0)
grid

# probably the simplest way to do it is like so:
grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(10):
    grid[i, :] = (i*10, 0, 0)
grid

# but, there are many, many ways to skin a cat:
grid = BlockGrid(10, 10, fill=(123, 234, 123))

for i in range(0, 100, 10):
    grid[i / 10, :] = (i, 0, 0)
grid