Automate the Boring Stuff With Python, Chapter 4 Exercise

Question

I'm newbie and doing Al Sweigar's book at the moment. In chapter 4's exercise, he asks the following,

Say you have a list of lists where each value in the inner lists is a one-character string, like this:

 grid = [['.', '.', '.', '.', '.', '.'],
         ['.', 'O', 'O', '.', '.', '.'],
         ['O', 'O', 'O', 'O', '.', '.'],
         ['O', 'O', 'O', 'O', 'O', '.'],
         ['.', 'O', 'O', 'O', 'O', 'O'],
         ['O', 'O', 'O', 'O', 'O', '.'],
         ['O', 'O', 'O', 'O', '.', '.'],
         ['.', 'O', 'O', '.', '.', '.'],
         ['.', '.', '.', '.', '.', '.']] 

You can think of grid[x][y] as being the character at the x- and y-coordinates of a “picture” drawn with text characters. The (0, 0) origin will be in the upper-left corner, the x-coordinates increase going right, and w the y-coordinates increase going down. Copy the previous grid value, and write code that uses it to print the image.

..OO.OO.. 
.OOOOOOO. 
.OOOOOOO. 
..OOOOO.. 
...OOO... 
....O....

So I have written the code and it does what he asks for but I think its very poorly written and I wanted to ask you how can I improve it. My code,

grid = [['.', '.', '.', '.', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['.', 'O', 'O', 'O', 'O', 'O'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['.', '.', '.', '.', '.', '.']]

newString = ''

for i in range(len(grid)):
    newString += str(grid[i][0])

newString1 = '\n'
for i in range(len(grid)):
    newString1 += str(grid[i][1])

newString2 = '\n'
for i in range(len(grid)):
    newString2 += str(grid[i][2])

newString3 = '\n'
for i in range(len(grid)):
    newString3 += str(grid[i][3])

newString4 = '\n'
for i in range(len(grid)):
    newString4 += str(grid[i][4])

newString5 = '\n'
for i in range(len(grid)):
    newString5 += str(grid[i][5])

print(newString+newString1+newString2+newString3+newString4+newString5)

Output of program:

..OO.OO..
.OOOOOOO.
.OOOOOOO.
..OOOOO..
...OOO...
....O....

Answer 1

    grid = [['.', '.', '.', '.', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['.', 'O', 'O', 'O', 'O', 'O'],
        ['O', 'O', 'O', 'O', 'O', '.'],
        ['O', 'O', 'O', 'O', '.', '.'],
        ['.', 'O', 'O', '.', '.', '.'],
        ['.', '.', '.', '.', '.', '.']]

    for i in range(len(grid[0])):
        print()
        for j in range(len(grid)):
            print(grid[j][i], end='')