letter_pi_ascii

def letter_pi(size):
    for row in range(1, size+1):
        for collumn in range(1, size+1):
            if collumn == 2 or collumn == size-1:
                print("#", end = "")
            elif row == 1 and collumn != size:
                print("#",end = "")
            elif row == size and collumn == size:
                print("#", end="")
            else:
                print(".", end="")
        print()