no_list_comprehension_please.py

print("Before:")
A = [[ '#' ' ' [(col + cell) % 2] for col in range(5)] for cell in range(5)]
print(A)

print("After:")
A = []
for col in range(5):
    A.append([])
    for cell in range(5):
        check = (col + cell) % 2
        if check == 0:
            A[col].append('#')
        elif check == 1:
            A[col].append(' ')

print(A)

# Before:
# [['#', ' ', '#', ' ', '#'], [' ', '#', ' ', '#', ' '], ['#', ' ', '#', ' ', '#'], [' ', '#', ' ', '#', ' '], ['#', ' ', '#', ' ', '#']]
#
# After:
# [['#', ' ', '#', ' ', '#'], [' ', '#', ' ', '#', ' '], ['#', ' ', '#', ' ', '#'], [' ', '#', ' ', '#', ' '], ['#', ' ', '#', ' ', '#']]