Day_ 19 2D Lists.py

## Day_ 19 2D Lists in Python .........................................................................................

# matrix = [
#     [1, 2, 3],
#     [4, 5, 6],
#     [7, 8, 9]
# ]

# print(matrix[0][1])

# # changing values
# matrix[0][1] = 20
# print(matrix[0][1])

# # chaging all values of all the indexes
# for row in matrix:
#     for item in row:
#         print(item)