PLEASE CODE IN PYTHON

Part II: drop piece(board, col num, player)

This function drops a piece into a column of the board. If player is 1, then the function drops an X down the column. Otherwise, if player is 2, then the function drops an O down the column. The piece falls until it lands in the lowest unoccupied slot in that column, and the function returns the number of the row that the piece landed in (where the bottommost row is row #1). Note that the returned row number should be in the range [1, board. num rows], not [0, board. num rows-1]

Note that the value of col num should be in the range [1, board. num cols]. If not, the function returns -1. If the column is completely filled with pieces, the function returns -1.

In cases whether an invalid move is attempted, the contents of board must be left unchanged.

Example: Before and after drop piece(board, 4, 1):

...... : ......

...... : ......

...... : ......

...... : ......

...... : ...X..

..OO.. : ..OO..

XXXOOX : XXXOOX

drop piece(board, 4, 1) for this example will return 3 because the piece landed in row #3

PROVIDED BELOW IS THE BOARD CLASS

# The Board class represents the game board. # From the player's perspective, the rows are numbered 1 through num_rows, # and the columns are numbered 1 through num_cols. Internally, however # the actual slots that hold the pieces are indexed using 0 through num_rows-1 # and 0 through num_cols-1. # DO NOT MODIFY THE Board CLASS IN ANY WAY! class Board: def __init__(self, num_rows, num_cols): self._num_rows = num_rows self._num_cols = num_cols self._slots = [] for i in range(0, num_rows): self._slots.append([]) for j in range(0, num_cols): self._slots[-1].append('.') # DO NOT MODIFY THE Board CLASS IN ANY WAY! # Displays the board. Note that slot [0][0] is in the bottom-left corner of the board. # [num_rows-1][num_cols-1] is the position of the slot in the upper-right corner def display_board(board): for i in range(board._num_rows-1, -1, -1): row = ''.join(board._slots[i]) print(row)