Battleships.py

#Random module for randomly accepting the values
# 'X' indicates the ships hit
# '-' indicates the hits missed
from random import randint

Hidden_Pattern = [[' ']*8 for x in range(8)]
Guess_Pattern = [[' ']*8 for x in range(8)]

let_to_num = {'A':0,'B':1,'C':2,'D':3,'E':4,'F':5,'G':6,'H':7}

def print_board(board):
    print('  A B C D E F G H')
    print('  ***************')
    row_num = 1
    for row in board:
        print("%d¦%s¦" % (row_num, "¦".join(row)))
        row_num+=1

def get_ship_location():
    # enter the row number between 1 to 8
    row = input("Please enter a ship row 1-8: ").upper()
    while row not in '01234567':
        print("Please enter a valid row ")
        row = input("Please enter a ship row 1-8: ")
    #enter the ship column from A to H
    column = input("Please enter a ship column A-H: ").upper()
    while column not in 'ABCDEFGH':
        print("Please enter a valid column")
        column = input("Please enter a ship column A-H: ")
    return int(row)-1,let_to_num[column]

#function that creates the ships
def create_ships(board):
    for ship in range(6):
        ship_r, ship_cl=randint(0,7), randint(0,7)
        while board[ship_r][ship_cl] == 'X':
            ship_r, ship_cl = randint(0,7), randint(0,7)
        board[ship_r][ship_cl] = 'X'


def count_hit_ships(board):
    count = 0
    for row in board:
        for column in row:
            if column == 'X':
                count+=1
    return count

create_ships(Hidden_Pattern)
#print_board(Hidden_Pattern)
turns = 10
while turns > 0:
    print("Welcome to Battleship")
    print_board(Guess_Pattern)
    row,column = get_ship_location()
    if Guess_Pattern[row][column] == '-':
        print("You already guessed that!")
    elif Hidden_Pattern[row][column] == 'X':
        print("Congratulations you have hit the battleship!")
        Guess_Pattern[row][column] = 'X'
        turns-=1
    else:
        print("Sorry you missed")
        Guess_Pattern[row][column] = '-'
        turns-=1
    if count_hit_ships(Guess_Pattern) == 5:
        print("Congratulations you have sunk all the battleships!")
        break
    print("You have " + str(turns) + " turns remaining")
    if turns == 0:
        print("Game Over!")
        break