WEBVTT 00:00.000 --> 00:12.920 In this video, we will recall Python basics, combining loops and conditionals to create 00:12.920 --> 00:20.400 an interactive game. 00:20.400 --> 00:23.760 Python is a simple yet powerful programming language. 00:23.760 --> 00:28.640 Python syntax is like writing instructions in a clear, simple language. 00:28.640 --> 00:32.640 Do you remember the secret number guessing game we developed where hints helped you find 00:32.640 --> 00:33.640 the right number? 00:33.640 --> 00:35.640 Let's recall that. 00:35.640 --> 00:40.640 Here, we import a library random, which allows the program to pick a secret number between 00:40.640 --> 00:43.480 1 and 20 using the random module. 00:43.480 --> 00:48.840 We use variables to store data, like numbers, words, or lists. 00:48.840 --> 00:53.000 It can be reused and changed, making your programs more flexible. 00:53.000 --> 00:56.440 In Python, four main data types are used. 00:56.440 --> 01:02.000 String stores text inside quotation marks, integer stores the whole numbers, float stores 01:02.000 --> 01:09.160 numbers with decimal points, and Boolean holds values of either true or false. 01:09.160 --> 01:16.160 Now here, secret number is a variable that stores a random number, generated by the function, 01:16.160 --> 01:23.240 random dot rand int, 1 comma 20, which gives a random value between 1 and 20. 01:23.240 --> 01:27.880 It sets a new secret number each time you start the game. 01:27.880 --> 01:31.160 We have given the player five attempts. 01:31.160 --> 01:34.240 Can you guess the variable and the value in this? 01:34.240 --> 01:35.240 Right. 01:35.240 --> 01:39.440 Attempt is a variable and five is the value. 01:39.440 --> 01:46.160 We store the number of attempts in a variable and used input function to let the player make 01:46.160 --> 01:47.160 a guess. 01:47.160 --> 01:52.480 Then, we used print function to give hints and instructions. 01:52.480 --> 01:56.000 After each guess, the program gave feedback. 01:56.000 --> 02:02.360 We used conditional statements, if, else if, and else to check the player's guess. 02:02.360 --> 02:06.520 If the guess matched the secret number, we printed, congratulations. 02:06.520 --> 02:08.320 You have guessed the secret number. 02:08.320 --> 02:14.280 Else if the guess was too high, we printed too high. 02:14.280 --> 02:18.800 Else the guess was too low, we printed too low. 02:18.800 --> 02:22.520 We used a for loop to give the player exactly five chances. 02:22.520 --> 02:26.840 If the guess was right, we ended the game early with a break statement. 02:26.840 --> 02:31.280 And finally, we used in formatted string to display the correct number, if the player 02:31.280 --> 02:33.280 ran out of attempts. 02:33.280 --> 02:38.560 Now, it's time to take these skills to the next level. 02:38.560 --> 02:43.280 Let's learn how can we build this same program using while loop. 02:43.840 --> 02:49.160 First, we will remove this part of for loop and let's continue the program. 02:49.160 --> 02:50.320 Create the loop. 02:50.320 --> 02:52.960 Write the main game logic using a while loop. 02:52.960 --> 03:00.240 While attempts greater than zero, guess equal to int input. 03:00.240 --> 03:03.000 Guess the number between one and twenty. 03:03.000 --> 03:08.480 This keeps the game running until the player guesses the number or runs out of attempts. 03:08.480 --> 03:12.840 The int input function ensures that the guess is treated as a number. 03:12.880 --> 03:14.440 Click the player's guess. 03:14.440 --> 03:20.400 Now, add conditions to check if the guess is correct, too high or too low. 03:20.400 --> 03:28.320 We will add a if condition, if guess equal to secret number. 03:28.320 --> 03:32.120 Print, congratulations. 03:32.120 --> 03:36.160 You have guessed the correct number. 03:36.160 --> 03:38.480 Then add a break statement. 03:38.480 --> 03:41.400 The break statement stops the loop at that moment. 03:41.400 --> 03:47.560 When the player guesses the secret number correctly, there's no need to continue asking for guesses. 03:47.560 --> 03:56.880 We will add an else, if, and else, condition, else, if, guess greater than secret number. 03:56.880 --> 04:03.080 Print, too high, else, print, too low. 04:03.080 --> 04:07.720 After each guess, reduce the number of attempts and show how many are left. 04:07.720 --> 04:11.040 Attempts minus is equal to one. 04:11.880 --> 04:14.000 F, you have attempts. 04:14.000 --> 04:17.200 Attempts left dot backslash n. 04:17.200 --> 04:21.040 If the player uses all their chances, let them know the correct number. 04:21.040 --> 04:23.520 If attempts is equal to zero. 04:23.520 --> 04:29.840 Print, F, sorry, you have run out of attempts. 04:29.840 --> 04:34.520 The correct number was secret number. 04:34.520 --> 04:39.280 It is important to add formatted string, so we get the secret number printed in the console 04:39.280 --> 04:41.760 after all incorrect attempts. 04:41.760 --> 04:48.360 Save the program with the name like numberguessinggame.pi. 04:48.360 --> 04:56.840 Click the Run button and check whether we can find the secret number. 04:56.840 --> 04:58.400 Congratulations. 04:58.400 --> 05:04.920 You have just built a number guessing game using a while loop in Python. 05:04.920 --> 05:08.680 Keep practicing, and soon you'll be creating even more exciting programs.