Practice Python

Beginner Python exercises

08 January 2017

Guess Letters Solutions

Exercise 31

This exercise is Part 2 of 3 of the Hangman exercise series. The other exercises are: Part 1 and Part 3.

Let’s continue building Hangman. In the game of Hangman, a clue word is given by the program that the player has to guess, letter by letter. The player guesses one letter at a time until the entire word has been guessed. (In the actual game, the player can only guess 6 letters incorrectly before losing).

Let’s say the word the player has to guess is “EVAPORATE”. For this exercise, write the logic that asks a player to guess a letter and displays letters in the clue word that were guessed correctly. For now, let the player guess an infinite number of times until they get the entire word. As a bonus, keep track of the letters the player guessed and display a different message if the player tries to guess that letter again. Remember to stop the game when all the letters have been guessed correctly! Don’t worry about choosing a word randomly or keeping track of the number of guesses the player has remaining - we will deal with those in a future exercise.

An example interaction can look like this:

>>> Welcome to Hangman!
_ _ _ _ _ _ _ _ _
>>> Guess your letter: S
Incorrect!
>>> Guess your letter: E
E _ _ _ _ _ _ _ E
...

And so on, until the player gets the word.

Sample solution

To write the logic of our Hangman game, we need a few components:

  1. A way to store the word in play
  2. Keep track of which letters in the word have already been guessed
  3. Ask the user for a letter and display the results

As a bonus, we can add the component of displaying a different message if the user has already guessed that letter.

Things to keep in mind:

Here is one sample solution:

The only thing I would change here is on line 9, change lstGuessed to a set(), so that on line 12, the in check will be very fast.

As always, play on!

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