Page 47 - Programming the Raspberry Pi Getting Started with Python

it is a new variable local to the function. The stub then reduces the lives remaining by 1 and returns
False to indicate that the user has not won yet. Eventually, we will put in checks to see if the player
has guessed all the letters or the whole word.
Open the file 4_5_hangman_play.py and run it. You will get a result similar to this:

What happened here is that we have whizzed through all 14 guesses very quickly, and Python has
told us what the word was and that we have lost.

All we need to do to complete the program is to replace the stub functions with real functions,
starting with get_guess, shown here:

The first thing get_guess does is to tell the player the current state of their efforts at guessing
(something like “c--c--n”) using the function print_word. This is going to be another stub function
for now. The player is then told how many lives they have left. Note that because we want to append a
number (lives_remaining) after the string Lives Remaining:, the number variable must be
converted into a string using the built-in str function.
The built-in function input prints the message in its parameter as a prompt and then returns
anything that the user types. Note that in Python 2, the input function was called raw_input.
Therefore, if you decide to use Python 2, change this function to raw_input.
Finally, the get_guess function returns whatever the user has typed.
The stub function print_word just reminds us that we have something else to write later:

Open the file 4_6_hangman_get_guess.py and run it. You will get a result similar to this:

Enter guesses until all your lives are gone to verify that you get the “losing” message.
Next, we can create the proper version of print_word. This function needs to display something

like “c--c--n,” so it needs to know which letters the player has guessed and which they haven’t. To
do this, it uses a new global variable (this time a string) that contains all the guessed letters. Every
time a letter is guessed, it gets added to this string:

Here is the function itself: