Stephen Mik wrote:
> Stephen Mik-novice programmer-getting desperate
Don't despair just yet! As a programmer you will be constantly producing and
fixing errors. That is business as usual.
What will change is that you will produce trickier bugs as your knowledge
level increases...
> Dear Sir(s):
> I am new to Python programming,and I have a "Guess My Number" program
> which partially works. The main while control works,the guessing of an
> integer between 1 and 60 seems to give the "too high" or "too low" elif
> branches effectively. However,when the correct number is guessed the
> "elif" for the Congratulatory Message does not print out,and the number of
> attempts at guessing the mystery number does not print out. Instead, the
> program apparently goes into the main while control loop again and queries
> the User if they want to run the program again. I have attached a sample
> Python Shell run;along with code fragments of the relevant areas.
> Anybody,please help me work out this code and get "Guess My Number"
> correctly running. CONCERNED,Stephen W. Mik
Look at that loop once more:
> while(smv_guessNumber!=smv_pickNumber):
> if (smv_guessNumber > smv_pickNumber):
> print("Guess of mystery number Too high,enter a lesser number: \n")
> smv_attemptCounter+=1
> elif (smv_guessNumber < smv_pickNumber):
> print("Guess of mystery number Too Low.Enter a greater number \n")
> smv_attemptCounter+=1
> elif (smv_guessNumber == smv_pickNumber):
> #Print Congratulatory Message,the mystery number,the number of
attempts
> print("Congratulations! You have guessed the mystery number")
[...]
> smv_guessNumber=int(input("Take a new guess!"))
Here's a simplified version:
while x != y:
if ...
elif ...
elif x == y:
print("congratulations")
x = int(input())
Can you see now why the print statement cannot be reached?
If x == y were true x != y would be false, and the loop would already have
been terminated.
The easiest fix is to move the congratulations out of the loop:
while x != y:
if x > y: ...
elif x < y: ... # see note 1
x = int(input())
print("congratulations") # at this point you can be sure that
# x == y. Otherwise the loop would still
# be running.
Note 1: you do not actually need the test here as you know that
x != y and (not x > y)
so that there's no other option than x < y.
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