"bibi midi" <bibsmen...@gmail.com> wrote in
Although i have read up quite a lot about local and global scope in
functions i still 'suffer' understanding it, ... I tried
removing it but i get error variable undeclared or something. It is in
the
function choose_Cave.
We need to see the exact error text, the whole error.
Python error messages are very informative and usually
tell you exactly what is wrong and where (once you get used to them).
I know that variables inside a function are local in scope and is gone
after
the lifetime of the function, i mean after that function is called. That
is
why there is the return statement. What i understand you can access
whatever
that function did through the return statement.
Specifically you can access the values that the return exposes,
you cannot access anything else from the function body.
I tried assigning the function to a variable outside the function
definition
but still it doesnt work. Something like:
x = choose_Cave()
checkCave(x)
That should work
So what happened? How did the program run and what error did you get?
location = '/home/bboymen/pyscripts/invent-with-Python/intro.txt'
file = open(location)
intro = file.read()
file.close()
def choose_Cave():
global choose
choose = raw_input('choose a cave! (1 or 2): ')
while choose != '1' and choose != '2': #(a)
print('enter 1 or 2 only.')
choose = raw_input('try again: ')
return choose
You can lose the global line at the top, you are no longer
modifying the global value you are returning the local one.
def checkCave(chosenCave):
print('you approach the cave...')
time.sleep(2)
print('it is dark and spooky...')
time.sleep(2)
print('a large dragon jumps over you! he open his jaws and....')
time.sleep(2)
friendlyCave = random.randint(1, 2)
if chosenCave == str(friendlyCave):
print('gives you his treasure!')
else:
print('gobbles you down in one bite!')
print(intro)
choose_Cave()
you are not assigning the return to a value
choose=choose_Cave()
checkCave(choose)
while True:
ask = raw_input('play again? (y/[N])')
reply = ['y', 'ye', 'yea', 'yeah', 'yep', 'yes']
if ask.lower() in reply:
print "\n", intro
choose_Cave()
checkCave(choose)
else:
break
You could tidy that up by moving the first lines inside the loop:
while True:
print "\n", intro
choose = choose_Cave()
checkCave(choose)
ask = raw_input('play again? (y/[N])')
reply = ['y', 'ye', 'yea', 'yeah', 'yep', 'yes']
if ask.lower() not in reply:
break
HTH,
Alan G.
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
