Brian Blazer wrote:
> I promise that this is not homework. I am trying to self teach here
> and have run into an interesting problem. I have created a method
> that asks for a class name and then is supposed to add it to classes
> []. Here is a snippet:
>
> def getCurrentClasses():
> classes = []
> print 'Please enter the class name. When finished enter D.'
> while (c != "D"):
> c = raw_input("Enter class name")
> if (c != "D"):
> classes.append(c)
>
> I have been running this in the interactive interpreter and if I
> print the list I get the string "Enter class name" as the first entry
> in the list and what was supposed to be the first entry as the second
> element like this:
>
> Enter class name: cs1
> ['Enter class name: cs1']
>
> I guess that I assumed that c would be equal to the value entered by
> the user not the prompt string. It actually looks like it is taking
> the whole thing as one string. But then if I enter more classes I
> get this:
>
> Enter class name: cs2
> ['Enter class name: cs1', 'cs2']
>
> So with the second and successive inputs, it appends the entered string.
>
> Hopefully someone could enlighten me as to what is going on and maybe
> offer a suggestion to help me figure this one out.
>
> Thank you for your time,
>
> Brian
> [EMAIL PROTECTED]
your code gives me:
UnboundLocalError: local variable 'c' referenced before assignment
Is this the exact code you ran?
This should work:
def getCurrentClasses():
classes = []
print 'Please enter the class name. When finished enter D.'
c = None
while (c != "D"):
c = raw_input("Enter class name")
if (c != "D"):
classes.append(c)
print classes
but you are checking the same condition twice: c!= 'D', which is
unnecessary.Try:
def getCurrentClasses2():
classes = []
print 'Please enter the class name. When finished enter D.'
while True:
c = raw_input("Enter class name: ")
if (c != "D"):
classes.append(c)
else:
break
print classes
getCurrentClasses2()
Gerard
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