[Tutor] list method help

[Alan Gauld]

> list = ["1", "test", "1.5"]
> for x in list:
>     print list.pop(x)
> 
> I get the following error:
> 
> print list.pop(x)
> TypeError: an integer is required
> 
> Does this mean i can't use a for loop to pop things from a list? 

No it means pop takes an optional *index* as an argument.

> list = ["1", "test", "1.5"]
> for x in list:
>     print list.pop(0)
> 
> which worked but returned the following:
> 
> 1
> test
> 
> Why did it not return the last value in the list?

Because you provided an index of 0 which is the beginning.
Try

 list = ["1", "test", "1.5"]
 for x in list:
     print list.pop()

Or maybe more usefully:

for x in range(len(list)):
    print list.pop()

BTW list is a bad name for a variable since it masks the 
builtin list() function.

HTH,

Alan G
Author of the learn to program web tutor
http://www.freenetpages.co.uk/hp/alan.gauld