[Tutor] About using list in a function

Alan Gauld alan.gauld at btinternet.com
Wed Aug 19 19:25:56 CEST 2015

On 19/08/15 17:09, Michelle Meiduo Wu wrote:
> Hi there,
> I'm trying to use List in a function. But it doesn't work. Here are sample code not work: ---------------------------------------def getResult():    ls = []    ls= ls.append(100)    ls= ls.append(200)      return ls
> reList = []reList = getResult()lsLength = len(reList)print '\n The length of the list is:' + str(lsLength)-----------------------------------------I ran the above code, there is an error message: AttributeError: 'NoneType' object has no attribute 'append'
> But the code below not using list in a function works.----------------------------------------------### This works:ls = []ls.append(100)ls.append(200)lsLength = len(ls)print '\n list length is: ' + str(lsLength)----------------------------------------------------- Do you know  the reason?
> Thank you,Michelle

As you can (hopefully!) see above, this message is completely scrambled.
Normally that means HTML. But the headers suggest it is plain text.
Also, I see that Steve replied with a correctly formatted inclusion.

Did anyone else get the scrambled version?
And does anyone have any clues why I did?

(Using Thunderbird v31.8 and normally not having major issues.)

Alan G
Author of the Learn to Program web site
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