[Tutor] About using list in a function

Laura Creighton lac at openend.se
Wed Aug 19 20:16:23 CEST 2015

In a message of Wed, 19 Aug 2015 18:25:56 +0100, Alan Gauld writes:
>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.)

I got scrambled, same as you.


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