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 http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
