On 15/06/18 14:57, kenneth yashim wrote: > please im new to python or any other programming language. please i want to > understand how slicing works > > [start,stop,step] > >>>> 'abc'[0:3] > 'abc' > >>>> 'abc'[0:-1] > 'ab' > > why does 'abc'[2:1] or 'abc'[2:1] print ' ' instead of 'c'???
Because stop is lower than start and the step is implicitly +1, so the slice doesn't include anything. 'abc'[2:] will yield 'c' because it implicitly specifies stop as the end of the string. 'abc'[2:1:-1] will also yield 'c' because the -1 step value reverses the direction. HTH -- 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
