Hi John, there is a nice short article by E. W. Dijkstra about why it makes sense to start numbering at zero (and exclude the upper given bound) while slicing a list. Might give a bit of additional understanding.
http://www.cs.utexas.edu/users/EWD/ewd08xx/EWD831.PDF - paul http://www.cs.utexas.edu/users/EWD/ewd08xx/EWD831.PDF Am 17.12.2016 um 20:10 schrieb John: > Hi, > > I am new to Python, and I believe it's an easy question. I know R and > Matlab. > > ************ >>>> x=[1,2,3,4,5,6,7] >>>> x[0] > 1 >>>> x[1:5] > [2, 3, 4, 5] > ************* > > My question is: what does x[1:5] mean? By Python's convention, the first > element of a list is indexed as "0". Doesn't x[1:5] mean a sub-list of x, > indexed 1,2,3,4,5? If I am right, it should print [2,3,4,5,6]. Why does it > print only [2,3,4,5]? > > Thanks!! > > John -- https://mail.python.org/mailman/listinfo/python-list
