Usage

• 1. Creation

  2. li = ["a", "b", "mpilgrim", "z", "example"]

  3. get a value: li[index] get the value at index,

     1. if index>=0, index is counted from left to right. and the index of leftest element is 0, the rightest's is z-1. z is the size of the list

     2. if index<0, index is counted from right to left, and the value of rightest element is -1, the leftest's is z.

     3. ex: the value of li[0]=li[-4]="a",li[4]=li-1|="example";

  4. get sub list: slice a list.

Reference: http://www.diveintopython.net/native_data_types/lists.html