List can contain n
number of items. The items in list are separated by comma
>> a = [1,2,3]
To access an element in the list use the index. The index starts from 0
>> a[0]
>> 1
Lists can be nested.
>> nested_list = [ [1,2,3], ['a','b','c'] ]
>> nested_list[0]
>> [1,2,3]
>> nested_list[1][0]
>> 'a'