simple_list = [1,2,3,4]
# append an element
simple_list.append(5) # now simple_list is [1,2,3,4,5]
# append all the elements of another list (NO NESTING)
second_list = [6,7,8]
simple_list.extend(second_list) # now simple_list is [1,2,3,4,5,6,7,8]
# replace an element by simply giving the index and the new element
simple_list[0] = 100 # now simple_list is [100,2,3,4,5,6,7,8]
#!/usr/bin/python
list = ['physics', 'chemistry', 1997, 2000];
print "Value available at index 2 : "
print list[2]
list[2] = 2001;
print "New value available at index 2 : "
print list[2]