#lists

x=[1,2,3,4]
#y=x
##x and y are now both refering to the same list
#y[2]=4
##x will now print [1,2,4]
#
#names= ['john', 'jack', 'mary']
##to capitalize names
#[x.capitalize() for x in names]
#
#range(10)
##make another list that returns the squares of the numbers
#[n*n for n in range(10)]